131 lines
4.1 KiB
Markdown
131 lines
4.1 KiB
Markdown
# weatherapi Configuration
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`weatherapi` uses a feedapi YAML config file. This file configures the HTTP
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server, database handles, and text template directory used by the service.
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## Discovery
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The executable chooses the config path in this order:
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1. `-config /path/to/config.yml`
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2. non-blank `WEATHERAPI_CONFIG`
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3. `config.yml`
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See [`docs/cli.md`](cli.md) for command examples.
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## Minimal Config
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```yaml
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server:
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listen_addr: ":8080"
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default_format: json
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databases:
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- name: weatherdb
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driver: postgres
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uri: postgres://localhost:5432/weatherdb?sslmode=disable
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username: weatherapi
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password: change-me
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templates:
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base_dir: templates
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```
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A maintained copy is available at
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[`examples/config.minimal.yml`](../examples/config.minimal.yml).
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## Production-Oriented Config
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Use explicit server timeouts, connection pool settings, and secret placeholders
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for production deployments:
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```yaml
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server:
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listen_addr: ":8080"
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default_format: json
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read_timeout: 5s
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write_timeout: 10s
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idle_timeout: 120s
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databases:
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- name: weatherdb
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driver: postgres
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uri: postgres://postgres.example.internal:5432/weatherdb?sslmode=require
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username: weatherapi
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password: ${WEATHERAPI_DB_PASSWORD}
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max_open_conns: 10
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max_idle_conns: 5
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conn_max_lifetime: 30m
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conn_max_idle_time: 5m
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templates:
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base_dir: templates
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```
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A maintained copy is available at
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[`examples/config.production.yml`](../examples/config.production.yml).
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## Reference
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### `server`
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| Field | Required | Default | Description |
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| --- | --- | --- | --- |
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| `listen_addr` | No | `:8080` | Address passed to the HTTP server. |
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| `default_format` | No | `json` | Response format used when neither `format` nor `Accept` selects one. Supported values are `json`, `xml`, and `text`. |
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| `read_timeout` | No | feedapi default | HTTP server read timeout. |
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| `write_timeout` | No | feedapi default | HTTP server write timeout. |
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| `idle_timeout` | No | feedapi default | HTTP keep-alive idle timeout. |
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### `databases`
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`databases` must contain at least one entry. `weatherapi` opens all configured
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databases and uses the first entry as the primary weather data store for all
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implemented reads.
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| Field | Required | Description |
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| --- | --- | --- |
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| `name` | Yes | Database handle name. The first configured name is selected as primary by `cmd/weatherapi`. |
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| `driver` | Yes | Database driver. The implemented deployment uses `postgres`. |
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| `uri` | Yes | PostgreSQL connection URI. |
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| `username` | Yes | Database username. |
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| `password` | Yes | Database password. Use secret injection in real deployments. |
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| `max_open_conns` | No | Maximum open connections for the database pool. |
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| `max_idle_conns` | No | Maximum idle connections for the database pool. |
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| `conn_max_lifetime` | No | Maximum lifetime for pooled connections. |
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| `conn_max_idle_time` | No | Maximum idle time for pooled connections. |
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The database must already contain the weatherfeeder-owned tables read by
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`weatherapi`. This service does not ingest weather data and does not create or
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migrate those tables.
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### `templates`
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| Field | Required | Description |
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| --- | --- | --- |
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| `base_dir` | Yes | Directory containing the `*.txt.tmpl` files used for text responses. |
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The repository includes templates under [`templates/`](../templates/). The
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Docker image copies this directory to `/weatherapi/templates` and runs with
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`/weatherapi` as the working directory.
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## Validation and Defaults
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Configuration is loaded by feedapi. `cmd/weatherapi` adds one local validation
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rule: at least one database entry is required.
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Documented server defaults come from feedapi. Unknown YAML fields are not
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documented as rejected by `weatherapi`; treat unrecognized fields as unsupported
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configuration.
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## Secrets
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Do not commit production passwords, tokens, private hostnames, or private
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connection strings. The examples use placeholders. Inject real values through
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your deployment tooling before starting the service.
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## Related Docs
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- [`docs/cli.md`](cli.md): command-line usage and config path precedence
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- [`docs/api.md`](api.md): HTTP format negotiation and API behavior
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