zabbix-graphql-api/docs/howtos/maintenance.md
Andreas Hilbig fb5e9cbe81 feat: improve Zabbix multi-version compatibility and introduce local development environment
This update enhances compatibility across multiple Zabbix versions and introduces tools for easier local development and testing.

Key improvements and verified version support:
- Verified Zabbix version support: 6.2, 6.4, 7.0, and 7.4.
- Version-specific feature handling:
  - `history.push` is enabled only for Zabbix 7.0+; older versions skip it with a clear error or notice.
  - Conditional JSON-RPC authentication: the `auth` field is automatically added to the request body for versions older than 6.4.
  - Implemented static Zabbix version caching in the datasource to minimize redundant API calls.
- Query optimization refinements:
  - Added mapping for implied fields (e.g., `state` -> `items`, `deviceType` -> `tags`).
  - Automatically prune unnecessary Zabbix parameters (like `selectItems` or `selectTags`) when not requested.
- Local development environment:
  - Added a new `zabbix-local` Docker Compose profile that includes PostgreSQL, Zabbix Server, and Zabbix Web.
  - Supports testing different versions by passing the `ZABBIX_VERSION` environment variable (e.g., 6.2, 6.4, 7.0, 7.4).
  - Provided a sample environment file at `samples/zabbix-local.env`.
- Documentation and Roadmap:
  - Updated README with a comprehensive version compatibility matrix and local environment instructions.
  - Created a new guide: `docs/howtos/local_development.md`.
  - Updated maintenance guides and added "Local Development Environment" as an achieved milestone in the roadmap.
- Test suite enhancements:
  - Improved Smoketest and RegressionTest executors with more reliable resource cleanup and error reporting.
  - Made tests version-aware to prevent failures on older Zabbix instances.

BREAKING CHANGE: Dropped Zabbix 6.0 specific workarounds; the minimum supported version is now 6.2.
2026-02-04 14:01:53 +01:00

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# Technical Maintenance Guide
This guide covers the technical aspects of maintaining and developing the Zabbix GraphQL API.
## 🛠️ Development & Maintenance Tasks
### Code Generation
The project uses [GraphQL Codegen](https://the-guild.dev/graphql/codegen) to generate TypeScript types from the GraphQL schema. This ensures type safety and consistency between the schema and the implementation.
- **Configuration**: `codegen.ts`
- **Generated Output**: `src/schema/generated/graphql.ts`
#### How to Regenerate Types
Whenever you modify any `.graphql` files in the `schema/` directory, you must regenerate the TypeScript types.
For a one-off update (e.g. in a script or before commit):
```bash
npx graphql-codegen --config codegen.ts
```
If you are a developer and want to watch for schema changes continuously:
```bash
npm run codegen
```
### Testing
We use [Jest](https://jestjs.io/) for unit and integration testing.
- **Test Directory**: `src/test/`
- **Execution**:
```bash
npm run test
```
#### Local Development Setup
For running integration tests against a real Zabbix instance, it is recommended to use the [Local Development Environment](./local_development.md). This setup allows you to test the API against specific Zabbix versions (e.g. 6.4, 7.0) in an isolated way.
#### Adding New Tests
- **Location**: Place new test files in `src/test/` with the `.test.ts` extension.
- **Coverage**: Ensure you cover both successful operations and error scenarios.
- **Test Specification**: Every new test must be documented in the [Test Specification](../tests.md).
- **Best Practice**: If you find a bug, first create a reproduction test in `src/test/` to verify the fix.
## 🔄 Updating Dependencies
To keep the project secure and up-to-date:
1. Check for updates: `npm outdated`
2. Update packages: `npm update`
3. Verify with tests: `npm run test`
## 🐳 Docker Image Maintenance
The `Dockerfile` uses a multi-stage build to keep the production image small and secure.
- **Base Image**: Node 24 (LTS)
- **Build Argument**: `API_VERSION` (used to embed the version into the image)
To build a fresh image locally:
```bash
docker build -t zabbix-graphql-api --build-arg API_VERSION=$(git describe --tags --always) .
```
---
**Related Reference**: [Project Configuration Reference](../../README.md#configuration)
**Related Cookbook**: [Extending the Schema](./cookbook.md#recipe-extending-schema-with-a-new-device-type)