harmacist/healthchecks

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James Kirsop 456a80f1fa Adding tests and docs

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API Reference

SITE_NAME REST API supports listing, creating, updating, pausing and deleting checks in user's account.

API Endpoints

Endpoint Name	Endpoint Address
Get a list of existing checks	`GET SITE_ROOT/api/v1/checks/`
Create a single check	`GET SITE_ROOT/api/v1/checks/<uuid>`
Create a new check	`POST SITE_ROOT/api/v1/checks/`
Update an existing check	`POST SITE_ROOT/api/v1/checks/<uuid>`
Pause monitoring of a check	`POST SITE_ROOT/api/v1/checks/<uuid>/pause`
Delete check	`DELETE SITE_ROOT/api/v1/checks/<uuid>`
Get a list of existing integrations	`GET SITE_ROOT/api/v1/channels/`

Authentication

Your requests to SITE_NAME REST API must authenticate using an API key. Each project in your SITE_NAME account has separate API keys. There are no account-wide API keys. By default, a project on SITE_NAME doesn't have an API key. You can create read-write and read-only API keys in the Project Settings page.

Key Type	Description
Regular API key	Have full access to all documented API endpoints.
Read-only API key	Only work with the Get a list of existing checks endpoint. Some fields are omitted from the API responses.

The client can authenticate itself by sending an appropriate HTTP request header. The header's name should be X-Api-Key and its value should be your API key.

Alternatively, for POST requests with a JSON request body, the client can include an api_key field in the JSON document. See below the "Create a check" section for an example.

API Requests

For POST requests, the SITE_NAME API expects request body to be a JSON document (not a multipart/form-data encoded form data).

API Responses

SITE_NAME uses HTTP status codes wherever possible. In general, 2xx class indicates success, 4xx indicates an client error, and 5xx indicates a server error.

The response may contain a JSON document with additional data.

Get a List of Existing Checks {: #list-checks .rule }

GET SITE_ROOT/api/v1/checks/

Returns a list of checks belonging to the user, optionally filtered by one or more tags.

Query String Parameters

tag=<value>

Filters the checks, and returns only the checks that are tagged with the specified value.

This parameter can be repeated multiple times.

Example:

SITE_ROOT/api/v1/checks/?tag=foo&tag=bar

Response Codes

200 OK: The request succeeded.
401 Unauthorized: The API key is either missing or invalid.

Example Request

curl --header "X-Api-Key: your-api-key" SITE_ROOT/api/v1/checks/

Example Response

{
  "checks": [
    {
      "channels": "4ec5a071-2d08-4baa-898a-eb4eb3cd6941,746a083e-f542-4554-be1a-707ce16d3acc",
      "desc": "Longer free-form description goes here",
      "grace": 900,
      "last_ping": "2017-01-04T13:24:39.903464+00:00",
      "n_pings": 1,
      "name": "Api test 1",
      "next_ping": "2017-01-04T14:24:39.903464+00:00",
      "pause_url": "SITE_ROOT/api/v1/checks/662ebe36-ecab-48db-afe3-e20029cb71e6/pause",
      "ping_url": "PING_ENDPOINT662ebe36-ecab-48db-afe3-e20029cb71e6",
      "status": "up",
      "tags": "foo",
      "timeout": 3600,
      "update_url": "SITE_ROOT/api/v1/checks/662ebe36-ecab-48db-afe3-e20029cb71e6"
    },
    {
      "channels": "",
      "desc": "",
      "grace": 3600,
      "last_ping": null,
      "n_pings": 0,
      "name": "Api test 2",
      "next_ping": null,
      "pause_url": "SITE_ROOT/api/v1/checks/9d17c61f-5c4f-4cab-b517-11e6b2679ced/pause",
      "ping_url": "PING_ENDPOINT9d17c61f-5c4f-4cab-b517-11e6b2679ced",
      "schedule": "0/10 * * * *",
      "status": "new",
      "tags": "bar baz",
      "tz": "UTC",
      "update_url": "SITE_ROOT/api/v1/checks/9d17c61f-5c4f-4cab-b517-11e6b2679ced"
    }
  ]
}

