feat(tracing): add support for google agentic development kit (adk) (#14588)

Adds support for APM tracing and LLM Observability for the google-adk
library.

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met 
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

---------

Co-authored-by: Sam Brenner <[email protected]>

Author: wconti27

.github/CODEOWNERS

@@ -144,6 +144,7 @@ ddtrace/contrib/internal/botocore/services/bedrock.py         @DataDog/ml-observ
 ddtrace/contrib/internal/botocore/services/bedrock_agents.py  @DataDog/ml-observability
 ddtrace/contrib/botocore/services/bedrock.py                  @DataDog/ml-observability
 ddtrace/contrib/internal/anthropic                            @DataDog/ml-observability
+ddtrace/contrib/internal/google_adk                           @DataDog/ml-observability
 ddtrace/contrib/internal/google_generativeai                  @DataDog/ml-observability
 ddtrace/contrib/internal/google_genai                         @DataDog/ml-observability
 ddtrace/contrib/internal/vertexai                             @DataDog/ml-observability
@@ -164,6 +165,7 @@ tests/contrib/botocore/test_bedrock_agents_llmobs.py          @DataDog/ml-observ
 tests/contrib/botocore/bedrock_utils.py                       @DataDog/ml-observability
 tests/contrib/botocore/bedrock_cassettes                      @DataDog/ml-observability
 tests/contrib/anthropic                                       @DataDog/ml-observability
+tests/contrib/google_adk                                      @DataDog/ml-observability
 tests/contrib/google_generativeai                             @DataDog/ml-observability
 tests/contrib/google_genai                                    @DataDog/ml-observability
 tests/contrib/vertexai                                        @DataDog/ml-observability
@@ -182,6 +184,7 @@ tests/snapshots/tests.contrib.openai.*                        @DataDog/ml-observ
 tests/snapshots/tests.contrib.vertexai.*                      @DataDog/ml-observability
 tests/snapshots/tests.contrib.botocore.test_bedrock_agents.*  @DataDog/ml-observability
 tests/snapshots/tests.contrib.botocore.test_bedrock.*         @DataDog/ml-observability
+tests/snapshots/tests.contrib.google_adk.*                   @DataDog/ml-observability
 tests/snapshots/tests.contrib.google_generativeai.*           @DataDog/ml-observability
 tests/snapshots/tests.contrib.langgraph.*                     @DataDog/ml-observability
 tests/snapshots/tests.contrib.crewai.*                        @DataDog/ml-observability

