[8.10] Add instrumentation API and native OpenTelemetry implementation (#588)

example-transports/src/main/java/co/elastic/clients/transport/netty/NettyTransportHttpClient.java

@@ -56,9 +56,9 @@
 import javax.annotation.Nullable;
 import javax.net.ssl.SSLException;
 import java.io.IOException;
-import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -231,12 +231,8 @@ private String queryString(Request request, TransportOptions options) {
                 .entrySet()
                 .stream()
                 .map(e -> {
-                    try {
-                        return URLEncoder.encode(e.getKey(), "UTF-8") + "=" +
-                            URLEncoder.encode(e.getValue(), "UTF-8");
-                    } catch(UnsupportedEncodingException ex) {
-                        throw new RuntimeException(ex);
-                    }
+                    return URLEncoder.encode(e.getKey(), StandardCharsets.UTF_8) + "=" +
+                        URLEncoder.encode(e.getValue(), StandardCharsets.UTF_8);
                 })
                 .collect(Collectors.joining("&"));
         }

java-client/build.gradle.kts

@@ -18,8 +18,8 @@
  */
 
 import com.github.jk1.license.ProjectData
-import com.github.jk1.license.render.ReportRenderer
 import com.github.jk1.license.render.LicenseDataCollector
+import com.github.jk1.license.render.ReportRenderer
 import java.io.FileWriter
 
 plugins {
@@ -53,8 +53,8 @@ tasks.getByName<ProcessResources>("processResources") {
         if (name != "apis.json") {
             // Only process main source-set resources (test files are large)
             expand(
-                "version" to version,
-                "git_revision" to (if (rootProject.extra.has("gitHashFull")) rootProject.extra["gitHashFull"] else "unknown")
+                    "version" to version,
+                    "git_revision" to (if (rootProject.extra.has("gitHashFull")) rootProject.extra["gitHashFull"] else "unknown")
             )
         }
     }
@@ -69,7 +69,7 @@ tasks.withType<Jar> {
         if (rootProject.extra.has("gitHashFull")) {
             val jar = this as Jar
             jar.manifest.attributes["X-Git-Revision"] = rootProject.extra["gitHashFull"]
-            jar.manifest.attributes["X-Git-Commit-Time"] = rootProject .extra["gitCommitTime"]
+            jar.manifest.attributes["X-Git-Commit-Time"] = rootProject.extra["gitCommitTime"]
         } else {
             throw GradleException("No git information available")
         }
@@ -154,7 +154,7 @@ publishing {
                     // are the same as the one used in the dependency section below.
                     val xPathFactory = javax.xml.xpath.XPathFactory.newInstance()
                     val depSelector = xPathFactory.newXPath()
-                        .compile("/project/dependencies/dependency[groupId/text() = 'org.elasticsearch.client']")
+                            .compile("/project/dependencies/dependency[groupId/text() = 'org.elasticsearch.client']")
                     val versionSelector = xPathFactory.newXPath().compile("version")
 
                     var foundVersion = false;
@@ -183,6 +183,7 @@ dependencies {
     // the Java API client coexists with a 7.x HLRC work fine
     val elasticsearchVersion = "7.17.7"
     val jacksonVersion = "2.13.3"
+    val openTelemetryVersion = "1.29.0"
 
     // Apache 2.0
     // https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-low.html
@@ -201,6 +202,13 @@ dependencies {
     // https://github.com/eclipse-ee4j/parsson
     api("org.eclipse.parsson:parsson:1.0.0")
 
+    // OpenTelemetry API for native instrumentation of the client.
+    // Apache 2.0
+    // https://github.com/open-telemetry/opentelemetry-java
+    implementation("io.opentelemetry", "opentelemetry-api", openTelemetryVersion)
+    // Use it once it's stable (see Instrumentation.java). Limited to tests for now.
+    testImplementation("io.opentelemetry", "opentelemetry-semconv", "$openTelemetryVersion-alpha")
+
     // EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
     // https://github.com/eclipse-ee4j/jsonb-api
     compileOnly("jakarta.json.bind", "jakarta.json.bind-api", "2.0.0")
@@ -236,6 +244,9 @@ dependencies {
     // https://www.testcontainers.org/
     testImplementation("org.testcontainers", "testcontainers", "1.17.3")
     testImplementation("org.testcontainers", "elasticsearch", "1.17.3")
+
+
+    testImplementation("io.opentelemetry", "opentelemetry-sdk", openTelemetryVersion)
 }
 
 
@@ -247,17 +258,18 @@ licenseReport {
 class SpdxReporter(val dest: File) : ReportRenderer {
     // License names to their SPDX identifier
     val spdxIds = mapOf(
-        "Apache License, Version 2.0" to "Apache-2.0",
-        "The Apache Software License, Version 2.0" to "Apache-2.0",
-        "BSD Zero Clause License" to "0BSD",
-        "Eclipse Public License 2.0" to "EPL-2.0",
-        "Eclipse Public License v. 2.0" to "EPL-2.0",
-        "Eclipse Public License - v 2.0" to "EPL-2.0",
-        "GNU General Public License, version 2 with the GNU Classpath Exception" to "GPL-2.0 WITH Classpath-exception-2.0",
-        "COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0" to "CDDL-1.0"
+            "The Apache License, Version 2.0" to "Apache-2.0",
+            "Apache License, Version 2.0" to "Apache-2.0",
+            "The Apache Software License, Version 2.0" to "Apache-2.0",
+            "BSD Zero Clause License" to "0BSD",
+            "Eclipse Public License 2.0" to "EPL-2.0",
+            "Eclipse Public License v. 2.0" to "EPL-2.0",
+            "Eclipse Public License - v 2.0" to "EPL-2.0",
+            "GNU General Public License, version 2 with the GNU Classpath Exception" to "GPL-2.0 WITH Classpath-exception-2.0",
+            "COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0" to "CDDL-1.0"
     )
 