When using the read-only API key, the following fields are omitted: ping_url, update_url, pause_url, channels. An extra unique_key field is added. This identifier is stable across API calls. Example:

{
  "checks": [
    {
      "desc": "Longer free-form description goes here",
      "grace": 900,
      "last_ping": "2017-01-04T13:24:39.903464+00:00",
      "n_pings": 1,
      "name": "Api test 1",
      "status": "up",
      "tags": "foo",
      "timeout": 3600,
      "unique_key": "2872190d95224bad120f41d3c06aab94b8175bb6"
    },
    {
      "desc": "",
      "grace": 3600,
      "last_ping": null,
      "n_pings": 0,
      "name": "Api test 2",
      "next_ping": null,
      "schedule": "0/10 * * * *",
      "status": "new",
      "tags": "bar baz",
      "tz": "UTC",
      "unique_key": "9b5fc29129560ff2c5c1803803a7415e4f80cf7e"
    }
  ]
}

Get a single Check {: #get-check .rule }

GET SITE_ROOT/api/v1/checks/<uuid>

Returns a JSON object containing information information from a single check.

Response Codes

200 OK: The request succeeded.
401 Unauthorized: The API key is either missing or invalid.

Example Request

curl --header "X-Api-Key: your-api-key" SITE_ROOT/api/v1/checks/<uuid>

Example Response

{
  "channels": "4ec5a071-2d08-4baa-898a-eb4eb3cd6941,746a083e-f542-4554-be1a-707ce16d3acc",
  "desc": "Longer free-form description goes here",
  "grace": 900,
  "last_ping": "2017-01-04T13:24:39.903464+00:00",
  "n_pings": 1,
  "name": "Api test 1",
  "next_ping": "2017-01-04T14:24:39.903464+00:00",
  "pause_url": "SITE_ROOT/api/v1/checks/662ebe36-ecab-48db-afe3-e20029cb71e6/pause",
  "ping_url": "PING_ENDPOINT662ebe36-ecab-48db-afe3-e20029cb71e6",
  "status": "up",
  "tags": "foo",
  "timeout": 3600,
  "update_url": "SITE_ROOT/api/v1/checks/662ebe36-ecab-48db-afe3-e20029cb71e6"
}

Create a Check {: #create-check .rule }

POST SITE_ROOT/api/v1/checks/

Creates a new check and returns its ping URL. All request parameters are optional and will use their default values if omitted.

This API call can be used to create both "simple" and "cron" checks. To create a "simple" check, specify the "timeout" parameter. To create a "cron" check, specify the "schedule" and "tz" parameters.

Request Parameters

name

string, optional, default value: ""

Name for the new check.

tags

string, optional, default value: ""

A space-delimited list of tags for the new check. Example:

{"tags": "reports staging"}

desc

string, optional.

Description for the check.

timeout

number, optional, default value: {{ default_timeout }}.

A number of seconds, the expected period of this check.

Minimum: 60 (one minute), maximum: 2592000 (30 days).

Example for 5 minute timeout:

{"kind": "simple", "timeout": 300}

grace

number, optional, default value: {{ default_grace }}.

A number of seconds, the grace period for this check.

Minimum: 60 (one minute), maximum: 2592000 (30 days).

schedule

string, optional, default value: "* * * * *".

A cron expression defining this check's schedule.

If you specify both "timeout" and "schedule" parameters, "timeout" will be ignored and "schedule" will be used.

Example for a check running every half-hour:

{"schedule": "0,30 * * * *"}

tz

string, optional, default value: "UTC".

Server's timezone. This setting only has effect in combination with the "schedule" paremeter.

Example:

{"tz": "Europe/Riga"}

channels

string, optional

By default, if a check is created through API, no notification channels (integrations) are assigned to it. So, when the check goes up or down, no notifications will get sent.

Set this field to a special value "*" to automatically assign all existing integrations.

To assign specific integrations, use a comma-separated list of integration identifiers. Use the Get a List of Existing Integrations call to look up integration identifiers.

unique

array of string values, optional, default value: [].