.riot/requirements/1227878.txt

@@ -0,0 +1,121 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/1227878.in
+#
+absolufy-imports==0.3.1
+alembic==1.16.5
+annotated-types==0.7.0
+anyio==4.10.0
+attrs==25.3.0
+authlib==1.6.3
+cachetools==5.5.2
+certifi==2025.8.3
+cffi==2.0.0
+charset-normalizer==3.4.3
+click==8.2.1
+cloudpickle==3.1.1
+coverage[toml]==7.10.6
+cryptography==45.0.7
+deprecated==1.2.18
+docstring-parser==0.17.0
+fastapi==0.116.1
+google-adk==1.14.1
+google-api-core[grpc]==2.25.1
+google-api-python-client==2.181.0
+google-auth==2.40.3
+google-auth-httplib2==0.2.0
+google-cloud-aiplatform[agent-engines]==1.113.0
+google-cloud-appengine-logging==1.6.2
+google-cloud-audit-log==0.3.2
+google-cloud-bigquery==3.37.0
+google-cloud-bigtable==2.32.0
+google-cloud-core==2.4.3
+google-cloud-logging==3.12.1
+google-cloud-resource-manager==1.14.2
+google-cloud-secret-manager==2.24.0
+google-cloud-spanner==3.57.0
+google-cloud-speech==2.33.0
+google-cloud-storage==2.19.0
+google-cloud-trace==1.16.2
+google-crc32c==1.7.1
+google-genai==1.36.0
+google-resumable-media==2.7.2
+googleapis-common-protos[grpc]==1.70.0
+graphviz==0.21
+greenlet==3.2.4
+grpc-google-iam-v1==0.14.2
+grpc-interceptor==0.15.4
+grpcio==1.74.0
+grpcio-status==1.74.0
+h11==0.16.0
+httpcore==1.0.9
+httplib2==0.31.0
+httpx==0.28.1
+httpx-sse==0.4.1
+hypothesis==6.45.0
+idna==3.10
+importlib-metadata==8.7.0
+iniconfig==2.1.0
+jsonschema==4.25.1
+jsonschema-specifications==2025.9.1
+mako==1.3.10
+markupsafe==3.0.2
+mcp==1.14.0
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+multidict==6.6.4
+numpy==2.3.3
+opentelemetry-api==1.37.0
+opentelemetry-exporter-gcp-trace==1.9.0
+opentelemetry-resourcedetector-gcp==1.9.0a0
+opentelemetry-sdk==1.37.0
+opentelemetry-semantic-conventions==0.58b0
+opentracing==2.4.0
+packaging==25.0
+pluggy==1.6.0
+propcache==0.3.2
+proto-plus==1.26.1
+protobuf==6.32.1
+pyasn1==0.6.1
+pyasn1-modules==0.4.2
+pycparser==2.23
+pydantic==2.11.9
+pydantic-core==2.33.2
+pydantic-settings==2.10.1
+pygments==2.19.2
+pyparsing==3.2.4
+pytest==8.4.2
+pytest-asyncio==1.2.0
+pytest-cov==7.0.0
+pytest-mock==3.15.0
+python-dateutil==2.9.0.post0
+python-dotenv==1.1.1
+python-multipart==0.0.20
+pyyaml==6.0.2
+referencing==0.36.2
+requests==2.32.5
+rpds-py==0.27.1
+rsa==4.9.1
+shapely==2.1.1
+six==1.17.0
+sniffio==1.3.1
+sortedcontainers==2.4.0
+sqlalchemy==2.0.43
+sqlalchemy-spanner==1.16.0
+sqlparse==0.5.3
+sse-starlette==3.0.2
+starlette==0.47.3
+tenacity==8.5.0
+typing-extensions==4.15.0
+typing-inspection==0.4.1
+tzlocal==5.3.1
+uritemplate==4.2.0
+urllib3==2.5.0
+uvicorn==0.35.0
+vcrpy==7.0.0
+watchdog==6.0.0
+websockets==15.0.1
+wrapt==1.17.3
+yarl==1.20.1
+zipp==3.23.0

.riot/requirements/18d669b.txt

@@ -0,0 +1,106 @@
+#
+# This file is autogenerated by pip-compile with Python 3.13
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/18d669b.in
+#
+annotated-types==0.7.0
+anyio==4.10.0
+attrs==25.3.0
+authlib==1.6.4
+cachetools==5.5.2
+certifi==2025.8.3
+cffi==2.0.0
+charset-normalizer==3.4.3
+click==8.2.1
+coverage[toml]==7.10.6
+cryptography==46.0.1
+deprecated==1.2.18
+docstring-parser==0.17.0
+fastapi==0.116.2
+google-adk==1.0.0
+google-api-core[grpc]==2.25.1
+google-api-python-client==2.182.0
+google-auth==2.40.3
+google-auth-httplib2==0.2.0
+google-cloud-aiplatform==1.114.0
+google-cloud-bigquery==3.37.0
+google-cloud-core==2.4.3
+google-cloud-resource-manager==1.14.2
+google-cloud-secret-manager==2.24.0
+google-cloud-speech==2.33.0
+google-cloud-storage==2.19.0
+google-cloud-trace==1.16.2
+google-crc32c==1.7.1
+google-genai==1.38.0
+google-resumable-media==2.7.2
+googleapis-common-protos[grpc]==1.70.0
+graphviz==0.21
+grpc-google-iam-v1==0.14.2
+grpcio==1.75.0
+grpcio-status==1.75.0
+h11==0.16.0
+httpcore==1.0.9
+httplib2==0.31.0
+httpx==0.28.1
+httpx-sse==0.4.1
+hypothesis==6.45.0
+idna==3.10
+importlib-metadata==8.7.0
+iniconfig==2.1.0
+jsonschema==4.25.1
+jsonschema-specifications==2025.9.1
+mcp==1.14.0
+mock==5.2.0
+multidict==6.6.4
+numpy==2.3.3
+opentelemetry-api==1.37.0
+opentelemetry-exporter-gcp-trace==1.9.0
+opentelemetry-resourcedetector-gcp==1.9.0a0
+opentelemetry-sdk==1.37.0
+opentelemetry-semantic-conventions==0.58b0
+opentracing==2.4.0
+packaging==25.0
+pluggy==1.6.0
+propcache==0.3.2
+proto-plus==1.26.1
+protobuf==6.32.1
+pyasn1==0.6.1
+pyasn1-modules==0.4.2
+pycparser==2.23
+pydantic==2.11.9
+pydantic-core==2.33.2
+pydantic-settings==2.10.1
+pygments==2.19.2
+pyparsing==3.2.4
+pytest==8.4.2
+pytest-asyncio==1.2.0
+pytest-cov==7.0.0
+pytest-mock==3.15.1
+python-dateutil==2.9.0.post0
+python-dotenv==1.1.1
+python-multipart==0.0.20
+pyyaml==6.0.2
+referencing==0.36.2
+requests==2.32.5
+rpds-py==0.27.1
+rsa==4.9.1
+shapely==2.1.1
+six==1.17.0
+sniffio==1.3.1
+sortedcontainers==2.4.0
+sqlalchemy==2.0.43
+sse-starlette==3.0.2
+starlette==0.48.0
+tenacity==9.1.2
+typing-extensions==4.15.0
+typing-inspection==0.4.1
+tzlocal==5.3.1
+uritemplate==4.2.0
+urllib3==2.5.0
+uvicorn==0.35.0
+vcrpy==7.0.0
+websockets==15.0.1
+wrapt==1.17.3
+yarl==1.20.1
+zipp==3.23.0

