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Add function to print error messages to stderr

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This commit is contained in:
Juan Carlos Mejías Rodríguez 2018-11-25 13:15:25 -05:00
parent 14039d9fe4
commit c82b81b313
1 changed files with 21 additions and 11 deletions
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32
psu
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@ -1,5 +1,15 @@
#!/usr/bin/env bash #!/usr/bin/env bash
############################
# Print an error to stderr #
# Arguments: #
# $1 Error message #
############################
err() {
local error_message=$@
echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')]: $error_message" >&2
}
####################################### #######################################
# Check a parameter has been provided # # Check a parameter has been provided #
# Arguments: # # Arguments: #
@ -14,8 +24,8 @@ check_argument () {
local argument_envvar=$3 local argument_envvar=$3
local argument_flag=$4 local argument_flag=$4
if [ -z "$argument_value" ]; then if [ -z "$argument_value" ]; then
>&2 echo "Error: Missing argument \"$argument_name\"." err "Error: Missing argument \"$argument_name\"."
>&2 echo "Try setting \"$argument_envvar\" environment variable or using the \"-$argument_flag\" flag." err "Try setting \"$argument_envvar\" environment variable or using the \"-$argument_flag\" flag."
exit 1 exit 1
fi fi
} }
@ -31,12 +41,12 @@ check_for_errors () {
local response=$2 local response=$2
if [ $exit_code -ne 0 ]; then if [ $exit_code -ne 0 ]; then
case $exit_code in case $exit_code in
2) >&2 echo 'Request timed out!' ;; 2) err 'Request timed out!' ;;
3) >&2 echo 'Unexpected HTTP 3xx Redirection!' ;; 3) err 'Unexpected HTTP 3xx Redirection!' ;;
4) >&2 echo 'HTTP 4xx Client Error!' && echo $response ;; 4) err 'HTTP 4xx Client Error!' && err $response ;;
5) >&2 echo 'HTTP 5xx Server Error!' && echo $response ;; 5) err 'HTTP 5xx Server Error!' && err $response ;;
6) >&2 echo 'Exceeded --max-redirects=<n> redirects!' ;; 6) err 'Exceeded --max-redirects=<n> redirects!' ;;
*) >&2 echo 'Unholy Error!' ;; *) err 'Unholy Error!' ;;
esac esac
exit 1 exit 1
fi fi
@ -155,7 +165,7 @@ deploy () {
rm json.tmp rm json.tmp
else else
if [ $STRICT_MODE == "true" ]; then if [ $STRICT_MODE == "true" ]; then
>&2 echo "Error: Stack $PORTAINER_STACK_NAME already exists." err "Error: Stack $PORTAINER_STACK_NAME already exists."
exit 1 exit 1
fi fi
echo_verbose "Stack $PORTAINER_STACK_NAME exists." echo_verbose "Stack $PORTAINER_STACK_NAME exists."
@ -192,7 +202,7 @@ deploy () {
undeploy () { undeploy () {
if [ -z "$STACK" ]; then if [ -z "$STACK" ]; then
if [ $STRICT_MODE == "true" ]; then if [ $STRICT_MODE == "true" ]; then
>&2 echo "Error: Stack $PORTAINER_STACK_NAME does not exist." err "Error: Stack $PORTAINER_STACK_NAME does not exist."
exit 1 exit 1
else else
echo_verbose "Stack $PORTAINER_STACK_NAME does not exist. No need to undeploy it." echo_verbose "Stack $PORTAINER_STACK_NAME does not exist. No need to undeploy it."
@ -309,5 +319,5 @@ if [ $ACTION == "undeploy" ]; then
exit 0 exit 0
fi fi
>&2 echo "Error: Unknown action \"$ACTION\"." err "Error: Unknown action \"$ACTION\"."
exit 1 exit 1