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Export span status to Jaeger #367

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merged 9 commits into from
Jan 29, 2020
Merged

Export span status to Jaeger #367

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b39f33b
Remove status is missing TODO
dgzlopes Jan 16, 2020
e9a480f
Export status to Jaeger
dgzlopes Jan 22, 2020
5232a8b
Merge branch 'master' into remove-status-is-missing-todo
dgzlopes Jan 22, 2020
583279c
Fix Jaeger status
dgzlopes Jan 22, 2020
1c8f198
Fixing linting error
dgzlopes Jan 22, 2020
ed8cbdc
Fix nits
dgzlopes Jan 22, 2020
0a15900
Change _extract_tags to return an empty list
dgzlopes Jan 22, 2020
30bc36a
Remove None check
dgzlopes Jan 22, 2020
ae76533
ext/jaeger: update CHANGELOG
mauriciovasquezbernal Jan 23, 2020
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30 changes: 28 additions & 2 deletions ext/opentelemetry-ext-jaeger/src/opentelemetry/ext/jaeger/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
from opentelemetry.ext.jaeger.gen.agent import Agent as agent
from opentelemetry.ext.jaeger.gen.jaeger import Collector as jaeger
from opentelemetry.sdk.trace.export import Span, SpanExporter, SpanExportResult
from opentelemetry.trace.status import StatusCanonicalCode

DEFAULT_AGENT_HOST_NAME = "localhost"
DEFAULT_AGENT_PORT = 6831
Expand Down Expand Up @@ -145,6 +146,8 @@ def _translate_to_jaeger(spans: Span):
start_time_us = _nsec_to_usec_round(span.start_time)
duration_us = _nsec_to_usec_round(span.end_time - span.start_time)

status = span.status

parent_id = 0
if isinstance(span.parent, trace_api.Span):
parent_id = span.parent.get_context().span_id
Expand All @@ -153,8 +156,19 @@ def _translate_to_jaeger(spans: Span):

tags = _extract_tags(span.attributes)

# TODO: status is missing:
# https://github.com/open-telemetry/opentelemetry-python/issues/98
if tags is None:
tags = []
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It might be easier to change _extract_tags to always return an empty list, rather than checking this here

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And in fact we probably should since the only other place where it's used also ends up doing some juggling around this:

opentelemetry-python/ext/opentelemetry-ext-jaeger/src/opentelemetry/ext/jaeger/__init__.py

Lines 239 to 243 in ed8cbdc

fields = []
if event.attributes is not None:
fields = _extract_tags(event.attributes)
fields.append(

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@dgzlopes dgzlopes Jan 22, 2020 •
edited
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Fixed! Added the check when span.status wasn't mandatory, but now it makes no sense.

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mind updating the in _extract_logs_from_span as well?

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But if we change _extract_logs_from_span to return an empty list when a span has no logs tests break because they expect logs to be None. I think that it's the same with refs.

# Example output form tests
Span([348 chars]Double=None, vBool=None, vLong=None, vBinary=None)], logs=[])
Span([348 chars]Double=None, vBool=None, vLong=None, vBinary=None)], logs=None)

Maybe I'm misunderstanding something. What do you think?

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Sorry, I meant to update the code in _extract_logs_from_span to take advantage of this new empty list from _extract_tags, lines 239 and 240 are no longer needed:

opentelemetry-python/ext/opentelemetry-ext-jaeger/src/opentelemetry/ext/jaeger/__init__.py

Lines 239 to 243 in ed8cbdc

fields = []
if event.attributes is not None:
fields = _extract_tags(event.attributes)
fields.append(

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@dgzlopes dgzlopes Jan 22, 2020 •
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Oh, okay! It should be updated now.


tags.extend(
[
_get_long_tag("status.code", status.canonical_code.value),
_get_string_tag("status.message", status.description),
]
)

# Ensure that if Status.Code is not OK, that we set the "error" tag on the Jaeger span.
if status.canonical_code is not StatusCanonicalCode.OK:
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tags.append(_get_bool_tag("error", True))

refs = _extract_refs_from_span(span)
logs = _extract_logs_from_span(span)
Expand Down Expand Up @@ -265,6 +279,18 @@ def _convert_attribute_to_tag(key, attr):
return None


def _get_long_tag(key, val):
return jaeger.Tag(key=key, vLong=val, vType=jaeger.TagType.LONG)


def _get_string_tag(key, val):
return jaeger.Tag(key=key, vStr=val, vType=jaeger.TagType.STRING)


def _get_bool_tag(key, val):
return jaeger.Tag(key=key, vBool=val, vType=jaeger.TagType.BOOL)


class AgentClientUDP:
"""Implement a UDP client to agent.

Expand Down
30 changes: 30 additions & 0 deletions ext/opentelemetry-ext-jaeger/tests/test_jaeger_exporter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
from opentelemetry import trace as trace_api
from opentelemetry.ext.jaeger.gen.jaeger import ttypes as jaeger
from opentelemetry.sdk import trace
from opentelemetry.trace.status import Status, StatusCanonicalCode


class TestJaegerSpanExporter(unittest.TestCase):
Expand Down Expand Up @@ -155,6 +156,17 @@ def test_translate_to_jaeger(self):
context=other_context, attributes=link_attributes
)

default_status_tags = [
jaeger.Tag(
key="status.code",
vType=jaeger.TagType.LONG,
vLong=StatusCanonicalCode.OK.value,
),
jaeger.Tag(
key="status.message", vType=jaeger.TagType.STRING, vStr=None,
),
]

otel_spans = [
trace.Span(
name=span_names[0],
Expand All @@ -174,6 +186,9 @@ def test_translate_to_jaeger(self):
otel_spans[0].set_attribute("key_bool", False)
otel_spans[0].set_attribute("key_string", "hello_world")
otel_spans[0].set_attribute("key_float", 111.22)
otel_spans[0].set_status(
Status(StatusCanonicalCode.UNKNOWN, "Example description")
)
otel_spans[0].end(end_time=end_times[0])

otel_spans[1].start(start_time=start_times[1])
Expand Down Expand Up @@ -209,6 +224,19 @@ def test_translate_to_jaeger(self):
vType=jaeger.TagType.DOUBLE,
vDouble=111.22,
),
jaeger.Tag(
key="status.code",
vType=jaeger.TagType.LONG,
vLong=StatusCanonicalCode.UNKNOWN.value,
),
jaeger.Tag(
key="status.message",
vType=jaeger.TagType.STRING,
vStr="Example description",
),
jaeger.Tag(
key="error", vType=jaeger.TagType.BOOL, vBool=True,
),
],
references=[
jaeger.SpanRef(
Expand Down Expand Up @@ -255,6 +283,7 @@ def test_translate_to_jaeger(self):
startTime=start_times[1] // 10 ** 3,
duration=durations[1] // 10 ** 3,
flags=0,
tags=default_status_tags,
),
jaeger.Span(
operationName=span_names[2],
Expand All @@ -265,6 +294,7 @@ def test_translate_to_jaeger(self):
startTime=start_times[2] // 10 ** 3,
duration=durations[2] // 10 ** 3,
flags=0,
tags=default_status_tags,
),
]

Expand Down