| <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Apache Dubbo – Configuration Center</title><link>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/</link><description>Recent content in Configuration Center on Apache Dubbo</description><generator>Hugo -- gohugo.io</generator><language>en</language><atom:link href="https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/index.xml" rel="self" type="application/rss+xml"/><item><title>Docs3-V2: Introduction to Configuration Center</title><link>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/desc/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/desc/</guid><description/></item><item><title>Docs3-V2: Dubbogo 3.0 configuration center and configuration monitoring</title><link>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/config-center-dynamic/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/config-center-dynamic/</guid><description> |
| <h2 id="1-configuration-center-concept">1. Configuration center concept</h2> |
| <p>The configuration center means that in a distributed scenario, the latest framework configuration files and applications cannot be bound together. You can specify the information of the configuration center, such as the type and address of the configuration center, and pull it from the configuration center when the framework starts Start the corresponding configuration.</p> |
| <h2 id="2-configuration-of-the-configuration-center">2. Configuration of the configuration center</h2> |
| <p>Reference repository: <a href="https://github.com/apache/dubbo-go-samples/tree/master/configcenter">dubbo-go-samples/configcenter</a></p> |
| <p>dubbogo.yml</p> |
| <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-yaml" data-lang="yaml"><span style="display:flex;"><span><span style="color:#268bd2">dubbo</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">config-center</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">protocol</span>: nacos |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">address</span>: <span style="color:#2aa198">127.0.0.1</span>:<span style="color:#2aa198">8848</span> |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">data-id</span>: dubbo-go-samples-configcenter-nacos-server |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">namespace</span>: myNamespaceID <span style="color:#586e75"># optional configuration nacos namespace ID, the default is public</span> |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">group</span>: mygroup <span style="color:#586e75"># Optional configuration nacos group, default is DEFAULT_GROUP</span> |
| </span></span></code></pre></div><p>In the configuration center nacos</p> |
| <p>group defaults to <code>dubbo</code></p> |
| <p>dataID is the specified id: <code>dubbo-go-samples-configcenter-nacos-server</code></p> |
| <p>Write the framework configuration such as the following to start normally.</p> |
| <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-yaml" data-lang="yaml"><span style="display:flex;"><span><span style="color:#268bd2">dubbo</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">registries</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">demoZK</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">protocol</span>: zookeeper |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">timeout</span>: 3s |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">address</span>: <span style="color:#2aa198">127.0.0.1</span>:<span style="color:#2aa198">2181</span> |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">protocols</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">triple</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">name</span>: tri |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">port</span>: <span style="color:#2aa198">20000</span> |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">provider</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">services</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">GreeterProvider</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">interface</span>: com.apache.dubbo.sample.basic.IGreeter |
| </span></span></code></pre></div><h2 id="3-dubbogo-dynamic-configuration-api">3. Dubbogo dynamic configuration API</h2> |
| <p>Config API is the API used by dubbogo 3.0 to manipulate the configuration structure. You can use the Config API provided by the framework to initialize the configuration structure, obtain component instances and use them. An example is as follows, including initialization of dynamic configuration instance, publish configuration, read configuration, and subscribe configuration operations.</p> |
| <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-go" data-lang="go"><span style="display:flex;"><span><span style="color:#268bd2">const</span> configCenterNacosServerConfig = <span style="color:#2aa198">`# set in config center, group is &#39;dubbo&#39;, dataid is &#39;dubbo-go-samples-configcenter-nacos-server&#39;, namespace is default &#39;public&#39; |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198">dubbo: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> registries: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> demoZK: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> protocol: zookeeper |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> address: 127.0.0.1:2181 |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> protocols: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> triple: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> name: tri |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> port: 20000 |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> provider: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> services: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> GreeterProvider: |
| </span></span></span><span style="display:flex;"><span><span style="color:#2aa198"> interface: com.apache.dubbo.sample.basic.IGreeter # must be compatible with grpc or dubbo-java`</span> |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#268bd2">type</span> GreeterProvider <span style="color:#268bd2">struct</span> { |
