Passing json to aws glue create-job after replacement done using jq - bash

Question

I have the following bash script that I execute in order to create new Glue Job via CLI:
#!/usr/bin/env bash
set -e
NAME=$1
PROFILE=$2
SCRIPT_LOCATION='s3://bucket/scripts/'$1'.py'
echo [*]--- Creating new job on AWS
aws glue create-job --profile $PROFILE --name $NAME --cli-input-json | jq '.Command.ScriptLocation = '\"$SCRIPT_LOCATION\"'' ./resources/config.json
I'm using jq as i need one of the values to be replaced on runtime before i pass the .json as --cli-input-json argument. How can i pass json with replaced value to this command? As of now, it prints out the json content (although with value already replaced).
Running the command above causes the following error:
[*]--- Creating new job on AWS
{
"Description": "Template for Glue Job",
"LogUri": "",
"Role": "arn:aws:iam::11111111111:role/role",
"ExecutionProperty": {
"MaxConcurrentRuns": 1
},
"Command": {
"Name": "glueetl",
"ScriptLocation": "s3://bucket/scripts/script.py",
"PythonVersion": "3"
},
"DefaultArguments": {
"--TempDir": "s3://temp/admin/",
"--job-bookmark-option": "job-bookmark-disable",
"--enable-metrics": "",
"--enable-glue-datacatalog": "",
"--enable-continuous-cloudwatch-log": "",
"--enable-spark-ui": "true",
"--spark-event-logs-path": "s3://assets/sparkHistoryLogs/"
},
"NonOverridableArguments": {
"KeyName": ""
},
"MaxRetries": 0,
"AllocatedCapacity": 0,
"Timeout": 2880,
"MaxCapacity": 0,
"Tags": {
"KeyName": ""
},
"NotificationProperty": {
"NotifyDelayAfter": 60
},
"GlueVersion": "3.0",
"NumberOfWorkers": 2,
"WorkerType": "G.1X"
}
usage: aws [options] <command> <subcommand> [<subcommand> ...] [parameters]
To see help text, you can run:
aws help
aws <command> help
aws <command> <subcommand> help
aws.exe: error: argument --cli-input-json: expected one argument

Answer 1

The command line
aws glue create-job --profile $PROFILE --name $NAME --cli-input-json | jq '.Command.ScriptLocation = '\"$SCRIPT_LOCATION\"'' ./resources/config.json
executes the command
aws glue create-job --profile $PROFILE --name $NAME --cli-input-json,
takes its standard output and uses it as input to
jq '.Command.ScriptLocation = '\"$SCRIPT_LOCATION\"'' ./resources/config.json
(which will ignore the input and read from the file given as argument). Please also note that blanks or spaces in $SCRIPT_LOCATION will break your script, because it is not quoted (your quotes are off).
To use the output of one command in the argument list of another command, you must use Command Substitution: outer_command --some-arg "$(inner_command)".
So your command should become:
aws glue create-job --profile $PROFILE --name $NAME --cli-input-json "$(jq '.Command.ScriptLocation = "'"$SCRIPT_LOCATION"'"' ./resources/config.json)"
# or simplified with only double quotes:
aws glue create-job --profile $PROFILE --name $NAME --cli-input-json "$(jq ".Command.ScriptLocation = \"$SCRIPT_LOCATION\"" ./resources/config.json)"
See https://superuser.com/questions/1306071/aws-cli-using-cli-input-json-in-a-pipeline for additional examples.
Although, I have to admit I am not 100% certain that the JSON content can be passed directly on the command line. From looking at the docs and some official examples, it looks like this parameter expects a file name, not a JSON document's content. So it could be possible that your command in fact needs to be:
# if "-" filename is specially handled:
jq ".Command.ScriptLocation = \"$SCRIPT_LOCATION\"" ./resources/config.json | aws glue create-job --profile $PROFILE --name $NAME --cli-input-json -
# "-" filename not recognized:
jq ".Command.ScriptLocation = \"$SCRIPT_LOCATION\"" ./resources/config.json > ./resources/config.replaced.json && aws glue create-job --profile $PROFILE --name $NAME --cli-input-json file://./resources/config.replaced.json
Let us know which one worked.