grep a pattern based on the condtion in output of a command using shell scripts

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Linux

I want to store the pattern from the output of a command based on a condition using shell scripts

Camp=ABCD,App=Service
       state=COMMIT
Camp=XYZ,App=Service
       state=COMMIT>

I want to write a shell script which gives me value ABCD and XYZ in a variable , if state is equal to COMMIT.

I started writing, as I am new to shell programming
i am struck in giving the condition to store the date ABCD and XYZ in a variable