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HTTP Endpoint Monitoring

Metoro’s HTTP Endpoint Monitoring allows you to monitor the health and availability of your HTTP APIs and web services. You can configure monitors to regularly check your endpoints and track their response times and status.

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Features

  • Flexible Status Code Matching: Support for exact matches (e.g., 200), wildcards (e.g., 2XX), and multiple patterns (e.g., 200,201,X04)
  • Response Body Validation: Validate response bodies against regular expressions
  • Custom Headers: Add custom headers to your requests
  • Multiple HTTP Methods: Support for GET, POST, PUT, PATCH, and DELETE
  • Request Body: Include request bodies for POST, PUT, and PATCH requests

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Configuration Options

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Basic Settings

  • Monitor Name: A descriptive name for your monitor
  • Check Type: Select “HTTP” for HTTP endpoint monitoring
  • Endpoint URL: The complete URL to monitor (including http:// or https://)
  • HTTP Method: The HTTP method to use (GET, POST, PUT, PATCH, DELETE)
  • Check Frequency: How often to check the endpoint

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Status Code Validation

You can specify expected status codes using:

  • Exact codes: 200
  • Wildcards: 2XX (any 2XX status) You must use uppercase for wildcards.
  • Multiple patterns: 200,201,X04

Examples:

  • 200: Expect exactly 200 OK
  • 2XX: Accept any successful response
  • X00: Accept any status code ending in 00
  • 200,201,202: Accept any of these specific codes

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Response Body Validation

You can optionally validate the response body using regular expressions. This is useful for:

  • Ensuring specific content is present
  • Validating response format
  • Checking for error messages

Example patterns:

  • .*"status":"healthy".*: Check for a healthy status in JSON
  • ^OK$: Expect exactly “OK”
  • version: [0-9]+\.[0-9]+\.[0-9]+: Match a semantic version number

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Headers

Add custom headers to your requests. Some common use cases:

  • Authentication tokens
  • API keys
  • Content type specifications

For POST/PUT requests, the Content-Type header is automatically set to application/json.

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Request Body

For POST, PUT, and PATCH requests, you can specify a request body to send with each check.

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Example HTTP Monitor Configuration

Here’s an example configuration for monitoring a REST API:

  • Monitor Name: API Health Check
  • Check Type: HTTP
  • Endpoint URL: https://api.example.com/health
  • HTTP Method: GET
  • Check Frequency: Every 1 minute
  • Expected Status Code: 200
  • Response Body Regex: .“status”:“healthy”.
  • Headers:
    • Authorization: Bearer token123
    • Accept: application/json

This monitor will check the API health endpoint every minute, verify it returns a 200 status code, and confirm the response contains a “healthy” status.