| import{_ as o,c as t,b as a,d as n,e,a as p,w as r,r as c,o as i}from"./app-pmkzp6TS.js";const d={};function y(B,s){const l=c("RouteLink");return i(),t("div",null,[s[4]||(s[4]=a(`<h1 id="go-native-api" tabindex="-1"><a class="header-anchor" href="#go-native-api"><span>Go Native API</span></a></h1><p>The Go Native API supports interaction with the database through both <code>Session</code> and <code>SessionPool</code> methods. Since <code>Session</code> is not thread-safe, using <code>SessionPool</code> is strongly recommended for programming. In multi-threaded concurrent scenarios, <code>SessionPool</code> can reasonably manage and allocate connection resources to enhance system performance and resource utilization efficiency.</p><p>This article focuses on the usage of <code>SessionPool</code>, covering the complete process from environment preparation and core operation steps to the full set of interfaces.</p><h2 id="_1-environment-preparation" tabindex="-1"><a class="header-anchor" href="#_1-environment-preparation"><span>1. Environment Preparation</span></a></h2><h3 id="_1-1-prerequisites" tabindex="-1"><a class="header-anchor" href="#_1-1-prerequisites"><span>1.1 Prerequisites</span></a></h3><ul><li>golang >= 1.13</li><li>make >= 3.0</li><li>curl >= 7.1.1</li><li>thrift: 0.15.0</li><li>Linux, MacOS, or other Unix-like systems</li><li>Windows + bash (Git is needed to download the IoTDB Go client; any one of WSL, cygwin, or Git Bash is acceptable)</li></ul><h3 id="_1-2-installation-methods" tabindex="-1"><a class="header-anchor" href="#_1-2-installation-methods"><span>1.2 Installation Methods</span></a></h3><ul><li><p><strong>Using go mod</strong></p><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Switch to the HOME path of GOPATH and enable the Go Modules feature</span></span> |
| <span class="line"><span style="color:#C678DD;">export</span><span style="color:#E06C75;"> GO111MODULE</span><span style="color:#56B6C2;">=</span><span style="color:#E06C75;">on</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Configure the GOPROXY environment variable</span></span> |
| <span class="line"><span style="color:#C678DD;">export</span><span style="color:#E06C75;"> GOPROXY</span><span style="color:#56B6C2;">=</span><span style="color:#E06C75;">https</span><span style="color:#ABB2BF;">://</span><span style="color:#E06C75;">goproxy</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">io</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Create a named folder or directory and switch to it</span></span> |
| <span class="line"><span style="color:#61AFEF;">mkdir</span><span style="color:#98C379;"> session_example</span><span style="color:#ABB2BF;"> && </span><span style="color:#56B6C2;">cd</span><span style="color:#98C379;"> session_example</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Save the file, which will automatically redirect to the new address</span></span> |
| <span class="line"><span style="color:#61AFEF;">curl</span><span style="color:#D19A66;"> -o</span><span style="color:#98C379;"> session_example.go</span><span style="color:#D19A66;"> -L</span><span style="color:#98C379;"> https://github.com/apache/iotdb-client-go/raw/main/example/session_example.go</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Initialize the go module environment</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> mod</span><span style="color:#98C379;"> init</span><span style="color:#98C379;"> session_example</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Download dependency packages</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> mod</span><span style="color:#98C379;"> tidy</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Compile and run the program</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> run</span><span style="color:#98C379;"> session_example.go</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></li><li><p><strong>Using GOPATH</strong></p><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Get thrift 0.13.0</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> get</span><span style="color:#98C379;"> github.com/apache/thrift@0.13.0</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Recursively create the directory</span></span> |
| <span class="line"><span style="color:#61AFEF;">mkdir</span><span style="color:#D19A66;"> -p</span><span style="color:#E06C75;"> $GOPATH</span><span style="color:#98C379;">/src/iotdb-client-go-example/session_example</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Switch to the current directory</span></span> |
| <span class="line"><span style="color:#56B6C2;">cd</span><span style="color:#E06C75;"> $GOPATH</span><span style="color:#98C379;">/src/iotdb-client-go-example/session_example</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Save the file, which will automatically redirect to the new address</span></span> |
| <span class="line"><span style="color:#61AFEF;">curl</span><span style="color:#D19A66;"> -o</span><span style="color:#98C379;"> session_example.go</span><span style="color:#D19A66;"> -L</span><span style="color:#98C379;"> https://github.com/apache/iotdb-client-go/raw/main/example/session_example.go</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Initialize the go module environment</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> mod</span><span style="color:#98C379;"> init</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Download dependency packages</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> mod</span><span style="color:#98C379;"> tidy</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Compile and run the program</span></span> |
