<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>RestLookupService</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">RestLookupService</h1><h2>Description: </h2><p>Use a REST service to look up values.</p><p><a href="additionalDetails.html">Additional Details...</a></p><h3>Tags: </h3><p>rest, lookup, json, xml, http</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>, and whether a property is considered "sensitive", meaning that its value will be encrypted. Before entering a value in a sensitive property, ensure that the <strong>nifi.properties</strong> file has an entry for the property <strong>nifi.sensitive.props.key</strong>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>URL</strong></td><td></td><td id="allowable-values"></td><td id="description">The URL for the REST endpoint. Expression language is evaluated against the lookup key/value pairs, not flowfile attributes.<br/><strong>Supports Expression Language: true (will be evaluated using flow file attributes and variable registry)</strong></td></tr><tr><td id="name"><strong>Record Reader</strong></td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>RecordReaderFactory<br/><strong>Implementations: </strong><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.json.JsonPathReader/index.html">JsonPathReader</a><br/><a href="../../../nifi-scripting-nar/1.18.0/org.apache.nifi.record.script.ScriptedReader/index.html">ScriptedReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.csv.CSVReader/index.html">CSVReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.avro.AvroReader/index.html">AvroReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.syslog.SyslogReader/index.html">SyslogReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.xml.XMLReader/index.html">XMLReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.cef.CEFReader/index.html">CEFReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.json.JsonTreeReader/index.html">JsonTreeReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.windowsevent.WindowsEventLogReader/index.html">WindowsEventLogReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.lookup.ReaderLookup/index.html">ReaderLookup</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.syslog.Syslog5424Reader/index.html">Syslog5424Reader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.18.0/org.apache.nifi.grok.GrokReader/index.html">GrokReader</a><br/><a href="../../../nifi-parquet-nar/1.18.0/org.apache.nifi.parquet.ParquetReader/index.html">ParquetReader</a></td><td id="description">The record reader to use for loading the payload and handling it as a record set.</td></tr><tr><td id="name">Record Path</td><td></td><td id="allowable-values"></td><td id="description">An optional record path that can be used to define where in a record to get the real data to merge into the record set to be enriched. See documentation for examples of when this might be useful.<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name">SSL Context Service</td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SSLContextService<br/><strong>Implementations: </strong><a href="../../../nifi-ssl-context-service-nar/1.18.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a><br/><a href="../../../nifi-ssl-context-service-nar/1.18.0/org.apache.nifi.ssl.StandardRestrictedSSLContextService/index.html">StandardRestrictedSSLContextService</a></td><td id="description">The SSL Context Service used to provide client certificate information for TLS/SSL connections.</td></tr><tr><td id="name">Proxy Configuration Service</td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>ProxyConfigurationService<br/><strong>Implementation: </strong><a href="../../../nifi-proxy-configuration-nar/1.18.0/org.apache.nifi.proxy.StandardProxyConfigurationService/index.html">StandardProxyConfigurationService</a></td><td id="description">Specifies the Proxy Configuration Controller Service to proxy network requests. If set, it supersedes proxy settings configured per component. Supported proxies: HTTP + AuthN, SOCKS In case of SOCKS, it is not guaranteed that the selected SOCKS Version will be used by the processor.</td></tr><tr><td id="name">Basic Authentication Username</td><td></td><td id="allowable-values"></td><td id="description">The username to be used by the client to authenticate against the Remote URL.  Cannot include control characters (0-31), ':', or DEL (127).<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name">Basic Authentication Password</td><td></td><td id="allowable-values"></td><td id="description">The password to be used by the client to authenticate against the Remote URL.<br/><strong>Sensitive Property: true</strong><br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name">Use Digest Authentication</td><td id="default-value">false</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Whether to communicate with the website using Digest Authentication. 'Basic Authentication Username' and 'Basic Authentication Password' are used for authentication.</td></tr><tr><td id="name"><strong>Connection Timeout</strong></td><td id="default-value">5 secs</td><td id="allowable-values"></td><td id="description">Max wait time for connection to remote service.</td></tr><tr><td id="name"><strong>Read Timeout</strong></td><td id="default-value">15 secs</td><td id="allowable-values"></td><td id="description">Max wait time for response from remote service.</td></tr></table><h3>Dynamic Properties: </h3><p>Supports Sensitive Dynamic Properties: <strong>No</strong></p><p>Dynamic Properties allow the user to specify both the name and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">*</td><td id="value">*</td><td>All dynamic properties are added as HTTP headers with the name as the header name and the value as the header value.<br/><strong>Supports Expression Language: true (will be evaluated using flow file attributes and variable registry)</strong></td></tr></table></p><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>System Resource Considerations:</h3>None specified.</body></html>