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Add AWS Propagator Unit Tests
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NathanielRN committed Oct 27, 2020
1 parent 6f3398a commit 5674389
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Showing 8 changed files with 232 additions and 172 deletions.
4 changes: 2 additions & 2 deletions sdk-extension/opentelemetry-sdk-extension-aws/setup.cfg
Original file line number Diff line number Diff line change
Expand Up @@ -39,11 +39,11 @@ package_dir=
=src
packages=find_namespace:
install_requires =
opentelemetry-api == 0.14.b0
opentelemetry-api == 0.15.dev0

[options.entry_points]
opentelemetry_propagator =
aws_xray = opentelemetry.sdk.extension.aws.trace.propagation.aws_xray_format:AWSXRayFormat
aws_xray = opentelemetry.sdk.extension.aws.trace.propagation.aws_xray_format:AwsXRayFormat

[options.extras_require]
test =
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@
# limitations under the License.

from opentelemetry.sdk.extension.aws.trace.aws_xray_ids_generator import (
AWSXRayIdsGenerator,
AwsXRayIdsGenerator,
)

__all__ = ["AWSXRayIdsGenerator"]
__all__ = ["AwsXRayIdsGenerator"]
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@
from opentelemetry import trace


class AWSXRayIdsGenerator(trace.IdsGenerator):
class AwsXRayIdsGenerator(trace.IdsGenerator):
"""Generates tracing IDs compatible with the AWS X-Ray tracing service. In
the X-Ray system, the first 32 bits of the `TraceId` are the Unix epoch time
in seconds. Since spans (AWS calls them segments) with an embedded timestamp
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@
_logger = logging.getLogger(__name__)


class AWSXRayFormat(TextMapPropagator):
class AwsXRayFormat(TextMapPropagator):
"""Propagator for the AWS X-Ray Trace Header propagation protocol.
See: https://docs.aws.amazon.com/xray/latest/devguide/xray-concepts.html#xray-concepts-tracingheader
Expand Down Expand Up @@ -62,13 +62,21 @@ def extract(
carrier: TextMapPropagatorT,
context: typing.Optional[Context] = None,
) -> Context:
if not carrier:
raise ValueError(("Could not extract from carrier: %s", carrier))
trace_header_list = get_from_carrier(carrier, self.TRACE_HEADER_KEY)

trace_header = get_from_carrier(carrier, self.TRACE_HEADER_KEY)
if not trace_header_list or len(trace_header_list) != 1:
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

if not trace_header or trace_header == '':
return trace.set_span_in_context(trace.INVALID_SPAN)
trace_header = trace_header_list[0]

if not trace_header:
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

trace_id = trace.INVALID_TRACE_ID
span_id = trace.INVALID_SPAN_ID
Expand All @@ -91,7 +99,10 @@ def extract(
key_and_value_delimiter_index = stripped_kv_pair.index(self.KEY_AND_VALUE_DELIMITER)
except ValueError as _:
_logger.error(("Error parsing X-Ray trace header. Invalid key value pair: %s. Returning INVALID span context.", kv_pair_subset))
return trace.set_span_in_context(trace.INVALID_SPAN)
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

value = stripped_kv_pair[key_and_value_delimiter_index + 1:]

Expand All @@ -101,17 +112,37 @@ def extract(
value[self.TRACE_ID_DELIMITER_INDEX_1] != self.TRACE_ID_DELIMITER or
value[self.TRACE_ID_DELIMITER_INDEX_2] != self.TRACE_ID_DELIMITER):
_logger.error(("Invalid TraceId in X-Ray trace header: '%s' with value '%s'. Returning INVALID span context.", self.TRACE_HEADER_KEY, trace_header))
return trace.INVALID_SPAN_CONTEXT
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

timestamp_subset = value[self.TRACE_ID_DELIMITER_INDEX_1 + 1: self.TRACE_ID_DELIMITER_INDEX_2]
unique_id_subset = value[self.TRACE_ID_DELIMITER_INDEX_2 + 1: self.TRACE_ID_LENGTH]
trace_id = int(timestamp_subset + unique_id_subset, 16)
try:
trace_id = int(timestamp_subset + unique_id_subset, 16)
except ValueError as _:
_logger.error(("Invalid TraceId in X-Ray trace header: '%s' with value '%s'. Returning INVALID span context.", self.TRACE_HEADER_KEY, trace_header))
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)
elif stripped_kv_pair.startswith(self.PARENT_ID_KEY):
if len(value) != self.PARENT_ID_LENGTH:
_logger.error(("Invalid ParentId in X-Ray trace header: '%s' with value '%s'. Returning INVALID span context.", self.TRACE_HEADER_KEY, trace_header))
return trace.INVALID_SPAN_CONTEXT

span_id = int(value, 16)
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

try:
span_id = int(value, 16)
except ValueError as _:
_logger.error(("Invalid TraceId in X-Ray trace header: '%s' with value '%s'. Returning INVALID span context.", self.TRACE_HEADER_KEY, trace_header))
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)
elif stripped_kv_pair.startswith(self.SAMPLED_FLAG_KEY):
is_sampled_flag_valid = True

Expand All @@ -129,7 +160,10 @@ def extract(

if not is_sampled_flag_valid:
_logger.error(("Invalid Sampling flag in X-Ray trace header: '%s' with value '%s'. Returning INVALID span context.", self.TRACE_HEADER_KEY, trace_header))
return trace.INVALID_SPAN_CONTEXT
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

options = 0
if sampled:
Expand All @@ -144,7 +178,11 @@ def extract(
)

if not span_context.is_valid:
return context
_logger.error("Invalid Span Extracted. Insertting INVALID span into provided context.")
return trace.set_span_in_context(
trace.INVALID_SPAN,
context=context
)

return trace.set_span_in_context(
trace.DefaultSpan(
Expand All @@ -159,12 +197,9 @@ def inject(
carrier: TextMapPropagatorT,
context: typing.Optional[Context] = None,
) -> None:
if not carrier:
raise ValueError(("Could not extract from carrier: %s", carrier))

span = trace.get_current_span(context=context)

span_context = span.get_context()
span_context = span.get_span_context()
if not span_context.is_valid:
return

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Original file line number Diff line number Diff line change
Expand Up @@ -12,4 +12,4 @@
# See the License for the specific language governing permissions and
# limitations under the License.

__version__ = "0.14.b0"
__version__ = "0.15.dev0"
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