Adaptation of Dependency Query Service in Server

zipkin-server/http-query-plugin/pom.xml

@@ -23,6 +23,11 @@
       <artifactId>zipkin-server-core</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>zipkin-dependency</artifactId>
+      <version>${project.version}</version>
+    </dependency>
   </dependencies>
 
 </project>

zipkin-server/http-query-plugin/src/main/java/zipkin/server/query/http/HTTPQueryConfig.java

@@ -42,6 +42,10 @@ public class HTTPQueryConfig extends ModuleConfig {
   private boolean uiEnable = true;
   private String uiBasePath = "/zipkin";
 
+  private boolean dependencyEnabled = true;
+  private double dependencyLowErrorRate = 0.5;  // 50% of calls in error turns line yellow
+  private double dependencyHighErrorRate = 0.75;// 75% of calls in error turns line red
+
   public ZipkinQueryConfig toSkyWalkingConfig() {
     final ZipkinQueryConfig result = new ZipkinQueryConfig();
     result.setLookback(lookback);
@@ -188,4 +192,28 @@ public String getAllowedOrigins() {
   public void setAllowedOrigins(String allowedOrigins) {
     this.allowedOrigins = allowedOrigins;
   }
+
+  public boolean getDependencyEnabled() {
+    return dependencyEnabled;
+  }
+
+  public void setDependencyEnabled(boolean dependencyEnabled) {
+    this.dependencyEnabled = dependencyEnabled;
+  }
+
+  public double getDependencyLowErrorRate() {
+    return dependencyLowErrorRate;
+  }
+
+  public void setDependencyLowErrorRate(double dependencyLowErrorRate) {
+    this.dependencyLowErrorRate = dependencyLowErrorRate;
+  }
+
+  public double getDependencyHighErrorRate() {
+    return dependencyHighErrorRate;
+  }
+
+  public void setDependencyHighErrorRate(double dependencyHighErrorRate) {
+    this.dependencyHighErrorRate = dependencyHighErrorRate;
+  }
 }

zipkin-server/http-query-plugin/src/main/java/zipkin/server/query/http/HTTPQueryHandler.java

@@ -14,27 +14,38 @@
 
 package zipkin.server.query.http;
 
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
 import com.linecorp.armeria.common.AggregatedHttpResponse;
 import com.linecorp.armeria.common.HttpData;
 import com.linecorp.armeria.common.HttpStatus;
 import com.linecorp.armeria.common.MediaType;
 import com.linecorp.armeria.common.ResponseHeaders;
+import com.linecorp.armeria.server.annotation.Blocking;
+import com.linecorp.armeria.server.annotation.Get;
+import com.linecorp.armeria.server.annotation.Param;
 import org.apache.skywalking.oap.query.zipkin.handler.ZipkinQueryHandler;
 import org.apache.skywalking.oap.server.core.storage.StorageModule;
 import org.apache.skywalking.oap.server.core.storage.query.IZipkinQueryDAO;
 import org.apache.skywalking.oap.server.library.module.ModuleManager;
 import org.apache.skywalking.oap.server.library.util.CollectionUtils;
 import org.apache.skywalking.oap.server.library.util.StringUtil;
+import zipkin.server.dependency.IZipkinDependencyQueryDAO;
+import zipkin.server.dependency.ZipkinDependencyModule;
+import zipkin2.DependencyLink;
 import zipkin2.Span;
+import zipkin2.codec.DependencyLinkBytesEncoder;
 import zipkin2.codec.SpanBytesEncoder;
 
 import java.io.IOException;
+import java.io.StringWriter;
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -47,12 +58,41 @@ public class HTTPQueryHandler extends ZipkinQueryHandler {
   private final ModuleManager moduleManager;
 
   private IZipkinQueryDAO zipkinQueryDAO;
+  private IZipkinDependencyQueryDAO dependencyQueryDAO;
   public HTTPQueryHandler(HTTPQueryConfig config, ModuleManager moduleManager) {
     super(config.toSkyWalkingConfig(), moduleManager);
     this.config = config;
     this.moduleManager = moduleManager;
   }
 