| <span class="line"><span style="color:#61AFEF;">go</span><span style="color:#98C379;"> run</span><span style="color:#98C379;"> session_example.go</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></li></ul><ul><li>Note: Do not use a newer client to connect to an older server, as this may cause connection failures or unexpected errors.</li></ul><h2 id="_2-core-steps" tabindex="-1"><a class="header-anchor" href="#_2-core-steps"><span>2. Core Steps</span></a></h2><p>The three core steps for using the Go native interface to operate IoTDB are as follows:</p><ol><li><strong>Create a connection pool instance</strong>: Initialize a <code>SessionPool</code> object, configuring connection parameters and pool size.</li><li><strong>Execute database operations</strong>: <code>GetSession()</code> from the pool, perform operations like data writing or querying, and <strong>must</strong> <code>PutBack(session)</code> upon completion.</li><li><strong>Close connection pool resources</strong>: Call <code>sessionPool.Close()</code> at the end of the program to release all connections.</li></ol>`,12)),n("p",null,[s[1]||(s[1]=e("The following sections illustrate the core development workflow and do not demonstrate all parameters and interfaces. For the complete functionality and parameters, please refer to: ",-1)),n("strong",null,[p(l,{to:"/UserGuide/latest/API/Programming-Go-Native-API.html#_3-full-interface-list"},{default:r(()=>[...s[0]||(s[0]=[e("Full Interface Description",-1)])]),_:1})]),s[2]||(s[2]=e(" or check: ",-1)),s[3]||(s[3]=n("strong",null,[n("a",{href:"https://github.com/apache/iotdb-client-go/blob/main/example/session_pool/session_pool_example.go",target:"_blank",rel:"noopener noreferrer"},"SessionPool Example Source Code")],-1))]),s[5]||(s[5]=a(`<h3 id="_2-1-create-connection-pool-instance" tabindex="-1"><a class="header-anchor" href="#_2-1-create-connection-pool-instance"><span>2.1 Create Connection Pool Instance</span></a></h3><ul><li><p><strong>Single Instance</strong></p><div class="language-go line-numbers-mode" data-highlighter="shiki" data-ext="go" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-go"><span class="line"><span style="color:#E06C75;">config</span><span style="color:#E5C07B;"> :=</span><span style="color:#C678DD;"> &</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PoolConfig</span><span style="color:#ABB2BF;">{</span></span> |
| <span class="line"><span style="color:#E06C75;"> Host</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">host</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> Port</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">port</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> UserName</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">user</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> Password</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">password</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"><span style="color:#E06C75;">sessionPool</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">NewSessionPool</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">config</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">false</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Close</span><span style="color:#ABB2BF;">()</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></li><li><p><strong>Distributed or Active-Active</strong></p><div class="language-go line-numbers-mode" data-highlighter="shiki" data-ext="go" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-go"><span class="line"><span style="color:#E06C75;">config</span><span style="color:#E5C07B;"> :=</span><span style="color:#C678DD;"> &</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PoolConfig</span><span style="color:#ABB2BF;">{</span></span> |
| <span class="line"><span style="color:#E06C75;"> UserName</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">user</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> Password</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">password</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> NodeUrls</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">strings</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Split</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"127.0.0.1:6667,127.0.0.1:6668"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">),</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"><span style="color:#E06C75;">sessionPool</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">NewSessionPool</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">config</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">false</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Close</span><span style="color:#ABB2BF;">()</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></li></ul><h3 id="_2-2-database-operations" tabindex="-1"><a class="header-anchor" href="#_2-2-database-operations"><span>2.2 Database Operations</span></a></h3><h4 id="_2-2-1-data-insertion" tabindex="-1"><a class="header-anchor" href="#_2-2-1-data-insertion"><span>2.2.1 Data Insertion</span></a></h4><div class="language-go line-numbers-mode" data-highlighter="shiki" data-ext="go" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-go"><span class="line"><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;">defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;">status</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">InsertTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">false</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;">tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Reset</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#61AFEF;">checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">status</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="_2-2-2-data-query" tabindex="-1"><a class="header-anchor" href="#_2-2-2-data-query"><span>2.2.2 Data Query</span></a></h4><div class="language-go line-numbers-mode" data-highlighter="shiki" data-ext="go" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-go"><span class="line"><span style="color:#C678DD;">var</span><span style="color:#E06C75;"> timeout</span><span style="color:#C678DD;"> int64</span><span style="color:#E5C07B;"> =</span><span style="color:#D19A66;"> 1000</span></span> |
