Send groovy script as a file to the Gremlin Server REST API

[Gustavo Mafra]

http://stackoverflow.com/questions/40923202/send-groovy-script-as-a-file-to-the-gremlin-server-rest-api

Here it is explained how I can interact with a Gremlin Server using its REST API. With the following command I execute the rather simple 100-1 script.

curl -X POST -d "{\"gremlin\":\"100-1\"}" "http://localhost:8182"

What I want is to instead of using an inline script, define it in say, script.groovy.

I can make it work for this case defining a variable with the entire script:

GROOVY_LOAD_DATA_SCRIPT=$(<script.groovy)
curl -X POST -d "{\"gremlin\":\"${GROOVY_LOAD_DATA_SCRIPT}\"}" "http://localhost:8182"

But as soon as I start moving beyond one-liners that command breaks:

{
    "message": "body could not be parsed"
}

[Daniel Kuppitz]

You can use Python to turn the file contents into a valid JSON string (doesn't have to be Python, but to me this seems to be the easiest way).

$ cat /tmp/foo

println "Hello " + 'World!'

1+2

$ echo "{\"gremlin\":$(python -c 'import json, sys; print(json.dumps(sys.stdin.read()))' < /tmp/foo)}"

{"gremlin":"println \"Hello \" + 'World!'\n1+2\n"}

Cheers,

Daniel

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[Stephen Mallette]

I'm pretty sure that you can just reference the file in the curl statement itself:

curl -X POST -d @script.groovy "http://localhost:8182"

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[Daniel Kuppitz]

Ha, I wrote this answer, then I thought "well, he probably tried this and it didn't work because the wrapping {"gremlin":...} was needed".

Cheers,

Daniel

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[Stephen Mallette]

yeah - after i answered this here i tried it myself as part of re-answering on SO:

http://stackoverflow.com/a/40932444/1831717

The file will need to valid JSON which doesn't handle line breaks.

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[Gustavo Mafra]

Thanks guys, I kind of solved it by adding semicolons to my script and trimming stuff I didn't want from it with tr:

GROOVY_SCRIPT=$(tr -d "\n\r\t"<query.groovy)

That breaks if there are comments in the script though, and probably for other cases that I don't know.

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