def setUp(self):
"""Create an OpenTelemetry tracer and a shim before every test case."""
trace.set_tracer_provider(TracerProvider())
self.shim = opentracingshim.create_tracer(trace.get_tracer_provider())
def setUp(self):
"""Create an OpenTelemetry tracer and a shim before every test case."""
self.shim = opentracingshim.create_tracer(trace.tracer_source())
import time
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.ext.opentracing_shim import create_tracer
# Tell OpenTelemetry which Tracer implementation to use.
trace.set_tracer_provider(TracerProvider())
# Create an OpenTelemetry Tracer.
otel_tracer = trace.get_tracer(__name__)
# Create an OpenTracing shim.
# shim = create_tracer(otel_tracer)
shim = create_tracer(trace.get_tracer_provider())
with shim.start_active_span("ProcessHTTPRequest"):
print("Processing HTTP request")
# Sleeping to mock real work.
time.sleep(0.1)
with shim.start_active_span("GetDataFromDB"):
print("Getting data from DB")
# Sleeping to mock real work.
time.sleep(0.2)
# Configure the tracer using the default implementation
trace.set_tracer_provider(TracerProvider())
tracer_provider = trace.get_tracer_provider()
# Configure the tracer to export traces to Jaeger
jaeger_exporter = JaegerSpanExporter(
service_name="OpenTracing Shim Example",
agent_host_name="localhost",
agent_port=6831,
)
span_processor = SimpleExportSpanProcessor(jaeger_exporter)
tracer_provider.add_span_processor(span_processor)
# Create an OpenTracing shim. This implements the OpenTracing tracer API, but
# forwards calls to the underlying OpenTelemetry tracer.
opentracing_tracer = opentracing_shim.create_tracer(tracer_provider)
# Our example caching library expects an OpenTracing-compliant tracer.
redis_cache = RedisCache(opentracing_tracer)
# Appication code uses an OpenTelemetry Tracer as usual.
tracer = trace.get_tracer(__name__)
@redis_cache
def fib(number):
"""Get the Nth Fibonacci number, cache intermediate results in Redis."""
if number < 0:
raise ValueError
if number in (0, 1):
return number
# Configure the tracer using the default implementation
trace.set_preferred_tracer_source_implementation(lambda T: TracerSource())
tracer_source = trace.tracer_source()
# Configure the tracer to export traces to Jaeger
jaeger_exporter = JaegerSpanExporter(
service_name="OpenTracing Shim Example",
agent_host_name="localhost",
agent_port=6831,
)
span_processor = SimpleExportSpanProcessor(jaeger_exporter)
tracer_source.add_span_processor(span_processor)
# Create an OpenTracing shim. This implements the OpenTracing tracer API, but
# forwards calls to the underlying OpenTelemetry tracer.
opentracing_tracer = opentracing_shim.create_tracer(tracer_source)
# Our example caching library expects an OpenTracing-compliant tracer.
redis_cache = RedisCache(opentracing_tracer)
# Appication code uses an OpenTelemetry Tracer as usual.
tracer = trace.tracer_source().get_tracer(__name__)
@redis_cache
def fib(number):
"""Get the Nth Fibonacci number, cache intermediate results in Redis."""
if number < 0:
raise ValueError
if number in (0, 1):
return number