| </span></span><span style="display:flex;"><span> api. GreeterProviderBase |
| </span></span><span style="display:flex;"><span>} |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#268bd2">func</span> (s <span style="color:#719e07">*</span>GreeterProvider) <span style="color:#268bd2">SayHello</span>(ctx context.Context, in <span style="color:#719e07">*</span>api.HelloRequest) (<span style="color:#719e07">*</span>api.User, <span style="color:#dc322f">error</span>) { |
| </span></span><span style="display:flex;"><span> logger.<span style="color:#268bd2">Infof</span>(<span style="color:#2aa198">&#34;Dubbo3 GreeterProvider get user name = %s\n&#34;</span>, in.Name) |
| </span></span><span style="display:flex;"><span> <span style="color:#719e07">return</span> <span style="color:#719e07">&amp;</span>api.User{Name: <span style="color:#2aa198">&#34;Hello &#34;</span> <span style="color:#719e07">+</span> in.Name, Id: <span style="color:#2aa198">&#34;12345&#34;</span>, Age: <span style="color:#2aa198">21</span>}, <span style="color:#cb4b16">nil</span> |
| </span></span><span style="display:flex;"><span>} |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75">// There is no need to export DUBBO_GO_CONFIG_PATH, as you are using config api to set config |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span><span style="color:#268bd2">func</span> <span style="color:#268bd2">main</span>() { |
| </span></span><span style="display:flex;"><span><span style="color:#586e75">// Get dynamic configuration instance dynamicConfig |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> dynamicConfig, err <span style="color:#719e07">:=</span> config.<span style="color:#268bd2">NewConfigCenterConfigBuilder</span>(). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">SetProtocol</span>(<span style="color:#2aa198">&#34;nacos&#34;</span>). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">SetAddress</span>(<span style="color:#2aa198">&#34;127.0.0.1:8848&#34;</span>). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">SetGroup</span>(<span style="color:#2aa198">&#34;dubbo&#34;</span>). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">Build</span>(). <span style="color:#268bd2">GetDynamicConfiguration</span>() |
| </span></span><span style="display:flex;"><span> <span style="color:#719e07">if</span> err <span style="color:#719e07">!=</span> <span style="color:#cb4b16">nil</span> { |
| </span></span><span style="display:flex;"><span> <span style="color:#b58900">panic</span>(err) |
| </span></span><span style="display:flex;"><span> } |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> <span style="color:#586e75">// Use the dynamicConfig structure to publish the configuration |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> <span style="color:#719e07">if</span> err <span style="color:#719e07">:=</span> dynamicConfig.<span style="color:#268bd2">PublishConfig</span>(<span style="color:#2aa198">&#34;dubbo-go-samples-configcenter-nacos-server&#34;</span>, <span style="color:#2aa198">&#34;dubbo&#34;</span>, configCenterNacosServerConfig); err <span style="color:#719e07">!=</span> <span style="color:#cb4b16">nil</span> { |
| </span></span><span style="display:flex;"><span> <span style="color:#b58900">panic</span>(err) |
| </span></span><span style="display:flex;"><span> } |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> <span style="color:#586e75">// use dynamicConfig structure to read configuration |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> data, err <span style="color:#719e07">:=</span> dynamicConfig.<span style="color:#268bd2">GetRule</span>(<span style="color:#2aa198">&#34;dubbo-go-samples-configcenter-nacos-server&#34;</span>, config_center.<span style="color:#268bd2">WithGroup</span>(<span style="color:#2aa198">&#34;dubbo&#34;</span>)) |
| </span></span><span style="display:flex;"><span> <span style="color:#719e07">if</span> err <span style="color:#719e07">!=</span> <span style="color:#cb4b16">nil</span>{ |
| </span></span><span style="display:flex;"><span> <span style="color:#b58900">panic</span>(err) |
| </span></span><span style="display:flex;"><span> } |
| </span></span><span style="display:flex;"><span> logger.<span style="color:#268bd2">Infof</span>(<span style="color:#2aa198">&#34;get config = %s&#34;</span>, data) |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> <span style="color:#586e75">// Use the dynamicConfig structure to subscribe to configuration update events through a custom listener |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> l <span style="color:#719e07">:=</span> <span style="color:#719e07">&amp;</span>listener{} |
| </span></span><span style="display:flex;"><span> dynamicConfig.<span style="color:#268bd2">AddListener</span>(<span style="color:#2aa198">&#34;dubbo-go-samples-configcenter-nacos-server&#34;</span>, l) |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> time. <span style="color:#268bd2">Sleep</span>(time. Second <span style="color:#719e07">*</span> <span style="color:#2aa198">10</span>) |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> config. <span style="color:#268bd2">SetProviderService</span>(<span style="color:#719e07">&amp;</span>GreeterProvider{}) |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> <span style="color:#586e75">// Start the framework in the form of API |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> rootConfig <span style="color:#719e07">:=</span> config. <span style="color:#268bd2">NewRootConfigBuilder</span>(). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">SetConfigCenter</span>(config. <span style="color:#268bd2">NewConfigCenterConfigBuilder</span>(). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">SetProtocol</span>(<span style="color:#2aa198">&#34;nacos&#34;</span>).