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@globocom/backstage-functions
Advanced tools
Backstage Functions is an Open Source Serverless Platform able to store and execute code.
Which languages are supported? Currently, only Javascript.
Is it based on events? Not yet.
How the code execution happens in an isolated way? It uses the Backstage Functions Sandbox.
git clone https://github.com/backstage/functions.git
make setup
make run
To format your log in json, please run:
export LOG_APP_FORMAT=json
mkdir functions
cd functions
curl 'https://raw.githubusercontent.com/backstage/functions/master/docker-compose.yml' > docker-compose.yml
docker-compose up
Your function will have a file, which you define any name you want, and it has to have a function called main, with two parameters: req and res. Req represents the Request and Res represents the Response.
At the end of your code, you'll have to use the send method.
function main(req, res) {
const name = (req.body && req.body.name) || "World"
res.send({ say: `Hello ${name}!` })
}
To set your function, you can make a PUT request to /functions/:namespace/:name:
curl -i -X PUT http://localhost:8100/functions/example/hello-world \
-H 'content-type: application/json' \
-d '{"code":"function main(req, res) {\n const name = (req.body && req.body.name) || \"World\"\n res.send({ say: `Hello ${name}! Nice meeting you...` })\n}\n"}'
Ps: if it doesn't exists, it will be created
To delete your function, you can make a DELETE request to /functions/:namespace/:name:
curl -i -X DELETE http://localhost:8100/functions/example/hello-world \
-H 'content-type: application/json'
To execute a function, you can make a PUT request to /functions/:namespace/:name/run:
curl -i -X PUT http://localhost:8100/functions/example/hello-world/run \
-H 'content-type: application/json'
The result will be something like:
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Content-Length: 22
ETag: W/"16-soBGetwJPBLt8CqWpBQu+A"
Date: Tue, 11 Oct 2016 16:51:04 GMT
Connection: keep-alive
{"say":"Hello World!"}
If one needs to pass an object in the request, the payload is executed:
curl -i -X PUT http://localhost:8100/functions/example/hello-world/run \
-H 'content-type: application/json' \
-d '{"name": "Pedro"}'
The result will be something like:
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Content-Length: 22
ETag: W/"16-Ino2/umXaZ3xVEhoqyS8aA"
Date: Tue, 11 Oct 2016 17:13:11 GMT
Connection: keep-alive
{"say":"Hello Pedro!"}
To execute many functions in a pipeline, you can make a PUT request to /functions/pipeline:
// Function0
function main(req, res) {\
res.send({x: req.body.x * 10});
}
// Function1
function main(req, res) {
res.send({x: req.body.x * 20});
}
curl -g -i -X PUT 'http://localhost:8100/functions/pipeline?steps[0]=namespace/function0&steps[1]=namespace/function1' \
-H 'content-type: application/json'
-d '{"x": 1}'
Considering the curl above, the pipeline result would be like this:
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Content-Length: 22
ETag: W/"16-Ino2/umXaZ3xVEhoqyS8aA"
Date: Tue, 11 Oct 2016 17:13:11 GMT
Connection: keep-alive
{"x": 200}
FAQs
Remote serverless code executor
We found that @globocom/backstage-functions demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 11 open source maintainers collaborating on the project.
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