text: # Copyright The OpenTelemetry Authors
  #
  # 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.
  
  """
  Installation
  ------------
  
  ::
  
      pip install opentelemetry-sdk-extension-aws
  
  AWS X-Ray IDs Generator
  -----------------------
  
  The **AWS X-Ray IDs Generator** provides a custom IDs Generator to make
  traces generated using the OpenTelemetry SDKs `TracerProvider` compatible
  with the AWS X-Ray backend service `trace ID format`_.
  
  Usage
  -----
  
  Configure the OTel SDK TracerProvider with the provided custom IDs Generator to
  make spans compatible with the AWS X-Ray backend tracing service.
  
  Install the OpenTelemetry SDK package.
  
  ::
  
      pip install opentelemetry-sdk
  
  Next, use the provided `AwsXRayIdGenerator` to initialize the `TracerProvider`.
  
  .. code-block:: python
  
      import opentelemetry.trace as trace
      from opentelemetry.sdk.extension.aws.trace import AwsXRayIdGenerator
      from opentelemetry.sdk.trace import TracerProvider
  
      trace.set_tracer_provider(
          TracerProvider(id_generator=AwsXRayIdGenerator())
      )
  
  API
  ---
  .. _trace ID format: https://docs.aws.amazon.com/xray/latest/devguide/xray-api-sendingdata.html#xray-api-traceids
  """
  
  import random
  import time
  
  from opentelemetry.sdk.trace.id_generator import IdGenerator, RandomIdGenerator
  
  
  class AwsXRayIdGenerator(IdGenerator):
      """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
      more than 30 days ago are rejected, a purely random `TraceId` risks being
      rejected by the service.
  
      See: https://docs.aws.amazon.com/xray/latest/devguide/xray-api-sendingdata.html#xray-api-traceids
      """
  
      random_id_generator = RandomIdGenerator()
  
      def generate_span_id(self) -> int:
          return self.random_id_generator.generate_span_id()
  
      @staticmethod
      def generate_trace_id() -> int:
          trace_time = int(time.time())
          trace_identifier = random.getrandbits(96)
          return (trace_time << 96) + trace_identifier
  