Support collect tracing through gRPC

.github/workflows/test-v3.yml

@@ -52,6 +52,7 @@ jobs:
           - name: receiver-zipkin-kafka
           - name: receiver-zipkin-rabbitmq
           - name: receiver-zipkin-scribe
+          - name: receiver-zipkin-grpc
           - name: storage-cassandra
     steps:
       - name: Checkout Repository

zipkin-server/pom.xml

@@ -80,6 +80,7 @@
     <module>zipkin-storage-ext</module>
     <module>receiver-zipkin-core</module>
     <module>receiver-otlp-trace</module>
+    <module>receiver-zipkin-grpc</module>
   </modules>
 
   <dependencyManagement>

zipkin-server/receiver-zipkin-grpc/pom.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>zipkin-server-parent</artifactId>
+    <groupId>io.zipkin</groupId>
+    <version>2.24.4-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>receiver-zipkin-grpc</artifactId>
+  <name>Zipkin gRPC Receiver</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>receiver-zipkin-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>${armeria.groupId}</groupId>
+      <artifactId>armeria-grpc-protocol</artifactId>
+      <version>${armeria.version}</version>
+    </dependency>
+  </dependencies>
+</project>

zipkin-server/receiver-zipkin-grpc/src/main/java/zipkin/server/receiver/zipkin/grpc/ZipkinGRPCHandler.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2015-2023 The OpenZipkin Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package zipkin.server.receiver.zipkin.grpc;
+
+import com.linecorp.armeria.common.CommonPools;
+import com.linecorp.armeria.server.ServiceRequestContext;
+import com.linecorp.armeria.server.grpc.protocol.AbstractUnsafeUnaryGrpcService;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.apache.skywalking.oap.server.library.module.ModuleManager;
+import org.apache.skywalking.oap.server.receiver.zipkin.SpanForwardService;
+import org.apache.skywalking.oap.server.telemetry.TelemetryModule;
+import org.apache.skywalking.oap.server.telemetry.api.CounterMetrics;
+import org.apache.skywalking.oap.server.telemetry.api.HistogramMetrics;
+import org.apache.skywalking.oap.server.telemetry.api.MetricsCreator;
+import org.apache.skywalking.oap.server.telemetry.api.MetricsTag;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import zipkin2.Callback;
+import zipkin2.codec.SpanBytesDecoder;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+
+public class ZipkinGRPCHandler extends AbstractUnsafeUnaryGrpcService {
+  private static final Logger log = LoggerFactory.getLogger(ZipkinGRPCHandler.class.getName());
+
+  private final SpanForwardService spanForward;
+
+  private final CounterMetrics msgDroppedIncr;
+  private final CounterMetrics errorCounter;
+  private final HistogramMetrics histogram;
+
+  public ZipkinGRPCHandler(SpanForwardService spanForward, ModuleManager moduleManager) {
+    this.spanForward = spanForward;
+
+    MetricsCreator metricsCreator = moduleManager.find(TelemetryModule.NAME)
+        .provider()
+        .getService(MetricsCreator.class);
+    histogram = metricsCreator.createHistogramMetric(
+        "trace_in_latency",
+        "The process latency of trace data",
+        new MetricsTag.Keys("protocol"),
+        new MetricsTag.Values("zipkin-kafka")
+    );
+    msgDroppedIncr = metricsCreator.createCounter(
+        "trace_dropped_count", "The dropped number of traces",
+        new MetricsTag.Keys("protocol"), new MetricsTag.Values("zipkin-grpc"));
+    errorCounter = metricsCreator.createCounter(
+        "trace_analysis_error_count", "The error number of trace analysis",
+        new MetricsTag.Keys("protocol"), new MetricsTag.Values("zipkin-grpc")
+    );
+  }
+
+  @Override
+  protected CompletionStage<ByteBuf> handleMessage(ServiceRequestContext context, ByteBuf message) {
+    if (!message.isReadable()) {
+      msgDroppedIncr.inc();
+      return CompletableFuture.completedFuture(message); // lenient on empty messages
+    }
+
+    try {
+      CompletableFutureCallback result = new CompletableFutureCallback();
+
+      // collector.accept might block so need to move off the event loop. We make sure the
+      // callback is context aware to continue the trace.
+      Executor executor = ServiceRequestContext.mapCurrent(
+          ctx -> ctx.makeContextAware(ctx.blockingTaskExecutor()),
+          CommonPools::blockingTaskExecutor);
+
+      executor.execute(() -> {
+        try (HistogramMetrics.Timer ignored = histogram.createTimer()) {
+          spanForward.send(SpanBytesDecoder.PROTO3.decodeList(message.nioBuffer()));
+          result.onSuccess(null);
+        } catch (Exception e) {
+          log.error("Failed to handle message", e);
+          errorCounter.inc();
+          result.onError(e);
+        }
+      });
+      return result;
+    } finally {
+      message.release();
+    }
+  }
+
+  static final class CompletableFutureCallback extends CompletableFuture<ByteBuf>
+      implements Callback<Void> {
+
+    @Override public void onSuccess(Void value) {
+      complete(Unpooled.EMPTY_BUFFER);
+    }
+
+    @Override public void onError(Throwable t) {
+      completeExceptionally(t);
+    }
+  }
+}

