feat:support baggage close.

polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/pojo/TraceAttributes.java

@@ -21,32 +21,41 @@
 
 public class TraceAttributes {
 
-	/**
-	 * The location to put attributes
-	 */
-	public enum AttributeLocation {
-		SPAN,
-		BAGGAGE
-	}
+    /**
+     * The location to put attributes
+     */
+    public enum AttributeLocation {
+        SPAN,
+        BAGGAGE
+    }
 
-	private Map<String, String> attributes;
+    private Map<String, String> attributes;
 
+    private AttributeLocation attributeLocation;
 
-	private AttributeLocation attributeLocation;
+    private Object otScope;
 
-	public Map<String, String> getAttributes() {
-		return attributes;
-	}
+    public Map<String, String> getAttributes() {
+        return attributes;
+    }
 
-	public void setAttributes(Map<String, String> attributes) {
-		this.attributes = attributes;
-	}
+    public void setAttributes(Map<String, String> attributes) {
+        this.attributes = attributes;
+    }
 
-	public AttributeLocation getAttributeLocation() {
-		return attributeLocation;
-	}
+    public AttributeLocation getAttributeLocation() {
+        return attributeLocation;
+    }
 
-	public void setAttributeLocation(AttributeLocation attributeLocation) {
-		this.attributeLocation = attributeLocation;
-	}
+    public void setAttributeLocation(AttributeLocation attributeLocation) {
+        this.attributeLocation = attributeLocation;
+    }
+
+    public Object getOtScope() {
+        return otScope;
+    }
+
+    public void setOtScope(Object otScope) {
+        this.otScope = otScope;
+    }
 }

polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/flow/DefaultAssemblyFlow.java

@@ -191,18 +191,19 @@ public void updateTraceAttributes(TraceAttributes traceAttributes) {
             return;
         }
         TraceReporter traceReporter = extensions.getTraceReporter();
-        if (null == traceReporter) {
+        if (null == traceReporter || !traceReporter.isEnabled()) {
             return;
         }
         switch (traceAttributes.getAttributeLocation()) {
-        case SPAN:
-            traceReporter.setSpanAttributes(traceAttributes.getAttributes());
-            break;
-        case BAGGAGE:
-            traceReporter.setBaggageAttributes(traceAttributes.getAttributes());
-            break;
-        default:
-            break;
+            case SPAN:
+                traceReporter.setSpanAttributes(traceAttributes.getAttributes());
+                break;
+            case BAGGAGE:
+                Object otScope = traceReporter.setBaggageAttributes(traceAttributes.getAttributes());
+                traceAttributes.setOtScope(otScope);
+                break;
+            default:
+                break;
         }
     }
 

polaris-common/polaris-model/src/main/java/com/tencent/polaris/api/utils/ClassUtils.java

@@ -0,0 +1,49 @@
+/*
+ * Tencent is pleased to support the open source community by making Polaris available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.polaris.api.utils;
+
+import com.tencent.polaris.logging.LoggerFactory;
+import org.slf4j.Logger;
+
+/**
+ * Utils for class.
+ *
+ * @author Haotian Zhang
+ */
+public class ClassUtils {
+
+    private static final Logger LOG = LoggerFactory.getLogger(RuleUtils.class);
+
+    /**
+     * Check if class is present.
+     *
+     * @param className class name
+     * @return true if present, false otherwise
+     */
+    public static boolean isClassPresent(String className) {
+        try {
+            Class.forName(className);
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        } catch (Throwable throwable) {
+            LOG.warn("Failed to check class present", throwable);
+            return false;
+        }
+    }
+}

polaris-common/polaris-model/src/main/java/com/tencent/polaris/api/utils/StringUtils.java

@@ -21,6 +21,8 @@
 
 public class StringUtils {
 
+    public static final String EMPTY = "";
+
     private static final String[] EMPTY_STRING_ARRAY = new String[0];
 
     public static boolean isBlank(String str) {
@@ -271,7 +273,111 @@ public static String nullSafeToString(Object obj) {
             return nullSafeToString((short[]) ((short[]) obj));
         } else {
             String str = obj.toString();
-            return str != null ? str : "";
+            return str != null ? str : EMPTY;
+        }
+    }
+
+    public static String substring(String str, int start) {
+        if (str == null) {
+            return null;
+        }
+
+        // handle negatives, which means last n characters
+        if (start < 0) {
+            start = str.length() + start; // remember start is negative
+        }
+
+        if (start < 0) {
+            start = 0;
+        }
+        if (start > str.length()) {
+            return EMPTY;
+        }
+
+        return str.substring(start);
+    }
+
+    public static String substring(String str, int start, int end) {
+        if (str == null) {
+            return null;
+        }
+
+        // handle negatives
+        if (end < 0) {
+            end = str.length() + end; // remember end is negative
+        }
+        if (start < 0) {
+            start = str.length() + start; // remember start is negative
+        }
+
+        // check length next
+        if (end > str.length()) {
+            end = str.length();
+        }
+
+        // if start is greater than end, return ""
+        if (start > end) {
+            return EMPTY;
+        }
+
+        if (start < 0) {
+            start = 0;
+        }
+        if (end < 0) {
+            end = 0;
+        }
+
+        return str.substring(start, end);
+    }
+
+    public static boolean startsWith(String str, String prefix) {
+        return startsWith(str, prefix, false);
+    }
+
+    public static boolean startsWithIgnoreCase(String str, String prefix) {
+        return startsWith(str, prefix, true);
+    }
+
+    private static boolean startsWith(String str, String prefix, boolean ignoreCase) {
+        if (str == null || prefix == null) {
+            return (str == null && prefix == null);
+        }
+        if (prefix.length() > str.length()) {
+            return false;
+        }
+        return str.regionMatches(ignoreCase, 0, prefix, 0, prefix.length());
+    }
+
+    public static boolean endsWith(String str, String suffix) {
+        return endsWith(str, suffix, false);
+    }
+
+    public static boolean endsWithIgnoreCase(String str, String suffix) {
+        return endsWith(str, suffix, true);
+    }
+
+    private static boolean endsWith(String str, String suffix, boolean ignoreCase) {
+        if (str == null || suffix == null) {
+            return (str == null && suffix == null);
+        }
+        if (suffix.length() > str.length()) {
+            return false;
+        }
+        int strOffset = str.length() - suffix.length();
+        return str.regionMatches(ignoreCase, strOffset, suffix, 0, suffix.length());
+    }
+
+    public static String upperCase(String str) {
+        if (str == null) {
+            return null;
+        }
+        return str.toUpperCase();
+    }
+
+    public static String[] split(String original, String separator) {
+        if (original == null) {
+            return null;
         }
+        return original.split(separator);
     }
 }

