fn project Function files 说明
- func.yaml
- func.json
An example of a function file:
name: fnproject/hello
version: 0.0.1
type: sync
memory: 128
config:
key: value
key2: value2
keyN: valueN
headers:
Content-Type: text/plain
build:
- make
- make test
expects:
config:
- name: SECRET_1
required: true
- name: SECRET_2
required: false
name
is the name and tag to which this function will be pushed to and the route updated to use it.
path
(optional) allows you to overwrite the calculated route from the path position. You may use it to override the calculated route. If you plan to use fn test --remote=""
, this is mandatory.
version
represents current version of the function. When deploying, it is appended to the image as a tag.
runtime
represents programming language runtime, for example, 'go', 'python', 'java', etc. The runtime 'docker' will use the existing Dockerfile if one exists.
build
(optional) is an array of local shell calls which are used to help building the function. TODO: Deprecate this?
type
(optional) allows you to set the type of the route. sync
, for functions whose response are sent back to the requester; orasync
, for functions that are started and return a call ID to customer while it executes in background. Default: sync
.
memory
(optional) allows you to set a maximum memory threshold for this function. If this function exceeds this limit during execution, it is stopped and error message is logged. Default: 128
.
timeout
(optional) is the maximum time a function will be allowed to run. Default is 30 seconds.
headers
(optional) is a set of HTTP headers to be returned in the response of this function calls.
config
(optional) is a set of configuration variables to be passed onto the function as environment variables. These configuration options shall override application configuration during functions execution. See Configuration for more information.
expects
(optional) a list of config/env vars that are required to run this function. These vars will be used when running/testing locally, if found in your local environment. If these vars are not found, local testing will fail.
Hot functions
hot functions support also adds two extra options to this configuration file.
format
(optional) is one of the streaming formats covered at function-format.md.
idle_timeout
(optional) is the time in seconds a container will remain alive without receiving any new requests; hot functions will stay alive as long as they receive a request in this interval. Default: 30
.
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