.riot/requirements/1995aee.txt

@@ -0,0 +1,109 @@
+#
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/1995aee.in
+#
+annotated-types==0.7.0
+anyio==4.10.0
+attrs==25.3.0
+authlib==1.6.4
+backports-asyncio-runner==1.2.0
+cachetools==5.5.2
+certifi==2025.8.3
+cffi==2.0.0
+charset-normalizer==3.4.3
+click==8.2.1
+coverage[toml]==7.10.6
+cryptography==46.0.1
+deprecated==1.2.18
+docstring-parser==0.17.0
+exceptiongroup==1.3.0
+fastapi==0.116.2
+google-adk==1.0.0
+google-api-core[grpc]==2.25.1
+google-api-python-client==2.182.0
+google-auth==2.40.3
+google-auth-httplib2==0.2.0
+google-cloud-aiplatform==1.114.0
+google-cloud-bigquery==3.37.0
+google-cloud-core==2.4.3
+google-cloud-resource-manager==1.14.2
+google-cloud-secret-manager==2.24.0
+google-cloud-speech==2.33.0
+google-cloud-storage==2.19.0
+google-cloud-trace==1.16.2
+google-crc32c==1.7.1
+google-genai==1.38.0
+google-resumable-media==2.7.2
+googleapis-common-protos[grpc]==1.70.0
+graphviz==0.21
+grpc-google-iam-v1==0.14.2
+grpcio==1.75.0
+grpcio-status==1.75.0
+h11==0.16.0
+httpcore==1.0.9
+httplib2==0.31.0
+httpx==0.28.1
+httpx-sse==0.4.1
+hypothesis==6.45.0
+idna==3.10
+importlib-metadata==8.7.0
+iniconfig==2.1.0
+jsonschema==4.25.1
+jsonschema-specifications==2025.9.1
+mcp==1.14.0
+mock==5.2.0
+multidict==6.6.4
+numpy==2.2.6
+opentelemetry-api==1.37.0
+opentelemetry-exporter-gcp-trace==1.9.0
+opentelemetry-resourcedetector-gcp==1.9.0a0
+opentelemetry-sdk==1.37.0
+opentelemetry-semantic-conventions==0.58b0
+opentracing==2.4.0
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+propcache==0.3.2
+proto-plus==1.26.1
+protobuf==6.32.1
+pyasn1==0.6.1
+pyasn1-modules==0.4.2
+pycparser==2.23
+pydantic==2.11.9
+pydantic-core==2.33.2
+pydantic-settings==2.10.1
+pygments==2.19.2
+pyparsing==3.2.4
+pytest==8.4.2
+pytest-asyncio==1.2.0
+pytest-cov==7.0.0
+pytest-mock==3.15.1
+python-dateutil==2.9.0.post0
+python-dotenv==1.1.1
+python-multipart==0.0.20
+pyyaml==6.0.2
+referencing==0.36.2
+requests==2.32.5
+rpds-py==0.27.1
+rsa==4.9.1
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+starlette==0.48.0
+tenacity==9.1.2
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+tzlocal==5.3.1
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+vcrpy==7.0.0
+websockets==15.0.1
+wrapt==1.17.3
+yarl==1.20.1
+zipp==3.23.0