Flask sqlalchemy psycopg2 integration

[Thiyagu55]

Description

Integrating flask sqlcommenter into psycopg2 and sqlalchemy

This can be achieved by enabling enable_commenter flag inside Flask instrument initialization and also in SQLAlchemy Instrumentation or psycopg2 instrumentation

FlaskInstrumentor().instrument_app(app, tracer_provider=provider, enable_commenter=True)

# For sqlalchemy
SQLAlchemyInstrumentor().instrument( enable_commenter=True, engine=engine)

# For psycopg2
Psycopg2Instrumentor().instrument(tracer_provider=tracer_provider, enable_commenter=True)

• The flask instrumentation will append the metrics in opentelemetry context in key name SQLCOMMENTER_VALUES
• The SQLAlchemy ORM or psycopg2 driver will read the context and then append these info to the sql query logs whenever the sql query is made

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

• instrumentation/opentelemetry-instrumentation-flask/tests/test_sqlcommenter.py
• instrumentation/opentelemetry-instrumentation-dbapi/tests/test_dbapi_integration.py test_executemany_flask_integration_comment
• instrumentation/opentelemetry-instrumentation-sqlalchemy/tests/test_sqlcommenter.py test_sqlcommenter_flask_integration

Does This PR Require a Core Repo Change?

• No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[Thiyagu55]

@srikanthccv For your visibility

[srikanthccv]

I like the updated approach better. I will take a closer look again.