[GitHub] [kafka] cmccabe commented on a change in pull request #10995: MINOR: Hint about "docker system prune" when ducker-ak build fails

[GitBox <gi...@apache.org>]

cmccabe commented on a change in pull request #10995:
URL: https://github.com/apache/kafka/pull/10995#discussion_r666358707



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File path: tests/docker/ducker-ak
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@@ -185,6 +185,12 @@ must_popd() {
     popd &> /dev/null || die "failed to popd"
 }
 
+echo_and_do() {
+    local cmd="${@}"
+    echo "${cmd}"
+    ${cmd}

Review comment:
       Well... I made this new function because the other one was checking the output and exiting if it was nonzero. That didn't allow me to print the error message I wanted. So doing the same thing here would defeat the point :)
   
   If bash shell was a better language, I could add a lambda argument to the existing function and have the lambda return what to print on failure. But shell doesn't really do closures, so it would turn into kind of a mess.




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