Commits on Apr 22, 2025

1. Enable direct response, stac-fastapi 5.2.0, deprecation warnings (#359) …

   **Related Issue(s):**
   
   - #347 
   
   **Description:**
   
   #### v4.0.0a2 release 
   
   #### Added
   - Added support for high-performance direct response mode for both
   Elasticsearch and Opensearch backends, controlled by the
   `ENABLE_DIRECT_RESPONSE` environment variable. When enabled
   (`ENABLE_DIRECT_RESPONSE=true`), endpoints return Starlette Response
   objects directly, bypassing FastAPI's jsonable_encoder and Pydantic
   serialization for significantly improved performance on large search
   responses. **Note:** In this mode, all FastAPI dependencies (including
   authentication, custom status codes, and validation) are disabled for
   all routes. Default is `false` for safety. A warning is logged at
   startup if enabled. See [issue
   #347](#347)
   
   #### Changed
   - Updated test suite to use `httpx.ASGITransport(app=...)` for FastAPI
   app testing (removes deprecation warning).
   - Updated stac-fastapi parent libraries to 5.2.0. 
   - Migrated Elasticsearch index template creation from legacy
   `put_template` to composable `put_index_template` API in
   `database_logic.py`. This resolves deprecation warnings and ensures
   compatibility with Elasticsearch 7.x and 8.x.
   - Updated all Pydantic models to use `ConfigDict` instead of class-based
   `Config` for Pydantic v2 compatibility. This resolves deprecation
   warnings and prepares for Pydantic v3.
   - Migrated all Pydantic `@root_validator` validators to
   `@model_validator` for Pydantic v2 compatibility.
   - Migrated startup event handling from deprecated
   `@app.on_event("startup")` to FastAPI's recommended lifespan context
   manager. This removes deprecation warnings and ensures compatibility
   with future FastAPI versions.
   
   **PR Checklist:**
   
   - [x] Code is formatted and linted (run `pre-commit run --all-files`)
   - [x] Tests pass (run `make test`)
   - [x] Documentation has been updated to reflect changes, if applicable
   - [x] Changes are added to the changelog

   

   jonhealy1 authored Apr 22, 2025
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