# opentracing-related imports
from grpc_opentracing import open_tracing_client_interceptor, ActiveSpanSource
from grpc_opentracing.grpcext import intercept_channel
from jaeger_client import Config
# dummy class to hold span data for passing into GRPC channel
class FixedActiveSpanSource(ActiveSpanSource):
def __init__(self):
self.active_span = None
def get_active_span(self):
return self.active_span
config = Config(
config={
'sampler': {
'type': 'const',
'param': 1,
},
'logging': True,
},
service_name='foo')
tracer = config.initialize_tracer()
# ...
# In the method where GRPC requests are sent
# ...
active_span_source = FixedActiveSpanSource()
tracer_interceptor = open_tracing_client_interceptor(
tracer,
log_payloads=True,
active_span_source=active_span_source)
with tracer.start_span('span-foo') as span:
print(f"Created span: trace_id:{span.trace_id:x}, span_id:{span.span_id:x}, parent_id:{span.parent_id}, flags:{span.flags:x}")
# provide the span to the GRPC interceptor here
active_span_source.active_span = span
with grpc.insecure_channel(...) as channel:
channel = intercept_channel(channel, tracer_interceptor)
我错过了一份关键的文件。为了获得跟踪ID,必须在客户端创建一个span。此范围将具有可用于检查Jaeger UI中的数据的跟踪ID。span必须通过
ActiveSpanSource
实例添加到GRPC消息中。在当然,您可以切换
with
语句的顺序,以便在GRPC通道之后创建span。那部分没什么区别。在如果我错了,请纠正我。如果您想知道如何在服务器端找到跟踪id,那么可以尝试通过get_active_span访问OpenTracing范围。我想,跟踪id应该是其中的一个标记。在
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