| <span class="line"><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;">defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Print</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> return</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"><span style="color:#E06C75;">sessionDataSet</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">ExecuteQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sql</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">timeout</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionDataSet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Close</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#61AFEF;"> printDataSet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sessionDataSet</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">} </span><span style="color:#C678DD;">else</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Println</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2-3-usage-example" tabindex="-1"><a class="header-anchor" href="#_2-3-usage-example"><span>2.3 Usage Example</span></a></h3><div class="language-go line-numbers-mode" data-highlighter="shiki" data-ext="go" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-go"><span class="line"><span style="color:#C678DD;">import</span><span style="color:#ABB2BF;"> (</span></span> |
| <span class="line"><span style="color:#98C379;"> "flag"</span></span> |
| <span class="line"><span style="color:#98C379;"> "fmt"</span></span> |
| <span class="line"><span style="color:#98C379;"> "log"</span></span> |
| <span class="line"><span style="color:#98C379;"> "math/rand"</span></span> |
| <span class="line"><span style="color:#98C379;"> "strings"</span></span> |
| <span class="line"><span style="color:#98C379;"> "time"</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#98C379;"> "github.com/apache/iotdb-client-go/v2/client"</span></span> |
| <span class="line"><span style="color:#98C379;"> "github.com/apache/iotdb-client-go/v2/common"</span></span> |
| <span class="line"><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">var</span><span style="color:#ABB2BF;"> (</span></span> |
| <span class="line"><span style="color:#E06C75;"> host</span><span style="color:#C678DD;"> string</span></span> |
| <span class="line"><span style="color:#E06C75;"> port</span><span style="color:#C678DD;"> string</span></span> |
| <span class="line"><span style="color:#E06C75;"> user</span><span style="color:#C678DD;"> string</span></span> |
| <span class="line"><span style="color:#E06C75;"> password</span><span style="color:#C678DD;"> string</span></span> |
| <span class="line"><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">var</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#E5C07B;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">SessionPool</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> main</span><span style="color:#ABB2BF;">() {</span></span> |
| <span class="line"><span style="color:#E06C75;"> flag</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">StringVar</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">host</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"host"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"127.0.0.1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"--host=192.168.1.100"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> flag</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">StringVar</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">port</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"port"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"6667"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"--port=6667"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> flag</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">StringVar</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">user</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"user"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"--user=root"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> flag</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">StringVar</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">password</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"password"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"--password=root"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> flag</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Parse</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 1. Create connection pool</span></span> |
| <span class="line"><span style="color:#E06C75;"> config</span><span style="color:#E5C07B;"> :=</span><span style="color:#C678DD;"> &</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PoolConfig</span><span style="color:#ABB2BF;">{</span></span> |
| <span class="line"><span style="color:#E06C75;"> Host</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">host</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> Port</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">port</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> UserName</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">user</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> Password</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">password</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> sessionPool</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">NewSessionPool</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">config</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">60000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">false</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Close</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 2. Create storage group</span></span> |
| <span class="line"><span style="color:#61AFEF;"> setStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"root.sg1"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 3. Create time series</span></span> |
| <span class="line"><span style="color:#61AFEF;"> createTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"root.sg1.dev1.temperature"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 4. Data insertion</span></span> |
| <span class="line"><span style="color:#61AFEF;"> insertTablet</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 5. Data query</span></span> |
| <span class="line"><span style="color:#61AFEF;"> executeQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"select temperature from root.sg1.dev1"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 6. Deletion</span></span> |
