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Note, not all `alexellis/github` references should be changed, there are a number of repos which are not part of the openfaas org, this commit excludes those. Signed-off-by: John McCabe <john@johnmccabe.net>
40 lines
1.2 KiB
Markdown
40 lines
1.2 KiB
Markdown
## functions/resizer
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Use this FaaS function to resize an image with ImageMagick.
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**Deploy the resizer function**
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(Make sure you have already deployed FaaS with ./deploy_stack.sh in the root of this Github repository.
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* Option 1 - click *Create a new function* on the FaaS UI
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* Option 2 - use the [faas-cli](https://github.com/openfaas/faas-cli/) (experimental)
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```
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# curl -sSL https://get.openfaas.com | sudo sh
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# faas-cli -action=deploy -image=functions/resizer -name=resizer \
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-fprocess="convert - -resize 50% fd:1"
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200 OK
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URL: http://localhost:8080/function/resizer
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```
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**Resize a picture by 50%**
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Now pick an image such as the included picture of Gordon and use `curl` or a tool of your choice to send the data to the function. Pipe the result into a new file like this:
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```
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$ curl localhost:8080/function/resizer --data-binary @gordon.png > small_gordon.png
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```
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**Customize the transformation**
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If you want to customise the transformation then edit the Dockerfile or the fprocess variable and create a new function.
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**Remove the function**
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You can remove the function with `docker service rm resizer`.
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