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Shell/Bash script for sending slack messages.
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| #!/usr/bin/env bash | |
| #################################################################################### | |
| # Slack Bash console script for sending messages. | |
| #################################################################################### | |
| # Installation | |
| # $ curl -s https://gist.github.com/andkirby/67a774513215d7ba06384186dd441d9e/raw --output slack.sh | |
| #################################################################################### | |
| # Send message to slack channel/user | |
| # Usage: | |
| # Send a message to channel #ch-01 | |
| # $ bash slack.sh '#ch-01' 'Some message here.' | |
| # | |
| # Send a message to channel #ch-01 and user @me. | |
| # $ bash slack.sh '#ch-01,@me' MESSAGE | |
| # | |
| # Send a message to the default channel (it must be declared in APP_SLACK_CHANNEL). | |
| # $ bash slack.sh MESSAGE | |
| # | |
| # Please declare environment variables: | |
| # - APP_SLACK_WEBHOOK | |
| # - APP_SLACK_CHANNEL (optional) | |
| # - APP_SLACK_USERNAME (optional) | |
| # - APP_SLACK_ICON_EMOJI (optional) | |
| #################################################################################### | |
| set -o pipefail | |
| set -o errexit | |
| set -o nounset | |
| #set -o xtrace | |
| init_params() { | |
| # you may declare ENV vars in /etc/profile.d/slack.sh | |
| if [ -z "${APP_SLACK_WEBHOOK:-}" ]; then | |
| echo 'error: Please configure Slack environment variable: ' > /dev/stderr | |
| echo ' APP_SLACK_WEBHOOK' > /dev/stderr | |
| exit 2 | |
| fi | |
| APP_SLACK_USERNAME=${APP_SLACK_USERNAME:-$(hostname | cut --delimiter=. --fields=1)} | |
| APP_SLACK_ICON_EMOJI=${APP_SLACK_ICON_EMOJI:-:slack:} | |
| if [ -z "${1:-}" ]; then | |
| echo 'error: Missed required arguments.' > /dev/stderr | |
| echo 'note: Please follow this example:' > /dev/stderr | |
| echo ' $ slack.sh "#CHANNEL1,CHANNEL2" Some message here. ' > /dev/stderr | |
| exit 3 | |
| fi | |
| slack_channels=(${APP_SLACK_CHANNEL:-}) | |
| if [ "${1::1}" == '#' ] || [ "${1::1}" == '@' ]; then | |
| # explode by comma | |
| IFS=',' read -r -a slack_channels <<< "${1}" | |
| shift | |
| fi | |
| slack_message=${@} | |
| } | |
| send_message() { | |
| local channel=${1} | |
| echo 'Sending to '${channel}'...' | |
| curl --silent --data-urlencode \ | |
| "$(printf 'payload={"text": "%s", "channel": "%s", "username": "%s", "as_user": "true", "link_names": "true", "icon_emoji": "%s" }' \ | |
| "${slack_message}" \ | |
| "${channel}" \ | |
| "${APP_SLACK_USERNAME}" \ | |
| "${APP_SLACK_ICON_EMOJI}" \ | |
| )" \ | |
| ${APP_SLACK_WEBHOOK} || true | |
| echo | |
| } | |
| send_message_to_channels() { | |
| for channel in "${slack_channels[@]:-}"; do | |
| send_message "${channel}" | |
| done | |
| } | |
| slack() { | |
| # Set magic variables for current file & dir | |
| __dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" | |
| __file="${__dir}/$(basename "${BASH_SOURCE[0]}")" | |
| readonly __dir __file | |
| cd ${__dir} | |
| if [ -f $(cd; pwd)/.slackrc ]; then | |
| . $(cd; pwd)/.slackrc | |
| fi | |
| declare -a slack_channels | |
| init_params ${@} | |
| send_message_to_channels | |
| } | |
| if [ "${BASH_SOURCE[0]:-}" != "${0}" ]; then | |
| export -f slack | |
| else | |
| slack ${@} | |
| exit $? | |
| fi | |
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