Go语言Jaeger分布式追踪：链路分析实战

Go语言Jaeger分布式追踪链路分析实战1. Jaeger概述Jaeger是Uber开源的分布式追踪系统用于监控和排查微服务架构中的性能问题。2. Go客户端package jaeger import ( github.com/opentracing/opentracing-go github.com/uber/jaeger-client-go github.com/uber/jaeger-client-go/config ) type Tracer struct { tracer opentracing.Tracer closer io.Closer } func NewTracer(serviceName, agentHost string, agentPort int) (*Tracer, error) { cfg : config.Configuration{ ServiceName: serviceName, Sampler: config.SamplerConfig{ Type: jaeger.SamplerTypeConst, Param: 1, }, Reporter: config.ReporterConfig{ LogSpans: true, AgentHost: agentHost, AgentPort: agentPort, }, } tracer, closer, err : cfg.NewTracer() if err ! nil { return nil, err } opentracing.SetGlobalTracer(tracer) return Tracer{ tracer: tracer, closer: closer, }, nil } func (t *Tracer) StartSpan(name string) opentracing.Span { return t.tracer.StartSpan(name) } func (t *Tracer) Inject(span opentracing.Span, carrier interface{}) error { return t.tracer.Inject(span.Context(), opentracing.HTTPHeaders, carrier.(opentracing.TextMapWriter)) } func (t *Tracer) Extract(carrier interface{}) (opentracing.SpanContext, error) { return t.tracer.Extract(opentracing.HTTPHeaders, carrier.(opentracing.TextMapReader)) } func (t *Tracer) Close() error { return t.closer.Close() }3. 总结Jaeger提供了完整的分布式追踪能力通过可视化的界面可以方便地分析微服务调用链路和性能瓶颈。