+  @Override
+  public AggregatedHttpResponse getUIConfig() throws IOException {
+    StringWriter writer = new StringWriter();
+    JsonGenerator generator = new JsonFactory().createGenerator(writer);
+    generator.writeStartObject();
+    generator.writeStringField("environment", config.getUiEnvironment());
+    generator.writeNumberField("queryLimit", config.getUiQueryLimit());
+    generator.writeNumberField("defaultLookback", config.getUiDefaultLookback());
+    generator.writeBooleanField("searchEnabled", config.getUiSearchEnabled());
+    generator.writeObjectFieldStart("dependency");
+    generator.writeBooleanField("enabled", config.getDependencyEnabled());
+    generator.writeNumberField("lowErrorRate", config.getDependencyLowErrorRate());
+    generator.writeNumberField("highErrorRate", config.getDependencyHighErrorRate());
+    generator.writeEndObject();
+    generator.writeEndObject();
+    generator.close();
+    return AggregatedHttpResponse.of(HttpStatus.OK, MediaType.JSON, HttpData.ofUtf8(writer.toString()));
+  }
+
+  @Get("/api/v2/dependencies")
+  @Blocking
+  public AggregatedHttpResponse getDependencies(
+      @Param("endTs") long endTs,
+      @Param("lookback") Optional<Long> lookback) throws IOException {
+    final List<DependencyLink> dependencies = getDependencyQueryDAO().getDependencies(endTs, lookback.orElse(config.getLookback()));
+    return response(DependencyLinkBytesEncoder.JSON_V1.encodeList(dependencies));
+  }
+
   @Override
   public AggregatedHttpResponse getTraceById(String traceId) throws IOException {
     if (StringUtil.isEmpty(traceId)) {
@@ -129,4 +169,11 @@ private IZipkinQueryDAO getZipkinQueryDAO() {
     }
     return zipkinQueryDAO;
   }
+
+  public IZipkinDependencyQueryDAO getDependencyQueryDAO() {
+    if (dependencyQueryDAO == null) {
+      dependencyQueryDAO = moduleManager.find(ZipkinDependencyModule.NAME).provider().getService(IZipkinDependencyQueryDAO.class);
+    }
+    return dependencyQueryDAO;
+  }
 }

zipkin-server/pom.xml

@@ -70,6 +70,8 @@
     <module>http-query-plugin</module>
     <module>health-query-plugin</module>
     <module>telemetry-zipkin</module>
+    <module>zipkin-dependency</module>
+    <module>zipkin-storage-ext</module>
   </modules>
 
   <dependencyManagement>

zipkin-server/server-starter/pom.xml

@@ -56,6 +56,23 @@
       <version>${skywalking.version}</version>
     </dependency>
 
+    <!-- storage ext -->
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>zipkin-dependency-storage-jdbc</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>zipkin-dependency-storage-elasticsearch</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>zipkin-dependency-storage-banyandb</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
     <!-- zipkin receiver -->
     <dependency>
       <groupId>io.zipkin</groupId>
@@ -112,6 +129,13 @@
       <artifactId>slf4j-api</artifactId>
       <version>${slf4j.version}</version>
     </dependency>
+
+    <!-- for mysql -->
+    <dependency>
+      <groupId>com.mysql</groupId>
+      <artifactId>mysql-connector-j</artifactId>
+      <version>8.0.33</version>
+    </dependency>
   </dependencies>
 
   <profiles>

zipkin-server/server-starter/src/main/resources/application.yml

@@ -56,7 +56,7 @@ core:
     restAcceptQueueSize: ${ZIPKIN_REST_QUEUE_SIZE:0}
     restMaxRequestHeaderSize: ${ZIPKIN_REST_MAX_REQUEST_HEADER_SIZE:8192}
 
-storage:
+storage: &storage
   selector: ${ZIPKIN_STORAGE:h2}
   elasticsearch:
     namespace: ${ZIPKIN_NAMESPACE:""}
@@ -147,6 +147,8 @@ storage:
     superDatasetSegmentIntervalDays: ${ZIPKIN_STORAGE_BANYANDB_SUPER_DATASET_SEGMENT_INTERVAL_DAYS:1} # Unit is day
     specificGroupSettings: ${ZIPKIN_STORAGE_BANYANDB_SPECIFIC_GROUP_SETTINGS:""} # For example, {"group1": {"blockIntervalHours": 4, "segmentIntervalDays": 1}}
 
+zipkin-dependency-storage-ext: *storage
+
 receiver-zipkin-http:
   selector: ${ZIPKIN_RECEIVER_ZIPKIN_HTTP:default}
   default:
@@ -232,6 +234,9 @@ query-zipkin:
     uiDefaultLookback: ${ZIPKIN_QUERY_UI_DEFAULT_LOOKBACK:900000}
     uiEnable: ${ZIPKIN_QUERY_UI_ENABLE:true}
     uiBasePath: ${ZIPKIN_QUERY_UI_BASE_PATH:/zipkin}
+    dependencyEnabled: ${ZIPKIN_QUERY_DEPENDENCY_ENABLED:true}
+    dependencyLowErrorRate: ${ZIPKIN_QUERY_DEPENDENCY_LOW_ERROR_RATE:0.5}
+    dependencyHighErrorRate: ${ZIPKIN_QUERY_DEPENDENCY_HIGH_ERROR_RATE:0.75}
 
 query-health:
   selector: ${ZIPKIN_QUERY_HEALTH:zipkin}

zipkin-server/zipkin-dependency/pom.xml

@@ -0,0 +1,23 @@
+<?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>zipkin-dependency</artifactId>
+  <name>Zipkin Dependency</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.zipkin</groupId>
+      <artifactId>zipkin-server-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+
+</project>