| <span class="line"><span style="color:#61AFEF;"> deleteTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"root.sg1.dev1.temperature"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#61AFEF;"> deleteStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"root.sg1"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Set storage group</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> setStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">sg</span><span style="color:#C678DD;"> string</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">SetStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sg</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Delete storage group</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> deleteStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">sg</span><span style="color:#C678DD;"> string</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#61AFEF;"> checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">DeleteStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sg</span><span style="color:#ABB2BF;">))</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Create time series</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> createTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#C678DD;"> string</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> var</span><span style="color:#ABB2BF;"> (</span></span> |
| <span class="line"><span style="color:#E06C75;"> dataType</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">FLOAT</span></span> |
| <span class="line"><span style="color:#E06C75;"> encoding</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">PLAIN</span></span> |
| <span class="line"><span style="color:#E06C75;"> compressor</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">SNAPPY</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> )</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#61AFEF;"> checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">CreateTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">path</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">dataType</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">encoding</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">compressor</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">nil</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">nil</span><span style="color:#ABB2BF;">))</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Delete time series</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> deleteTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">paths</span><span style="color:#ABB2BF;"> ...</span><span style="color:#C678DD;">string</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#61AFEF;"> checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">DeleteTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">paths</span><span style="color:#ABB2BF;">))</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Insert Tablet data</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> insertTablet</span><span style="color:#ABB2BF;">() {</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#61AFEF;"> createTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">); </span><span style="color:#E06C75;">err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> status</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">InsertTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">false</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Reset</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#61AFEF;"> checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">status</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> } </span><span style="color:#C678DD;">else</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Fatal</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Create Tablet</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> createTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">rowCount</span><span style="color:#C678DD;"> int</span><span style="color:#ABB2BF;">) (</span><span style="color:#C678DD;">*</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">Tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">error</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">NewTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"root.sg1.dev1"</span><span style="color:#ABB2BF;">, []</span><span style="color:#C678DD;">*</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">MeasurementSchema</span><span style="color:#ABB2BF;">{</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> Measurement</span><span style="color:#ABB2BF;">: </span><span style="color:#98C379;">"temperature"</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#E06C75;"> DataType</span><span style="color:#ABB2BF;">: </span><span style="color:#E06C75;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">FLOAT</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> },</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }, </span><span style="color:#E06C75;">rowCount</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> return</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> ts</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> time</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Now</span><span style="color:#ABB2BF;">().</span><span style="color:#61AFEF;">UTC</span><span style="color:#ABB2BF;">().</span><span style="color:#61AFEF;">UnixNano</span><span style="color:#ABB2BF;">() </span><span style="color:#C678DD;">/</span><span style="color:#D19A66;"> 1000000</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#E06C75;"> row</span><span style="color:#E5C07B;"> :=</span><span style="color:#D19A66;"> 0</span><span style="color:#ABB2BF;">; </span><span style="color:#E06C75;">row</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;"> int</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">rowCount</span><span style="color:#ABB2BF;">); </span><span style="color:#E06C75;">row</span><span style="color:#56B6C2;">++</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> ts</span><span style="color:#56B6C2;">++</span></span> |
