cfunctions
Project description
CFunctions
CFunctions (cloud functions, compute functions, construct functions) are a building block of the [constructs programming model] which can be used to package JavaScript code and run it on a cloud system.
Let's take a look at a simple CFunction:
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
{ CFunction } = require("cfunctions")
cfunc = CFunction(
capture=["x", "y"],
code="x + y"
)
print("outfile:", cfunc.outfile)
print("env:", cfunc.env)
The output will look like this:
outfile: /tmp/.cf.out.TAJEO8/cf.js
env: { __CF__x__: '100', __CF__y__: '200' }
The cf.js
file is a a self-contained JavaScript module which can be loaded
through a require()
statement and returns an async function that executes the
code after binding it from a set of environment variables.
Let's execute our cfunction:
$ export __CF__x__=123
$ export __CF__y__=10
$ node -e "require('/tmp/.cf.out.TAJEO8/cf.js')().then(result => console.log(result))"
12310
The CFunction.exec()
static method can also be used to execute the function:
const result = CFunction.exec('/tmp/.cf.out.TAJEO8/cf.js', {
env: {
__CF__x__: 123,
__CF__y__: 10
}
});
console.log(result);
License
Licensed under the Apache 2.0 license.
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