延伸扩展：XX核心业务场景
路由标签打标、传播、检索
链路标签染色与传播
SW: SkyWalking的简写
- 用户请求携带HTTP头信息
X-sw8-correlation- "X-sw8-correlation: key1=value1,key2=value2,key3=value3"
- 网关侧读取解析HTTP头信息
X-sw8-correlation，然后通过SW的关联上下文传播- ContextManager.getCorrelationContext().put(key, value)
- SW插件使用
- TraceContext.putCorrelation(key, value)
- 应用使用
- ContextManager.getCorrelationContext().put(key, value)
- 上游业务应用通过SW的关联上下文传播路由标签
CorrelationContext
- 业务应用通过JVM启动参数属性 设置SW关联上下文的Span跨度标签 键的集合
java -Dskywalking.correlation.auto_tag_keys=autotag1,autotag2，进行自动打标搜索。 - 业务应用通过环境变量 设置SW关联上下文的Span跨度标签键的集合
SW_CORRELATION_AUTO_TAG_KEYS=autotag1,autotag2，进行自动打标搜索。
应用变更
- apm-gateway-trace-plugin，SW插件，
feature/guangyi/20240531_span_tag_sw8_correlation分支- 网关应用java代理
- 链路标签染色与传播
使用示例
链路标签数据检索
{"query":"query queryTraces (condition: TraceQueryCondition) {\n data: queryBasicTraces(condition: condition) {\n traces {\n key: segmentId\n endpointNames\n duration\n start\n isError\n traceIds\n }\n }}","variables":{"condition":{"queryDuration ":{"start":"2024-06-03 0624","end":"2024-06-03 0654","step":"MINUTE"},"traceState ":"ALL","queryOrder":"BY_START_TIME","paging":{"pageNum":1,"pageSize":20},"tags":{"key":"http.status_code","value":"200"},"minTraceDuration":null,"maxTraceDuration":null,"serviceId":"bGVmaXQtdXNlcnx8cHJvZA==.1","serviceInstanceId":"bGVmaXQtdXNlcnx8cHJvZA==.1_YmRiZGU2MTMyM2NmNGVmMDhmNDYyNzQxOWY1MDg1ZDNAMTkyLjE2OC4xMDcuMjA4"}}}