| <span class="line"><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">SetTimestamp</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">ts</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">row</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">SetValueAt</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">rand</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Float32</span><span style="color:#ABB2BF;">(), </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">row</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#E06C75;">RowSize</span><span style="color:#56B6C2;">++</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#C678DD;"> return</span><span style="color:#E06C75;"> tablet</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">nil</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Execute query statement</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> executeQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">sql</span><span style="color:#C678DD;"> string</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> var</span><span style="color:#E06C75;"> timeout</span><span style="color:#C678DD;"> int64</span><span style="color:#E5C07B;"> =</span><span style="color:#D19A66;"> 1000</span></span> |
| <span class="line"><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetSession</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionPool</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">PutBack</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">session</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Print</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> return</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> sessionDataSet</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">ExecuteQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sql</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;">timeout</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> defer</span><span style="color:#E06C75;"> sessionDataSet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Close</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#61AFEF;"> printDataSet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">sessionDataSet</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> } </span><span style="color:#C678DD;">else</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Println</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Print query results</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> printDataSet</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">sds</span><span style="color:#C678DD;"> *</span><span style="color:#E5C07B;">client</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">SessionDataSet</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E06C75;"> columnNames</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sds</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetColumnNames</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#E06C75;"> _</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">value</span><span style="color:#E5C07B;"> :=</span><span style="color:#C678DD;"> range</span><span style="color:#E06C75;"> columnNames</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> fmt</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Printf</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"</span><span style="color:#D19A66;">%s</span><span style="color:#56B6C2;">\\t</span><span style="color:#98C379;">"</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">value</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> fmt</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Println</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#E06C75;"> next</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sds</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Next</span><span style="color:#ABB2BF;">(); </span><span style="color:#E06C75;">err</span><span style="color:#56B6C2;"> ==</span><span style="color:#D19A66;"> nil</span><span style="color:#56B6C2;"> &&</span><span style="color:#E06C75;"> next</span><span style="color:#ABB2BF;">; </span><span style="color:#E06C75;">next</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">err</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> sds</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Next</span><span style="color:#ABB2BF;">() {</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#E06C75;"> _</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">columnName</span><span style="color:#E5C07B;"> :=</span><span style="color:#C678DD;"> range</span><span style="color:#E06C75;"> columnNames</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> isNull</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">_</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sds</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">IsNull</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">columnName</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> isNull</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> fmt</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Printf</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"</span><span style="color:#D19A66;">%v</span><span style="color:#56B6C2;">\\t\\t</span><span style="color:#98C379;">"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"null"</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> } </span><span style="color:#C678DD;">else</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> v</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">_</span><span style="color:#E5C07B;"> :=</span><span style="color:#E06C75;"> sds</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">GetString</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">columnName</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#E06C75;"> fmt</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Printf</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"</span><span style="color:#D19A66;">%v</span><span style="color:#56B6C2;">\\t\\t</span><span style="color:#98C379;">"</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;">v</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> fmt</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Println</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// Check error</span></span> |
