Opentelemetry 1.4.0 W3C Trace Context上下文传播实现方法咨询

适配后的注入代码 #

from opentelemetry.trace.propagation.tracecontext import TraceContextTextMapPropagator
from opentelemetry.propagators.textmap import DictSetter

prop = TraceContextTextMapPropagator()
carrier = {}
# 1.x版本调整了inject参数顺序，set_in_carrier替换为setter参数，context默认取当前上下文可省略
prop.inject(
    carrier=carrier,
    setter=DictSetter()
)

适配后的提取代码 #

from opentelemetry.trace.propagation.tracecontext import TraceContextTextMapPropagator
from opentelemetry.propagators.textmap import DictGetter

prop = TraceContextTextMapPropagator()
# 1.x版本调整了extract参数顺序，carrier放在首位，getter作为可选参数传入
context = prop.extract(
    carrier=request.headers,
    getter=DictGetter()
)

核心改动说明 #

• inject方法删除了set_in_carrier参数，替换为setter参数，针对字典类型的载体直接传入DictSetter实例即可
• extract方法参数顺序调整，原首参数getter调整为可选的第三参数，DictGetter类并未移除，仍在opentelemetry.propagators.textmap模块下
• 两个方法的context参数默认会自动获取当前上下文，无需显式传入get_current()

内容的提问来源于stack exchange，提问作者hashguard