-    private fun quote(str: String) : String {
+    private fun quote(str: String): String {
         return if (str.contains(',') || str.contains("\"")) {
             "\"" + str.replace("\"", "\"\"") + "\""
         } else {

java-client/src/main/java/co/elastic/clients/elasticsearch/async_search/AsyncSearchStatusRequest.java

@@ -36,6 +36,8 @@
 import jakarta.json.stream.JsonGenerator;
 import java.lang.String;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
 import javax.annotation.Nullable;
@@ -149,6 +151,21 @@ public AsyncSearchStatusRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _id = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _id;
+
+				if (propsSet == (_id)) {
+					params.put("id", request.id);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/async_search/DeleteAsyncSearchRequest.java

@@ -36,6 +36,8 @@
 import jakarta.json.stream.JsonGenerator;
 import java.lang.String;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
 import javax.annotation.Nullable;
@@ -150,6 +152,21 @@ public DeleteAsyncSearchRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _id = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _id;
+
+				if (propsSet == (_id)) {
+					params.put("id", request.id);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/async_search/GetAsyncSearchRequest.java

@@ -248,6 +248,21 @@ public GetAsyncSearchRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _id = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _id;
+
+				if (propsSet == (_id)) {
+					params.put("id", request.id);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				Map<String, String> params = new HashMap<>();

java-client/src/main/java/co/elastic/clients/elasticsearch/async_search/SubmitRequest.java

@@ -2436,6 +2436,24 @@ protected static void setupSubmitRequestDeserializer(ObjectDeserializer<SubmitRe
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _index = 1 << 0;
+
+				int propsSet = 0;
+
+				if (ApiTypeHelper.isDefined(request.index()))
+					propsSet |= _index;
+
+				if (propsSet == 0) {
+				}
+				if (propsSet == (_index)) {
+					params.put("index", request.index.stream().map(v -> v).collect(Collectors.joining(",")));
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				Map<String, String> params = new HashMap<>();

java-client/src/main/java/co/elastic/clients/elasticsearch/autoscaling/DeleteAutoscalingPolicyRequest.java

@@ -36,6 +36,8 @@
 import jakarta.json.stream.JsonGenerator;
 import java.lang.String;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
 import javax.annotation.Nullable;
@@ -149,6 +151,21 @@ public DeleteAutoscalingPolicyRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _name = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _name;
+
+				if (propsSet == (_name)) {
+					params.put("name", request.name);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/autoscaling/GetAutoscalingCapacityRequest.java

@@ -77,6 +77,11 @@ public GetAutoscalingCapacityRequest() {
 
 			},
 
+			// Path parameters
+			request -> {
+				return Collections.emptyMap();
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/autoscaling/GetAutoscalingPolicyRequest.java

@@ -36,6 +36,8 @@
 import jakarta.json.stream.JsonGenerator;
 import java.lang.String;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
 import javax.annotation.Nullable;
@@ -148,6 +150,21 @@ public GetAutoscalingPolicyRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _name = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _name;
+
+				if (propsSet == (_name)) {
+					params.put("name", request.name);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/autoscaling/PutAutoscalingPolicyRequest.java

@@ -39,6 +39,8 @@
 import jakarta.json.stream.JsonParser;
 import java.lang.String;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
 import javax.annotation.Nullable;
@@ -203,6 +205,21 @@ protected static JsonpDeserializer<PutAutoscalingPolicyRequest> createPutAutosca
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _name = 1 << 0;
+
+				int propsSet = 0;
+
+				propsSet |= _name;
+
+				if (propsSet == (_name)) {
+					params.put("name", request.name);
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				return Collections.emptyMap();

java-client/src/main/java/co/elastic/clients/elasticsearch/cat/AliasesRequest.java

@@ -223,6 +223,24 @@ public AliasesRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _name = 1 << 0;
+
+				int propsSet = 0;
+
+				if (ApiTypeHelper.isDefined(request.name()))
+					propsSet |= _name;
+
+				if (propsSet == 0) {
+				}
+				if (propsSet == (_name)) {
+					params.put("name", request.name.stream().map(v -> v).collect(Collectors.joining(",")));
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				Map<String, String> params = new HashMap<>();

java-client/src/main/java/co/elastic/clients/elasticsearch/cat/AllocationRequest.java

@@ -205,6 +205,24 @@ public AllocationRequest build() {
 
 			},
 
+			// Path parameters
+			request -> {
+				Map<String, String> params = new HashMap<>();
+				final int _nodeId = 1 << 0;
+
+				int propsSet = 0;
+
+				if (ApiTypeHelper.isDefined(request.nodeId()))
+					propsSet |= _nodeId;
+
+				if (propsSet == 0) {
+				}
+				if (propsSet == (_nodeId)) {
+					params.put("nodeId", request.nodeId.stream().map(v -> v).collect(Collectors.joining(",")));
+				}
+				return params;
+			},
+
 			// Request parameters
 			request -> {
 				Map<String, String> params = new HashMap<>();