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# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import collections
from urllib import parse as parser
from oslo_config import cfg
from oslo_serialization import jsonutils
from osprofiler import _utils as utils
from osprofiler.drivers import base
from osprofiler import exc
class OTLP(base.Driver):
def __init__(self, connection_str, project=None, service=None, host=None,
conf=cfg.CONF, **kwargs):
"""OTLP driver using OTLP exporters."""
super(OTLP, self).__init__(connection_str, project=project,
service=service, host=host,
conf=conf, **kwargs)
try:
from opentelemetry import trace as trace_api
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter # noqa
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from opentelemetry.sdk.trace import TracerProvider
self.trace_api = trace_api
except ImportError:
raise exc.CommandError(
"To use OSProfiler with OTLP exporters, "
"please install `opentelemetry-sdk` and "
"opentelemetry-exporter-otlp libraries. "
"To install with pip:\n `pip install opentelemetry-sdk "
"opentelemetry-exporter-otlp`.")
service_name = self._get_service_name(conf, project, service)
resource = Resource(attributes={
"service.name": service_name
})
parsed_url = parser.urlparse(connection_str)
# TODO("sahid"): We also want to handle https scheme?
parsed_url = parsed_url._replace(scheme="http")
self.trace_api.set_tracer_provider(
TracerProvider(resource=resource))
self.tracer = self.trace_api.get_tracer(__name__)
exporter = OTLPSpanExporter("{}/v1/traces".format(
parsed_url.geturl()))
self.trace_api.get_tracer_provider().add_span_processor(
BatchSpanProcessor(exporter))
self.spans = collections.deque()
def _get_service_name(self, conf, project, service):
prefix = conf.profiler_otlp.service_name_prefix
if prefix:
return "{}-{}-{}".format(prefix, project, service)
return "{}-{}".format(project, service)
@classmethod
def get_name(cls):
return "otlp"
def _kind(self, name):
if "wsgi" in name:
return self.trace_api.SpanKind.SERVER
elif ("db" in name or "http_client" in name or "api" in name):
return self.trace_api.SpanKind.CLIENT
return self.trace_api.SpanKind.INTERNAL
def _name(self, payload):
info = payload["info"]
if info.get("request"):
return "{}_{}".format(
info["request"]["method"], info["request"]["path"])
elif info.get("db"):
return "SQL_{}".format(
info["db"]["statement"].split(' ', 1)[0].upper())
return payload["name"].rstrip("-start")
def notify(self, payload):
if payload["name"].endswith("start"):
parent = self.trace_api.SpanContext(
trace_id=utils.uuid_to_int128(payload["base_id"]),
span_id=utils.shorten_id(payload["parent_id"]),
is_remote=False,
trace_flags=self.trace_api.TraceFlags(
self.trace_api.TraceFlags.SAMPLED))
ctx = self.trace_api.set_span_in_context(
self.trace_api.NonRecordingSpan(parent))
# OTLP Tracing span
span = self.tracer.start_span(
name=self._name(payload),
kind=self._kind(payload['name']),
attributes=self.create_span_tags(payload),
context=ctx)
span._context = self.trace_api.SpanContext(
trace_id=span.context.trace_id,
span_id=utils.shorten_id(payload["trace_id"]),
is_remote=span.context.is_remote,
trace_flags=span.context.trace_flags,
trace_state=span.context.trace_state)
self.spans.append(span)
else:
span = self.spans.pop()
# Store result of db call and function call
for call in ("db", "function"):
if payload.get("info", {}).get(call):
span.set_attribute(
"result", payload["info"][call]["result"])
# Span error tag and log
if payload["info"].get("etype"):
span.set_attribute("error", True)
span.add_event("log", {
"error.kind": payload["info"]["etype"],
"message": payload["info"]["message"]})
span.end()
def get_report(self, base_id):
return self._parse_results()
def list_traces(self, fields=None):
return []
def list_error_traces(self):
return []
def create_span_tags(self, payload):
"""Create tags an OpenTracing compatible span.
:param info: Information from OSProfiler trace.
:returns tags: A dictionary contains standard tags
from OpenTracing sematic conventions,
and some other custom tags related to http, db calls.
"""
tags = {}
info = payload["info"]
if info.get("db"):
# DB calls
tags["db.statement"] = info["db"]["statement"]
tags["db.params"] = jsonutils.dumps(info["db"]["params"])
elif info.get("request"):
# WSGI call
tags["http.path"] = info["request"]["path"]
tags["http.query"] = info["request"]["query"]
tags["http.method"] = info["request"]["method"]
tags["http.scheme"] = info["request"]["scheme"]
elif info.get("function"):
# RPC, function calls
if "args" in info["function"]:
tags["args"] = info["function"]["args"]
if "kwargs" in info["function"]:
tags["kwargs"] = info["function"]["kwargs"]
tags["name"] = info["function"]["name"]
return tags
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