Before creating a check, look for existing checks, filtered by fields listed in unique. If a matching check is found, return it with HTTP status code 200. If no matching check is found, proceed as normal: create a check and return it with HTTP status code 201.

The accepted values are: name, tags, timeout and grace.

Example:

{"name": "Backups", unique: ["name"]}

In this example, if a check named "Backups" exists, it will be returned. Otherwise, a new check will be created and returned.

Response Codes

201 Created: The check was successfully created.
200 OK: The unique parameter was used and an existing check was matched.
400 Bad Request: The request is not well-formed, violates schema, or uses invalid field values.
401 Unauthorized: The API key is either missing or invalid.
403 Forbidden: The account's check limit has been reached. For free accounts, the limit is 20 checks per account.

Example Request

curl SITE_ROOT/api/v1/checks/ \
    --header "X-Api-Key: your-api-key" \
    --data '{"name": "Backups", "tags": "prod www", "timeout": 3600, "grace": 60}'

Or, alternatively:

curl SITE_ROOT/api/v1/checks/ \
    --data '{"api_key": "your-api-key", "name": "Backups", "tags": "prod www", "timeout": 3600, "grace": 60}'

Example Response

{
  "channels": "",
  "desc": "",
  "grace": 60,
  "last_ping": null,
  "n_pings": 0,
  "name": "Backups",
  "next_ping": null,
  "pause_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc/pause",
  "ping_url": "PING_ENDPOINTf618072a-7bde-4eee-af63-71a77c5723bc",
  "status": "new",
  "tags": "prod www",
  "timeout": 3600,
  "update_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc",
}

Update an Existing Check {: #update-check .rule }

POST SITE_ROOT/api/v1/checks/<uuid>

Updates an existing check. All request parameters are optional. The check is updated only with the supplied request parameters. If any parameter is omitted, its value is left unchanged.

Request Parameters

name

string, optional.

Name for the check.

tags

string, optional.

A space-delimited list of tags for the check.

Example:

{"tags": "reports staging"}

desc

string, optional.

Description for the check.

timeout

number, optional.

A number of seconds, the expected period of this check.

Minimum: 60 (one minute), maximum: 2592000 (30 days).

Example for 5 minute timeout:

{"kind": "simple", "timeout": 300}

grace

number, optional.

A number of seconds, the grace period for this check.

Minimum: 60 (one minute), maximum: 2592000 (30 days).

schedule

string, optional.

A cron expression defining this check's schedule.

If you specify both "timeout" and "schedule" parameters, "timeout" will be ignored and "schedule" will be used.

Example for a check running every half-hour:

{"schedule": "0,30 * * * *"}

tz

string, optional.

Server's timezone. This setting only has effect in combination with the "schedule" paremeter.

Example:

{"tz": "Europe/Riga"}

channels

string, optional.

Set this field to a special value "*" to automatically assign all existing notification channels.

Set this field to a special value "" (empty string) to automatically unassign all notification channels.

Set this field to a comma-separated list of channel identifiers to assign specific notification channels.

Example:

{"channels": "4ec5a071-2d08-4baa-898a-eb4eb3cd6941,746a083e-f542-4554-be1a-707ce16d3acc"}

Response Codes

200 OK: The check was successfully updated.
400 Bad Request: The request is not well-formed, violates schema, or uses invalid field values.
401 Unauthorized: The API key is either missing or invalid.
403 Forbidden: Access denied, wrong API key.
404 Not Found: The specified check does not exist.

Example Request

curl SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc \
    --header "X-Api-Key: your-api-key" \
    --data '{"name": "Backups", "tags": "prod www", "timeout": 3600, "grace": 60}'

Or, alternatively:

curl SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc \
    --data '{"api_key": "your-api-key", "name": "Backups", "tags": "prod www", "timeout": 3600, "grace": 60}'

Example Response

{
  "channels": "",
  "desc": "",
  "grace": 60,
  "last_ping": null,
  "n_pings": 0,
  "name": "Backups",
  "next_ping": null,
  "pause_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc/pause",
  "ping_url": "PING_ENDPOINTf618072a-7bde-4eee-af63-71a77c5723bc",
  "status": "new",
  "tags": "prod www",
  "timeout": 3600,
  "update_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc",
}

Pause Monitoring of a Check {: #pause-check .rule }

POST SITE_ROOT/api/v1/checks/<uuid>/pause

Disables monitoring for a check, without removing it. The check goes into a "paused" state. You can resume monitoring of the check by pinging it.