zipkin-server/receiver-zipkin-grpc/src/main/java/zipkin/server/receiver/zipkin/grpc/ZipkinGRPCModule.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2015-2023 The OpenZipkin Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package zipkin.server.receiver.zipkin.grpc;
+
+import org.apache.skywalking.oap.server.library.module.ModuleDefine;
+
+public class ZipkinGRPCModule extends ModuleDefine {
+  public static final String NAME = "receiver-zipkin-grpc";
+  public ZipkinGRPCModule() {
+    super(NAME);
+  }
+
+  @Override
+  public Class[] services() {
+    return new Class[0];
+  }
+}

zipkin-server/receiver-zipkin-grpc/src/main/java/zipkin/server/receiver/zipkin/grpc/ZipkinGRPCProvider.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2015-2023 The OpenZipkin Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package zipkin.server.receiver.zipkin.grpc;
+
+import com.linecorp.armeria.common.HttpMethod;
+import org.apache.skywalking.oap.server.core.CoreModule;
+import org.apache.skywalking.oap.server.core.server.HTTPHandlerRegister;
+import org.apache.skywalking.oap.server.library.module.ModuleConfig;
+import org.apache.skywalking.oap.server.library.module.ModuleDefine;
+import org.apache.skywalking.oap.server.library.module.ModuleProvider;
+import org.apache.skywalking.oap.server.library.module.ModuleStartException;
+import org.apache.skywalking.oap.server.library.module.ServiceNotProvidedException;
+import org.apache.skywalking.oap.server.receiver.zipkin.SpanForwardService;
+import org.apache.skywalking.oap.server.receiver.zipkin.ZipkinReceiverModule;
+import zipkin.server.core.services.HTTPConfigurableServer;
+
+import java.util.Arrays;
+
+public class ZipkinGRPCProvider extends ModuleProvider {
+  private ZipkinGRPCReceiverConfig moduleConfig;
+
+  @Override
+  public String name() {
+    return "default";
+  }
+
+  @Override
+  public Class<? extends ModuleDefine> module() {
+    return ZipkinGRPCModule.class;
+  }
+
+  @Override
+  public ConfigCreator<? extends ModuleConfig> newConfigCreator() {
+    return new ConfigCreator<ZipkinGRPCReceiverConfig>() {
+
+      @Override
+      public Class<ZipkinGRPCReceiverConfig> type() {
+        return ZipkinGRPCReceiverConfig.class;
+      }
+
+      @Override
+      public void onInitialized(ZipkinGRPCReceiverConfig initialized) {
+        moduleConfig = initialized;
+      }
+    };
+  }
+
+  @Override
+  public void prepare() throws ServiceNotProvidedException, ModuleStartException {
+  }
+
+  @Override
+  public void start() throws ServiceNotProvidedException, ModuleStartException {
+    final SpanForwardService spanForward = getManager().find(ZipkinReceiverModule.NAME).provider().getService(SpanForwardService.class);
+    final ZipkinGRPCHandler receiver = new ZipkinGRPCHandler(spanForward, getManager());
+
+    final HTTPHandlerRegister httpRegister = getManager().find(CoreModule.NAME).provider().getService(HTTPHandlerRegister.class);
+    httpRegister.addHandler(
+        (HTTPConfigurableServer.ServerConfiguration) builder -> builder.service("/zipkin.proto3.SpanService/Report", receiver),
+        Arrays.asList(HttpMethod.POST, HttpMethod.GET));
+  }
+
+  @Override
+  public void notifyAfterCompleted() throws ServiceNotProvidedException, ModuleStartException {
+
+  }
+
+  @Override
+  public String[] requiredModules() {
+    return new String[0];
+  }
+}

zipkin-server/receiver-zipkin-grpc/src/main/java/zipkin/server/receiver/zipkin/grpc/ZipkinGRPCReceiverConfig.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-2023 The OpenZipkin Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package zipkin.server.receiver.zipkin.grpc;
+
+import org.apache.skywalking.oap.server.library.module.ModuleConfig;
+
+public class ZipkinGRPCReceiverConfig extends ModuleConfig {
+}

zipkin-server/receiver-zipkin-grpc/src/main/resources/META-INF/services/org.apache.skywalking.oap.server.library.module.ModuleDefine

@@ -0,0 +1,19 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#
+
+zipkin.server.receiver.zipkin.grpc.ZipkinGRPCModule

zipkin-server/receiver-zipkin-grpc/src/main/resources/META-INF/services/org.apache.skywalking.oap.server.library.module.ModuleProvider

@@ -0,0 +1,19 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#
+
+zipkin.server.receiver.zipkin.grpc.ZipkinGRPCProvider