<span style="color:#268bd2">SetAddress</span>(<span style="color:#2aa198">&#34;127.0.0.1:8848&#34;</span>). <span style="color:#586e75">// Set the configuration center according to the configuration structure |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> <span style="color:#268bd2">SetDataID</span>(<span style="color:#2aa198">&#34;dubbo-go-samples-configcenter-nacos-server&#34;</span>). <span style="color:#586e75">// Set configuration ID |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> <span style="color:#268bd2">SetGroup</span>(<span style="color:#2aa198">&#34;dubbo&#34;</span>). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">Build</span>()). |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">build</span>() |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span> <span style="color:#719e07">if</span> err <span style="color:#719e07">:=</span> rootConfig.<span style="color:#268bd2">Init</span>(); err <span style="color:#719e07">!=</span> <span style="color:#cb4b16">nil</span> { <span style="color:#586e75">// framework starts |
| </span></span></span><span style="display:flex;"><span><span style="color:#586e75"></span> <span style="color:#b58900">panic</span>(err) |
| </span></span><span style="display:flex;"><span> } |
| </span></span><span style="display:flex;"><span> <span style="color:#719e07">select</span> {} |
| </span></span><span style="display:flex;"><span>} |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#268bd2">type</span> listener <span style="color:#268bd2">struct</span> { |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span>} |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#268bd2">func</span> (l listener) <span style="color:#268bd2">Process</span>(event <span style="color:#719e07">*</span>config_center. ConfigChangeEvent) { |
| </span></span><span style="display:flex;"><span> logger.<span style="color:#268bd2">Infof</span>(<span style="color:#2aa198">&#34;listener get config = %s&#34;</span>, event.Value) |
| </span></span><span style="display:flex;"><span>} |
| </span></span></code></pre></div><p>Of course, when starting the framework in the form of API, you can start the framework directly in the form of API.</p> |
| <h2 id="4-dubbogo-configuration-hot-update">4. Dubbogo configuration hot update</h2> |
| <p>//todo</p> |
| <p>under development</p></description></item><item><title>Docs3-V2: Remote loading configuration start</title><link>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/remote_config/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/golang-sdk/tutorial/develop/config-center/remote_config/</guid><description> |
| <h1 id="remote-loading-configuration-start">Remote loading configuration start</h1> |
| <h2 id="1-preparations">1. Preparations</h2> |
| <ul> |
| <li>dubbo-go cli tools and dependent tools have been installed</li> |
| <li>Create a new demo application</li> |
| <li>Start a Nacos instance locally/remotely, and log in to the console</li> |
| </ul> |
| <h2 id="2-create-a-configuration-in-the-configuration-center">2. Create a configuration in the configuration center</h2> |
| <p>The Dubbogo service framework supports pre-putting the content of the configuration file &lsquo;dubbogo.yaml&rsquo; into the configuration center, and then configuring the address of the registration center. In the local dubbogo.yaml configuration file, you only need to write the information of the configuration center. The middleware currently supported as the configuration center are: apollo, nacos, zookeeper</p> |
| <p>You can refer to <a href="https://github.com/apache/dubbo-go-samples/tree/master/configcenter">Configuration Center samples</a>, any service that is correctly configured with config-center configuration will first load the entire configuration from the configuration center document.</p> |
| <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-yaml" data-lang="yaml"><span style="display:flex;"><span><span style="color:#268bd2">dubbo</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">config-center</span>: |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">protocol</span>: nacos |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">address</span>: <span style="color:#2aa198">127.0.0.1</span>:<span style="color:#2aa198">8848</span> |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">data-id</span>: dubbo-go-samples-configcenter-nacos-server |
| </span></span><span style="display:flex;"><span> <span style="color:#268bd2">group</span>: myGroup <span style="color:#586e75"># nacos group, default is DEFAULT_GROUP</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># namespace: 9fb00abb-278d-42fc-96bf-e0151601e4a1 # nacos namespaceID, default is public namespace</span> |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75">## set in config center, group is &#39;dubbo&#39;, dataid is &#39;dubbo-go-samples-configcenter-nacos-server&#39;, namespace is default</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75">#dubbo:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># registries:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># demoZK:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># protocol: nacos</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># timeout: 3s</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># address: 127.0.0.1:8848</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># protocols:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># triple:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># name: tri</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># port: 20000</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># provider:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># services:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># GreeterProvider:</span> |
| </span></span><span style="display:flex;"><span><span style="color:#586e75"># interface: com.apache.dubbo.sample.basic.IGreeter # must be compatible with grpc or dubbo-java</span> |
| </span></span></code></pre></div></description></item></channel></rss> |
