feat(traces): update trace support

agent-api/src/main/java/com/intergral/deep/agent/api/plugin/ITraceProvider.java

@@ -47,5 +47,7 @@ interface ISpan extends AutoCloseable {
     String traceId();
 
     String spanId();
+
+    void addAttribute(String key, String value);
   }
 }

agent/src/main/java/com/intergral/deep/agent/DeepAgent.java

@@ -62,7 +62,7 @@ public DeepAgent(final Settings settings,
     this.grpcService = new GrpcService(settings);
     this.pollService = new LongPollService(settings, this.grpcService);
     this.tracepointConfig = new TracepointConfigService(tracepointInstrumentationService);
-    final PushService pushService = new PushService(settings, grpcService);
+    final PushService pushService = new PushService(grpcService);
 
     Callback.init(settings, tracepointConfig, pushService);
   }

agent/src/main/java/com/intergral/deep/agent/push/PushService.java

@@ -17,16 +17,11 @@
 
 package com.intergral.deep.agent.push;
 
-import com.intergral.deep.agent.api.plugin.ISnapshotContext;
-import com.intergral.deep.agent.api.plugin.ISnapshotDecorator;
-import com.intergral.deep.agent.api.resource.Resource;
 import com.intergral.deep.agent.grpc.GrpcService;
-import com.intergral.deep.agent.settings.Settings;
 import com.intergral.deep.agent.types.snapshot.EventSnapshot;
 import com.intergral.deep.proto.tracepoint.v1.Snapshot;
 import com.intergral.deep.proto.tracepoint.v1.SnapshotResponse;
 import io.grpc.stub.StreamObserver;
-import java.util.Collection;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -36,42 +31,23 @@
 public class PushService {
 
   private static final Logger LOGGER = LoggerFactory.getLogger(PushService.class);
-  private final Settings settings;
   private final GrpcService grpcService;
 
 
-  public PushService(final Settings settings, final GrpcService grpcService) {
-    this.settings = settings;
+  public PushService(final GrpcService grpcService) {
     this.grpcService = grpcService;
   }
 
   /**
    * Decorate and push the provided snapshot.
    *
    * @param snapshot the snapshot to push
-   * @param context  the context of where the snapshot is collected
    */
-  public void pushSnapshot(final EventSnapshot snapshot, final ISnapshotContext context) {
-    decorate(snapshot, context);
+  public void pushSnapshot(final EventSnapshot snapshot) {
     final Snapshot grpcSnapshot = PushUtils.convertToGrpc(snapshot);
     this.grpcService.snapshotService().send(grpcSnapshot, new LoggingObserver(snapshot.getID()));
   }
 
-  private void decorate(final EventSnapshot snapshot, final ISnapshotContext context) {
-    final Collection<ISnapshotDecorator> plugins = this.settings.getPlugins(ISnapshotDecorator.class);
-    for (ISnapshotDecorator plugin : plugins) {
-      try {
-        final Resource decorate = plugin.decorate(this.settings, context);
-        if (decorate != null) {
-          snapshot.mergeAttributes(decorate);
-        }
-      } catch (Throwable t) {
-        LOGGER.error("Error processing plugin {}", plugin.getClass().getName());
-      }
-    }
-    snapshot.close();
-  }
-
   static class LoggingObserver implements StreamObserver<SnapshotResponse> {
 
     private final String id;

agent/src/main/java/com/intergral/deep/agent/settings/Settings.java

@@ -23,6 +23,7 @@
 import com.intergral.deep.agent.api.resource.Resource;
 import com.intergral.deep.agent.api.settings.ISettings;
 import com.intergral.deep.agent.api.spi.IDeepPlugin;
+import com.intergral.deep.agent.types.TracePointConfig.EStage;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -182,6 +183,8 @@ public static <T> T coerc(final String str, final Class<T> type) {
       return (T) Level.parse(str);
     } else if (type == Pattern.class) {
       return (T) Pattern.compile(str);
+    } else if (type == EStage.class) {
+      return (T) EStage.fromArg(str);
     } else if (type == URL.class) {
       try {
         return (T) new URL(str);

agent/src/main/java/com/intergral/deep/agent/tracepoint/TracepointConfigService.java

@@ -39,7 +39,7 @@ public class TracepointConfigService implements ITracepointConfig {
   private final TracepointInstrumentationService tracepointInstrumentationService;
   private String currentHash = null;
   private final Collection<TracePointConfig> customTracepoints = new ArrayList<>();
-  private Collection<TracePointConfig> installedTracepoints = new ArrayList<>();
+  protected Collection<TracePointConfig> installedTracepoints = new ArrayList<>();
   @SuppressWarnings("unused")
   private long lastUpdate;
 

agent/src/main/java/com/intergral/deep/agent/tracepoint/cf/CFFrameProcessor.java

@@ -38,8 +38,9 @@ public CFFrameProcessor(final Settings settings,
       final IEvaluator evaluator,
       final Map<String, Object> variables,
       final Collection<TracePointConfig> tracePointConfigs,
-      final long[] lineStart, final StackTraceElement[] stack) {
-    super(settings, evaluator, variables, tracePointConfigs, lineStart, stack);
+      final long[] lineStart, final StackTraceElement[] stack,
+      final String methodName) {
+    super(settings, evaluator, variables, tracePointConfigs, lineStart, stack, methodName);
   }
 
   @Override