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97 lines
3.5 KiB
Markdown
97 lines
3.5 KiB
Markdown
# Configuration
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Library configuration is made in settings.py. All parameters start with `CLICKHOUSE_` prefix.
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Prefix can be changed using `CLICKHOUSE_SETTINGS_PREFIX` parameter.
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### CLICKHOUSE_SETTINGS_PREFIX
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Defaults to: `'CLICKHOUSE_'`
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You can change `CLICKHOUSE_` prefix in settings using this parameter to anything your like.
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### CLICKHOUSE_DATABASES
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Defaults to: `{}`
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A dictionary, defining databases in django-like style.
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Key is an alias to communicate with this database in [connections](databases.md#getting-database-objects) and [using](routing.md#settings-database-in-queryset).
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Value is a configuration dict with parameters:
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* [infi.clickhouse_orm database parameters](https://github.com/Infinidat/infi.clickhouse_orm/blob/develop/docs/class_reference.md#database)
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* `migrate: bool` - indicates if this database should be migrated. See [migrations](migrations.md).
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Example:
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```python
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CLICKHOUSE_DATABASES = {
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'default': {
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'db_name': 'test',
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'username': 'default',
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'password': ''
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},
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'reader': {
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'db_name': 'read_only',
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'username': 'reader',
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'readonly': True,
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'password': ''
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}
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}
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```
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### CLICKHOUSE_DEFAULT_DB_ALIAS
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Defaults to: `'default'`
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A database alias to use in [QuerySets](queries.md) if direct [using](routing.md#settings-database-in-queryset) is not specified.
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### CLICKHOUSE_SYNC_STORAGE
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Defaults to: `'django_clickhouse.storages.RedisStorage'`
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An intermediate storage class to use. Can be a string or class. [More info about storages](storages.md).
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### CLICKHOUSE_REDIS_CONFIG
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Default to: `None`
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Redis configuration for [RedisStorage](storages.md#redisstorage).
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If given, should be a dictionary of parameters to pass to [redis-py](https://redis-py.readthedocs.io/en/latest/#redis.Redis).
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Example:
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```python
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CLICKHOUSE_REDIS_CONFIG = {
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'host': '127.0.0.1',
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'port': 6379,
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'db': 8,
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'socket_timeout': 10
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}
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```
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### CLICKHOUSE_SYNC_BATCH_SIZE
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Defaults to: `10000`
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Maximum number of operations, fetched by sync process from intermediate storage per sync round.
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### CLICKHOUSE_SYNC_DELAY
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Defaults to: `5`
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A delay in seconds between two sync rounds start.
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### CLICKHOUSE_MODELS_MODULE
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Defaults to: `'clickhouse_models'`
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Module name inside [django app](https://docs.djangoproject.com/en/3.0/intro/tutorial01/),
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where [ClickHouseModel](models.md#clickhousemodel) classes are search during migrations.
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### CLICKHOUSE_DATABASE_ROUTER
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Defaults to: `'django_clickhouse.routers.DefaultRouter'`
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A dotted path to class, representing [database router](routing.md#router).
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### CLICKHOUSE_MIGRATIONS_PACKAGE
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Defaults to: `'clickhouse_migrations'`
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A python package name inside [django app](https://docs.djangoproject.com/en/3.0/intro/tutorial01/),
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where migration files are searched.
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### CLICKHOUSE_MIGRATION_HISTORY_MODEL
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Defaults to: `'django_clickhouse.migrations.MigrationHistory'`
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A dotted name of a ClickHouseModel subclass (including module path),
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representing [MigrationHistory model](migrations.md#migrationhistory-clickhousemodel).
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### CLICKHOUSE_MIGRATE_WITH_DEFAULT_DB
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Defaults to: `True`
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A boolean flag enabling automatic ClickHouse migration,
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when you call [`migrate`](https://docs.djangoproject.com/en/2.2/ref/django-admin/#django-admin-migrate) on `default` database.
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### CLICKHOUSE_STATSD_PREFIX
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Defaults to: `clickhouse`
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A prefix in [statsd](https://pythonhosted.org/python-statsd/) added to each library metric. See [monitoring](monitoring.md).
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### CLICKHOUSE_CELERY_QUEUE
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Defaults to: `'celery'`
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A name of a queue, used by celery to plan library sync tasks.
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