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https://github.com/angular/angular.git
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Paul Gschwendtner
fed76306d9
Improves stability of the Windows Bazel CI job by installing Bazelisk globally. Also makes the environment helpers more convenient by evaluating the variable assignments directly, simplifying some Bash logic. PR Close #45431
77 lines
2.7 KiB
Bash
77 lines
2.7 KiB
Bash
####################################################################################################
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# Helpers for defining environment variables for CircleCI.
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#
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# In CircleCI, each step runs in a new shell. The way to share ENV variables across steps is to
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# export them from `$BASH_ENV`, which is automatically sourced at the beginning of every step (for
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# the default `bash` shell).
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#
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# See also https://circleci.com/docs/2.0/env-vars/#using-bash_env-to-set-environment-variables.
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####################################################################################################
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# Set and print an environment variable.
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#
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# Use this function for setting environment variables that are public, i.e. it is OK for them to be
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# visible to anyone through the CI logs.
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#
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# Usage: `setPublicVar <name> <value>`
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function setPublicVar() {
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setSecretVar $1 "$2";
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echo "$1=$2";
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}
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# Set (without printing) an environment variable.
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#
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# Use this function for setting environment variables that are secret, i.e. should not be visible to
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# everyone through the CI logs.
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#
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# Usage: `setSecretVar <name> <value>`
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function setSecretVar() {
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# WARNING: Secrets (e.g. passwords, access tokens) should NOT be printed.
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# (Keep original shell options to restore at the end.)
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local -r originalShellOptions=$(set +o);
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set +x -eu -o pipefail;
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local assignmentStatement="export $1=\"${2:-}\";"
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echo "${assignmentStatement}" >> $BASH_ENV;
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eval "${assignmentStatement}"
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# Restore original shell options.
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eval "$originalShellOptions";
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}
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# Create a function to set an environment variable, when called.
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#
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# Use this function for creating setter for public environment variables that require expensive or
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# time-consuming computaions and may not be needed. When needed, you can call this function to set
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# the environment variable (which will be available through `$BASH_ENV` from that point onwards).
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#
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# Arguments:
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# - `<name>`: The name of the environment variable. The generated setter function will be
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# `setPublicVar_<name>`.
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# - `<code>`: The code to run to compute the value for the variable. Since this code should be
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# executed lazily, it must be properly escaped. For example:
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# ```sh
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# # DO NOT do this:
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# createPublicVarSetter MY_VAR "$(whoami)"; # `whoami` will be evaluated eagerly
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#
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# # DO this isntead:
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# createPublicVarSetter MY_VAR "\$(whoami)"; # `whoami` will NOT be evaluated eagerly
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# ```
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#
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# Usage: `createPublicVarSetter <name> <code>`
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#
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# Example:
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# ```sh
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# createPublicVarSetter MY_VAR 'echo "FOO"';
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# echo $MY_VAR; # Not defined
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#
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# setPublicVar_MY_VAR;
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# source $BASH_ENV;
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# echo $MY_VAR; # FOO
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# ```
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function createPublicVarSetter() {
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echo "setPublicVar_$1() { setPublicVar $1 \"$2\"; }" >> $BASH_ENV;
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}
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