http-synthetics

An HTTP server with test methods for synthetic tests:

• GET / is a hello-world.
• GET /before-server-shutdown?url=https://someurl returns a 204 and will cause the provided URL to be called when a SIGTERM signal is captured and before stopping the server. Optionally, a delay can be provided to override a wait time in seconds (default is 5s).
• GET /call-after-server-shutdown?url=https://someurl returns a 204 and will cause the provided URL to be called after stopping the server. Optionally, a delay can be provided to override a wait time in seconds (default is 5s).
• PUT /claim-memory?amount=<bytes_count> returns a 204 but before that creates a byte[] slice of the given length. If it goes oom, then it dies. ;-)
• GET /close will cause the server to be shut down. Query parameters:
  • delay (default 0) can be set to a positive number. The code will then wait the amount in seconds before the server is shut down.
  • force (default false) can be set to true. The code then calls the forceful Close() instead of the graceful Shutdown() function on the Go HTTP server.
  • silent (default false) can be set to true. The shutdown will then not be logged.
  • terminate (default true) can be set to false. The code will then after shutting down the server not end the process but wait for another SIGINT or SIGTERM signal.
• GET /compute-resource-token returns details about the mounted compute resource token in the container, or a 404 if no one is present.
• PUT /compute-resource-token?action=login&iam=https://iam.cloud.ibm.com&profile-name=someTrustedProfileName tries to use the mounted compute resource token to create an IAM access token. Returns 204 if that succeeds, 404 is no compute resource token is mounted, 403 if no access token could be created. Query parameters:
  • action must be set to login.
  • iam (default https://iam.cloud.ibm.com) allows to overwrite the IAM endpoint.
  • profileName specifies the name of the trusted profile.
• GET /env?env=someEnvKey returns the value of an environment variable in the response body.
• GET /filesystem?path=<path>, returns 200 with the file content if the path exists and is a file, 204 if it exists but is a directory, 404 if not found, and 500 for any other error.
• HEAD /filesystem?path=<path>, returns 200 if the path exists and is a file, 204 if it exists but is a directory, 404 if not found, and 500 for any other error.
• GET /flaky?code=503 will return a 503 on every other call, with 200 on the respective next call. The code can be omitted, it will default to 502.
• GET /get-url?url=<target-url>, performs a GET request to the target URL and returns the response headers and body from the target.
• HEAD /get-url?url=<target-url>, performs a GET request to the target URL but only returns the status code from the response.
• GET /livecheck returns 204 initially. PUT /livecheck?code=newCode changes this. delay argument can be provided which overrides the default five seconds that it waits before it performs the call.
• GET /request-header?header=someHeaderKey returns the value of a request header in the response body. If the header is present multiple times, then the response contains all values concatenated by comma.
• GET /sleep?delay=5 will return a 204 after five seconds.
• GET /write-regularly?interval=1&count=10 will respond with 200 and write a 4 kB message into the response body every n seconds defined by the interval, n times defined by the count.
• /ws endpoint serves a websocket with an echo service that return everything that is send to it.