| <span class="line"><span style="color:#C678DD;">func</span><span style="color:#61AFEF;"> checkError</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;font-style:italic;">status</span><span style="color:#C678DD;"> *</span><span style="color:#E5C07B;">common</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">TSStatus</span><span style="color:#ABB2BF;">, </span><span style="color:#E06C75;font-style:italic;">err</span><span style="color:#C678DD;"> error</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Fatal</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> status</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#E06C75;"> err</span><span style="color:#E5C07B;"> =</span><span style="color:#E06C75;"> client</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">VerifySuccess</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">status</span><span style="color:#ABB2BF;">); </span><span style="color:#E06C75;">err</span><span style="color:#56B6C2;"> !=</span><span style="color:#D19A66;"> nil</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#E06C75;"> log</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">Println</span><span style="color:#ABB2BF;">(</span><span style="color:#E06C75;">err</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="_3-full-interface-list" tabindex="-1"><a class="header-anchor" href="#_3-full-interface-list"><span>3. Full Interface List</span></a></h2><h3 id="_3-1-sessionpool-management-interfaces" tabindex="-1"><a class="header-anchor" href="#_3-1-sessionpool-management-interfaces"><span>3.1 SessionPool Management Interfaces</span></a></h3><table><thead><tr><th style="text-align:left;">Interface Name</th><th style="text-align:left;">Function Description</th><th style="text-align:left;">Parameter Description</th></tr></thead><tbody><tr><td style="text-align:left;"><code>NewSessionPool(config *PoolConfig, maxSize, connTimeoutMs, waitTimeoutMs int, enableComp bool) SessionPool</code></td><td style="text-align:left;">Creates and returns a Session connection pool instance.</td><td style="text-align:left;"><code>config</code>: Pool configuration<br> <code>maxSize</code>: Maximum connections (≤0 uses CPU count * 5)<br><code>connTimeoutMs</code>: TCP connection timeout (ms)<br><code>waitTimeoutMs</code>: Session acquisition wait timeout (ms)<br><code>enableComp</code>: Whether to enable compression</td></tr><tr><td style="text-align:left;"><code>GetSession() (Session, error)</code></td><td style="text-align:left;">Gets an available Session from the pool. Blocks if the pool is full, returns error on timeout. Must be paired with <code>PutBack</code>.</td><td style="text-align:left;">None</td></tr><tr><td style="text-align:left;"><code>PutBack(session Session)</code></td><td style="text-align:left;">Returns a used Session back to the connection pool.</td><td style="text-align:left;"><code>session</code>: The instance obtained from <code>GetSession</code></td></tr><tr><td style="text-align:left;"><code>Close()</code></td><td style="text-align:left;">Closes the connection pool, releasing all active connections. Must be called before program exit.</td><td style="text-align:left;">None</td></tr></tbody></table><h3 id="_3-2-data-insertion-interfaces" tabindex="-1"><a class="header-anchor" href="#_3-2-data-insertion-interfaces"><span>3.2 Data Insertion Interfaces</span></a></h3><p><em>The following interfaces are called via the obtained Session.</em></p><table><thead><tr><th style="text-align:left;">Interface Name</th><th style="text-align:left;">Function Description</th><th style="text-align:left;">Parameter Description</th></tr></thead><tbody><tr><td style="text-align:left;"><code>InsertRecord(deviceId string, measurements []string, dataTypes []TSDataType, values []interface{}, timestamp int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts a single record.</td><td style="text-align:left;"><code>deviceId</code>: Device ID <br><code>measurements</code>: Measurement list<br><code>dataTypes</code>: Data type list<br><code>values</code>: Value list<br><code>timestamp</code>: Timestamp</td></tr><tr><td style="text-align:left;"><code>InsertAlignedRecord(deviceId string, measurements []string, dataTypes []TSDataType, values []interface{}, timestamp int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts a single aligned record.</td><td style="text-align:left;"><code>deviceId</code>: Device ID<br><code>measurements</code>: Measurement list<br><code>dataTypes</code>: Data type list<br><code>values</code>: Value list<br><code>timestamp</code>: Timestamp</td></tr><tr><td style="text-align:left;"><code>InsertStringRecord(deviceId string, measurements []string, values []string, timestamp int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts a single record in string format.</td><td style="text-align:left;"><code>deviceId</code>: Device ID<br><code>measurements</code>: Measurement list<br><code>values</code>: String-type value list<br><code>timestamp</code>: Timestamp</td></tr><tr><td style="text-align:left;"><code>InsertRecords(deviceIds []string, measurements [][]string, dataTypes [][]TSDataType, values [][]interface{}, timestamps []int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts multiple records for multiple devices.</td><td style="text-align:left;"><code>deviceIds</code>: Device ID list<br><code>measurements</code>: 2D measurement list<br><code>dataTypes</code>: 2D data type list<br><code>values</code>: 2D value list<br><code>timestamps</code>: Timestamp list</td></tr><tr><td style="text-align:left;"><code>InsertAlignedRecords(deviceIds []string, measurements [][]string, dataTypes [][]TSDataType, values [][]interface{}, timestamps []int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts multiple records for multiple aligned devices.</td><td style="text-align:left;"><code>deviceIds</code>: Device ID list<br><code>measurements</code>: 2D measurement list<br><code>dataTypes</code>: 2D data type list<br><code>values</code>: 2D value list<br><code>timestamps</code>: Timestamp list</td></tr><tr><td style="text-align:left;"><code>InsertTablet(tablet Tablet, sorted bool) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts multiple rows of data for a single device.