patroni.request module

Facilities for handling communication with Patroni’s REST API.

class patroni.request.HTTPSConnectionPool(host: str, port: int | None = None, timeout: _TYPE_TIMEOUT | None = _TYPE_DEFAULT.token, maxsize: int = 1, block: bool = False, headers: Mapping[str, str] | None = None, retries: Retry | bool | int | None = None, _proxy: Url | None = None, _proxy_headers: Mapping[str, str] | None = None, key_file: str | None = None, cert_file: str | None = None, cert_reqs: int | str | None = None, key_password: str | None = None, ca_certs: str | None = None, ssl_version: int | str | None = None, ssl_minimum_version: ssl.TLSVersion | None = None, ssl_maximum_version: ssl.TLSVersion | None = None, assert_hostname: str | Literal[False] | None = None, assert_fingerprint: str | None = None, ca_cert_dir: str | None = None, **conn_kw: Any)

Bases: HTTPSConnectionPool

_validate_conn(*args: Any, **kwargs: Any) → None

Override parent method to silence warnings about requests without certificate verification enabled.

class patroni.request.PatroniPoolManager(*args: Any, **kwargs: Any)

Bases: PoolManager

__init__(*args: Any, **kwargs: Any) → None

class patroni.request.PatroniRequest(config: Config | Dict[str, Any], insecure: bool | None = None)

Bases: object

Wrapper for performing requests to Patroni’s REST API.

Prepares the request manager with the configured settings before performing the request.

__init__(config: Config | Dict[str, Any], insecure: bool | None = None) → None

Create a new PatroniRequest instance with given config.

Parameters:

• config – Patroni YAML configuration.

• insecure –

  how to deal with SSL certs verification:

  • If True it will perform REST API requests without verifying SSL certs; or

  • If False it will perform REST API requests and verify SSL certs; or

  • If None it will behave according to the value of ctl.insecure configuration; or

  • If none of the above applies, then it falls back to False.

_apply_pool_param(param: str, value: Any) → None

Configure param as value in the request manager.

Parameters:

• param – name of the setting to be changed.

• value – new value for param. If None, 0, False, and similar values, then explicit param declaration is removed, in which case it takes its default value, if any.

_apply_ssl_file_param(config: Config | Dict[str, Any], name: str) → str | None

Apply a given SSL related param to the request manager.

Parameters:

• config – Patroni YAML configuration.

• name –

  prefix of the Patroni SSL related setting name. Currently, supports these:

  • cert: gets translated to certfile

  • key: gets translated to keyfile

  Will attempt to fetch the requested key first from ctl section.

Returns:

value of ctl.*name*file if present, None otherwise.

static _get_ctl_value(config: Config | Dict[str, Any], name: str, default: Any = None) → Any | None

Get value of name setting from the ctl section of the config.

Parameters:

• config – Patroni YAML configuration.

• name – name of the setting value to be retrieved.

Returns:

value of ctl.*name* if present, None otherwise.

static _get_restapi_value(config: Config | Dict[str, Any], name: str) → Any | None

Get value of name setting from the restapi section of the config.

Parameters:

• config – Patroni YAML configuration.

• name – name of the setting value to be retrieved.

Returns:

value of restapi -> *name* if present, None otherwise.

reload_config(config: Config | Dict[str, Any]) → None

Apply config to request manager.

Configure these HTTP headers for requests:

• authorization: based on Patroni’ CTL or REST API authentication config;

• user-agent: based on patroni.utils.USER_AGENT.

Also configure SSL related settings for requests:

• ca_certs is configured if ctl.cacert or restapi.cafile is available;

• cert, key and key_password are configured if ctl.certfile is available.

Parameters:

config – Patroni YAML configuration.

request(method: str, url: str, body: Any | None = None, **kwargs: Any) → HTTPResponse

Perform an HTTP request.

Parameters:

• method – the HTTP method to be used, e.g. GET.

• url – the URL to be requested.

• body – anything to be used as the request body.

• kwargs – keyword arguments to be passed to urllib3.PoolManager.request().

Returns:

the response returned upon request.

patroni.request.get(url: str, verify: bool = True, **kwargs: Any) → HTTPResponse

Perform an HTTP GET request.

Note

It uses PatroniRequest so all relevant configuration is applied before processing the request.

Parameters:

• url – full URL for this GET request.

• verify – if it should verify SSL certificates when processing the request.

Returns:

the response returned from the request.