polaris-plugins/polaris-plugin-api/src/main/java/com/tencent/polaris/api/plugin/stat/TraceReporter.java

@@ -17,10 +17,10 @@
 
 package com.tencent.polaris.api.plugin.stat;
 
-import java.util.Map;
-
 import com.tencent.polaris.api.plugin.Plugin;
 
+import java.util.Map;
+
 /**
  * 【扩展点接口】上报调用链
  *
@@ -29,15 +29,22 @@
  */
 public interface TraceReporter extends Plugin {
 
-	/**
-	 * set the attributes in trace span
-	 * @param attributes span attributes
-	 */
-	void setSpanAttributes(Map<String, String> attributes);
+    /**
+     * if the reporter is enabled
+     */
+    boolean isEnabled();
+
+    /**
+     * set the attributes in trace span
+     *
+     * @param attributes span attributes
+     */
+    void setSpanAttributes(Map<String, String> attributes);
 
-	/**
-	 * set the attributes in baggage span
-	 * @param attributes baggage attributes
-	 */
-	void setBaggageAttributes(Map<String, String> attributes);
+    /**
+     * set the attributes in baggage span
+     *
+     * @param attributes baggage attributes
+     */
+    Object setBaggageAttributes(Map<String, String> attributes);
 }

polaris-plugins/polaris-plugins-observability/trace-otel/src/main/java/com/tencent/polaris/plugins/stat/otel/OtelTraceReporter.java

@@ -26,6 +26,7 @@
 import com.tencent.polaris.api.plugin.common.PluginTypes;
 import com.tencent.polaris.api.plugin.compose.Extensions;
 import com.tencent.polaris.api.plugin.stat.TraceReporter;
+import com.tencent.polaris.api.utils.ClassUtils;
 import com.tencent.polaris.logging.LoggerFactory;
 import com.tencent.polaris.logging.PolarisLogging;
 import io.opentelemetry.api.baggage.Baggage;
@@ -35,45 +36,50 @@
 
 public class OtelTraceReporter implements TraceReporter {
 
-	private static final Logger LOGGER = LoggerFactory.getLogger(PolarisLogging.class);
+    private static final Logger LOGGER = LoggerFactory.getLogger(PolarisLogging.class);
 
-	@Override
-	public String getName() {
-		return TraceReporterConfig.DEFAULT_REPORTER_OTEL;
-	}
+    @Override
+    public String getName() {
+        return TraceReporterConfig.DEFAULT_REPORTER_OTEL;
+    }
 
-	@Override
-	public PluginType getType() {
-		return PluginTypes.TRACE_REPORTER.getBaseType();
-	}
+    @Override
+    public PluginType getType() {
+        return PluginTypes.TRACE_REPORTER.getBaseType();
+    }
 
-	@Override
-	public void init(InitContext ctx) throws PolarisException {
+    @Override
+    public void init(InitContext ctx) throws PolarisException {
 
-	}
+    }
 
-	@Override
-	public void postContextInit(Extensions ctx) throws PolarisException {
+    @Override
+    public void postContextInit(Extensions ctx) throws PolarisException {
 
-	}
+    }
 
-	@Override
-	public void destroy() {
+    @Override
+    public void destroy() {
 
-	}
+    }
 
-	@Override
-	public void setSpanAttributes(Map<String, String> attributes) {
-		LOGGER.debug("OtelTraceReporter: setSpanAttributes: {}", attributes);
-		Span span = Span.current();
-		attributes.forEach(span::setAttribute);
-	}
+    @Override
+    public boolean isEnabled() {
+        return ClassUtils.isClassPresent("io.opentelemetry.api.trace.Span");
+    }
 
-	@Override
-	public void setBaggageAttributes(Map<String, String> attributes) {
-		LOGGER.debug("OtelTraceReporter: setBaggageAttributes: {}", attributes);
-		BaggageBuilder builder = Baggage.current().toBuilder();
-		attributes.forEach(builder::put);
-		builder.build().makeCurrent();
-	}
+    @Override
+    public void setSpanAttributes(Map<String, String> attributes) {
+        LOGGER.debug("OtelTraceReporter: setSpanAttributes: {}", attributes);
+        Span span = Span.current();
+        attributes.forEach(span::setAttribute);
+    }
+
+    @Override
+    public Object setBaggageAttributes(Map<String, String> attributes) {
+        LOGGER.debug("OtelTraceReporter: setBaggageAttributes: {}", attributes);
+        BaggageBuilder builder = Baggage.current().toBuilder();
+        attributes.forEach(builder::put);
+        return builder.build().makeCurrent();
+    }
 }