</td><td style="text-align:left;"><code>tablet</code>: The Tablet data to insert<br><code>sorted</code>: Whether the data is sorted</td></tr><tr><td style="text-align:left;"><code>InsertAlignedTablet(tablet Tablet, sorted bool) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Inserts multiple rows of data for a single aligned device.</td><td style="text-align:left;"><code>tablet</code>: The Tablet data to insert<br><code>sorted</code>: Whether the data is sorted</td></tr><tr><td style="text-align:left;"><code>InsertTablets(tablets []Tablet, sorted bool) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Batch inserts multiple Tablet data.</td><td style="text-align:left;"><code>tablets</code>: Multiple Tablet data to insert<br><code>sorted</code>: Whether the data is sorted</td></tr><tr><td style="text-align:left;"><code>InsertAlignedTablets(tablets []Tablet, sorted bool) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Batch inserts multiple aligned devices' data.</td><td style="text-align:left;"><code>tablets</code>: Multiple Tablet data to insert<br><code>sorted</code>: Whether the data is sorted</td></tr></tbody></table><h3 id="_3-3-sql-and-query-interfaces" tabindex="-1"><a class="header-anchor" href="#_3-3-sql-and-query-interfaces"><span>3.3 SQL and Query Interfaces</span></a></h3><p><em>The following interfaces are called via the obtained Session.</em></p><table><thead><tr><th style="text-align:left;">Interface Name</th><th style="text-align:left;">Function Description</th><th style="text-align:left;">Parameter Description</th></tr></thead><tbody><tr><td style="text-align:left;"><code>ExecuteStatement(sql string)(SessionDataSet, error)</code></td><td style="text-align:left;">Executes SQL (primarily for queries), returns a SessionDataSet.</td><td style="text-align:left;"><code>sql</code>: The SQL query statement to execute</td></tr><tr><td style="text-align:left;"><code>ExecuteQueryStatement(sql string, timeoutMs *int64) (SessionDataSet, error)</code></td><td style="text-align:left;">Executes a query SQL with optional timeout, returns a SessionDataSet.</td><td style="text-align:left;"><code>sql</code>: The SQL query statement to execute <br> <code>timeoutMs</code>: Query timeout time (milliseconds)</td></tr><tr><td style="text-align:left;"><code>ExecuteNonQueryStatement(sql string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Executes SQL that does not return a result set (e.g., INSERT, CREATE, DELETE).</td><td style="text-align:left;"><code>sql</code>: The SQL statement to execute</td></tr><tr><td style="text-align:left;"><code>ExecuteRawDataQuery(paths []string, startTime int64, endTime int64) (*SessionDataSet, error)</code></td><td style="text-align:left;">Queries raw data for specified time series within a time range.</td><td style="text-align:left;"><code>paths</code>: Query path list <br><code>startTime</code>: Start timestamp<br><code>endTime</code>: End timestamp</td></tr><tr><td style="text-align:left;"><code>ExecuteAggregationQuery(paths []string, aggregations []common.TAggregationType, startTime, endTime, interval, timeoutMs int64) (SessionDataSet, error)</code></td><td style="text-align:left;">Executes an aggregation query (COUNT, AVG, etc.).</td><td style="text-align:left;"><code>paths</code>: Query path list<br><code>aggregations</code>: Aggregation type list<br><code>startTime, endTime, interval</code>: Start time, end time, and interval<br><code>timeoutMs</code>: Query timeout time</td></tr><tr><td style="text-align:left;"><code>ExecuteBatchStatement(sqls []string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Executes multiple SQL statements in batch.</td><td style="text-align:left;"><code>sqls</code>: The SQL statements to execute</td></tr></tbody></table><h3 id="_3-4-metadata-operation-interfaces" tabindex="-1"><a class="header-anchor" href="#_3-4-metadata-operation-interfaces"><span>3.4 Metadata Operation Interfaces</span></a></h3><p><em>The following interfaces are called via the obtained Session.</em></p><table><thead><tr><th style="text-align:left;">Interface Name</th><th style="text-align:left;">Function Description</th><th style="text-align:left;">Parameter Description</th></tr></thead><tbody><tr><td style="text-align:left;"><code>SetStorageGroup(storageGroupId string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Creates a database (storage group).</td><td style="text-align:left;"><code>storageGroupId</code>: Database (storage group) name</td></tr><tr><td style="text-align:left;"><code>DeleteStorageGroup(storageGroupId string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Deletes a database (storage group).</td><td style="text-align:left;"><code>storageGroupId</code>: The database (storage group) name to delete</td></tr><tr><td style="text-align:left;"><code>DeleteStorageGroups(storageGroupIds ...string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Deletes multiple databases (storage groups).</td><td style="text-align:left;"><code>storageGroupIds</code>: The list of database (storage group) names to delete</td></tr><tr><td style="text-align:left;"><code>CreateTimeseries(path string, dataType TSDataType, encoding TSEncoding, compressor TSCompressionType, attributes map[string]string, tags map[string]string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Creates a non-aligned time series.</td><td style="text-align:left;"><code>path</code>: Time series path<br><code>dataType</code>: Data type<br><code>encoding</code>: Encoding method<br><code>compressor</code>: Compression algorithm<br><code>attributes</code>: (Optional) Series attributes<br><code>tags</code>: (Optional) Series tags</td></tr><tr><td style="text-align:left;"><code>CreateAlignedTimeseries(prefixPath string, measurements []string, dataTypes []TSDataType, encodings []TSEncoding, compressors []TSCompressionType, measurementAlias []string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Creates a group of aligned time series.