AWS.
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:httpc client for the AWS Lambda Runtime API (version 2018-06-01).
Deliberately dependency free: the only requirement is :inets, which ships
with OTP and therefore comes from the ERTS layer at /opt/otp.
The endpoint is taken from the AWS_LAMBDA_RUNTIME_API environment variable
that Lambda injects into the sandbox, e.g. 127.0.0.1:9001.
Summary
Functions
Posts an initialisation failure.
Posts a handler failure for request_id.
Posts a successful result for request_id.
Long-polls GET /runtime/invocation/next.
Starts a dedicated :httpc profile and caches the Runtime API endpoint.
Functions
Posts an initialisation failure.
Lambda treats this as a fatal cold-start error and will not send any invocation to this sandbox.
Posts a handler failure for request_id.
Posts a successful result for request_id.
Long-polls GET /runtime/invocation/next.
Blocks until Lambda hands over an invocation, which is also the point at which the sandbox is frozen between requests. Returns the response headers (downcased, as a map) and the raw JSON body.
Starts a dedicated :httpc profile and caches the Runtime API endpoint.
A dedicated profile keeps runtime traffic isolated from whatever the handler does with the default profile, and lets us tune keep-alive without affecting user code.