This API call has no request parameters.

Response Codes

200 OK: The check was successfully paused.
401 Unauthorized: The API key is either missing or invalid.
403 Forbidden: Access denied, wrong API key.
404 Not Found: The specified check does not exist.

Example Request

curl SITE_ROOT/api/v1/checks/0c8983c9-9d73-446f-adb5-0641fdacc9d4/pause \
    --request POST --header "X-Api-Key: your-api-key" --data ""

Note: the --data "" argument forces curl to send a Content-Length request header even though the request body is empty. For HTTP POST requests, the Content-Length header is sometimes required by some network proxies and web servers.

Example Response

{
  "channels": "",
  "desc": "",
  "grace": 60,
  "last_ping": null,
  "n_pings": 0,
  "name": "Backups",
  "next_ping": null,
  "pause_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc/pause",
  "ping_url": "PING_ENDPOINTf618072a-7bde-4eee-af63-71a77c5723bc",
  "status": "paused",
  "tags": "prod www",
  "timeout": 3600,
  "update_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc"
}

Delete Check {: #delete-check .rule }

DELETE SITE_ROOT/api/v1/checks/<uuid>

Permanently deletes the check from user's account. Returns JSON representation of the check that was just deleted.

This API call has no request parameters.

Response Codes

200 OK: The check was successfully deleted.
401 Unauthorized: The API key is either missing or invalid.
403 Forbidden: Access denied, wrong API key.
404 Not Found: The specified check does not exist.

Example Request

curl SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc \
    --request DELETE --header "X-Api-Key: your-api-key"

Example Response

{
  "channels": "",
  "desc": "",
  "grace": 60,
  "last_ping": null,
  "n_pings": 0,
  "name": "Backups",
  "next_ping": null,
  "pause_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc/pause",
  "ping_url": "PING_ENDPOINTf618072a-7bde-4eee-af63-71a77c5723bc",
  "status": "new",
  "tags": "prod www",
  "timeout": 3600,
  "update_url": "SITE_ROOT/api/v1/checks/f618072a-7bde-4eee-af63-71a77c5723bc",
}

Get a List of Existing Integrations {: #list-channels .rule }

GET SITE_ROOT/api/v1/channels/

Returns a list of integrations belonging to the user.

Response Codes

200 OK: The request succeeded.
401 Unauthorized: The API key is either missing or invalid.

Example Request

curl --header "X-Api-Key: your-api-key" SITE_ROOT/api/v1/channels/

Example Response

{
  "channels": [
    {
      "id": "4ec5a071-2d08-4baa-898a-eb4eb3cd6941",
      "name": "My Work Email",
      "kind": "email"
    },
    {
      "id": "746a083e-f542-4554-be1a-707ce16d3acc",
      "name": "My Phone",
      "kind": "sms"
    }
  ]
}

16 KiB Raw Blame History

API Reference

API Endpoints

Authentication

API Requests

API Responses

Get a List of Existing Checks {: #list-checks .rule }

Query String Parameters

Response Codes

Example Request

Example Response

Get a single Check {: #get-check .rule }

Response Codes

Example Request

Example Response

Create a Check {: #create-check .rule }

Request Parameters

Response Codes

Example Request

Example Response

Update an Existing Check {: #update-check .rule }

Request Parameters

Response Codes

Example Request

Example Response

Pause Monitoring of a Check {: #pause-check .rule }

Response Codes

Example Request

Example Response

Delete Check {: #delete-check .rule }

Response Codes

Example Request

Example Response

Get a List of Existing Integrations {: #list-channels .rule }

Response Codes

Example Request

Example Response

16 KiB

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