</td><td style="text-align:left;"><code>prefixPath</code>: Time series path prefix <br><code>measurements</code>: Measurement name list<br><code>dataTypes, encodings, compressors</code>: Data type, encoding, and compressor list for each measurement<br><code>measurementAlias</code>: (Optional) Alias list for each measurement</td></tr><tr><td style="text-align:left;"><code>DeleteTimeseries(paths []string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Deletes multiple time series (including their data).</td><td style="text-align:left;"><code>paths</code>: The list of time series paths to delete</td></tr><tr><td style="text-align:left;"><code>DeleteData(paths []string, startTime int64, endTime int64) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Deletes data within a time period for specified time series (metadata is preserved).</td><td style="text-align:left;"><code>paths</code>: The list of time series paths<br><code>startTime</code>: Start timestamp<br><code>endTime</code>: End timestamp</td></tr><tr><td style="text-align:left;"><code>SetTimeZone(timeZone string) (r common.TSStatus, err error)</code></td><td style="text-align:left;">Sets the time zone for the current session.</td><td style="text-align:left;"><code>timeZone</code>: Time zone string, e.g., "UTC", "Asia/Shanghai", "GMT+8"</td></tr><tr><td style="text-align:left;"><code>GetTimeZone() (string, error)</code></td><td style="text-align:left;">Gets the time zone of the current session.</td><td style="text-align:left;">None</td></tr></tbody></table><h3 id="_3-5-key-configuration-structure-poolconfig" tabindex="-1"><a class="header-anchor" href="#_3-5-key-configuration-structure-poolconfig"><span>3.5 Key Configuration Structure (PoolConfig)</span></a></h3><table><thead><tr><th style="text-align:left;">Field</th><th style="text-align:left;">Type</th><th style="text-align:left;">Required</th><th style="text-align:left;">Description</th></tr></thead><tbody><tr><td style="text-align:left;"><code>Host</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">Choose one with <code>NodeUrls</code></td><td style="text-align:left;">Single-node host address.</td></tr><tr><td style="text-align:left;"><code>Port</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">Choose one with <code>NodeUrls</code></td><td style="text-align:left;">Single-node port.</td></tr><tr><td style="text-align:left;"><code>NodeUrls</code></td><td style="text-align:left;"><code>[]string</code></td><td style="text-align:left;">Choose one with <code>Host</code>/<code>Port</code></td><td style="text-align:left;">Cluster node address list, format: <code>"host:port"</code>.</td></tr><tr><td style="text-align:left;"><code>UserName</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">Yes</td><td style="text-align:left;">Username.</td></tr><tr><td style="text-align:left;"><code>Password</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">Yes</td><td style="text-align:left;">Password.</td></tr><tr><td style="text-align:left;"><code>FetchSize</code></td><td style="text-align:left;"><code>int32</code></td><td style="text-align:left;">No</td><td style="text-align:left;">Query result set fetch size, default 1024.</td></tr><tr><td style="text-align:left;"><code>TimeZone</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">No</td><td style="text-align:left;">Session time zone, e.g., "Asia/Shanghai". Default uses server time zone.</td></tr><tr><td style="text-align:left;"><code>Database</code></td><td style="text-align:left;"><code>string</code></td><td style="text-align:left;">No</td><td style="text-align:left;">For table mode; used to set the session's default database.</td></tr></tbody></table>`,23))])}const m=o(d,[["render",y]]),v=JSON.parse('{"path":"/UserGuide/latest/API/Programming-Go-Native-API.html","title":"Go Native API","lang":"en-US","frontmatter":{"description":"Go Native API The Go Native API supports interaction with the database through both Session and SessionPool methods. Since Session is not thread-safe, using SessionPool is stron...","head":[["script",{"type":"application/ld+json"},"{\\"@context\\":\\"https://schema.org\\",\\"@type\\":\\"Article\\",\\"headline\\":\\"Go Native API\\",\\"image\\":[\\"\\"],\\"dateModified\\":\\"2026-03-25T07:01:57.000Z\\",\\"author\\":[]}"],["meta",{"property":"og:url","content":"https://iotdb.apache.org/UserGuide/latest/API/Programming-Go-Native-API.html"}],["meta",{"property":"og:site_name","content":"IoTDB Website"}],["meta",{"property":"og:title","content":"Go Native API"}],["meta",{"property":"og:description","content":"Go Native API The Go Native API supports interaction with the database through both Session and SessionPool methods. Since Session is not thread-safe, using SessionPool is stron..."}],["meta",{"property":"og:type","content":"article"}],["meta",{"property":"og:locale","content":"en-US"}],["meta",{"property":"og:locale:alternate","content":"zh-CN"}],["meta",{"property":"og:updated_time","content":"2026-03-25T07:01:57.000Z"}],["meta",{"property":"article:modified_time","content":"2026-03-25T07:01:57.000Z"}],["link",{"rel":"alternate","hreflang":"zh-cn","href":"https://iotdb.apache.org/zh/UserGuide/latest/API/Programming-Go-Native-API.html"}]]},"git":{"createdTime":1688958677000,"updatedTime":1774422117000,"contributors":[{"name":"CritasWang","username":"CritasWang","email":"critas@outlook.com","commits":3,"url":"https://github.com/CritasWang"},{"name":"LeiRui","username":"LeiRui","email":"33376433+LeiRui@users.noreply.github.com","commits":1,"url":"https://github.com/LeiRui"},{"name":"Haonan","username":"Haonan","email":"hhaonan@outlook.com","commits":1,"url":"https://github.com/Haonan"},{"name":"W1y1r","username":"W1y1r","email":"150988475+W1y1r@users.noreply.github.com","commits":2,"url":"https://github.com/W1y1r"},{"name":"Mister-Hope","username":"Mister-Hope","email":"mister-hope@outlook.com","commits":1,"url":"https://github.com/Mister-Hope"},{"name":"leto-b","username":"leto-b","email":"bingqian.bai@timecho.com","commits":4,"url":"https://github.com/leto-b"}]},"readingTime":{"minutes":6.96,"words":2088},"filePathRelative":"UserGuide/latest/API/Programming-Go-Native-API.md","autoDesc":true}');export{m as comp,v as data}; |
