52 lines
1.3 KiB
Bash
52 lines
1.3 KiB
Bash
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#! /bin/bash
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set -e
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#################
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# docker_check.sh
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#
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# Checks the most recent state exit code of a Docker container
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#################
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# Docker host will default to a socket
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# To override, export DOCKER_HOST to a new hostname
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DOCKER_HOST="${DOCKER_HOST:=socket}"
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container_name="$1"
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# Curls Docker either using a socket or URL
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function curl_docker {
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local path="$1"
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if [ "$DOCKER_HOST" == "socket" ]; then
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curl --unix-socket /var/run/docker.sock "http://localhost/$path" 2>/dev/null
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else
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curl "http://${DOCKER_HOST}/$path" 2>/dev/null
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fi
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}
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# Returns caintainer ID for a given container name
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function get_container_id {
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local container_name="$1"
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curl_docker 'containers/json?all=1' \
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| jq -r ".[] | {Id, Name: .Names[]} | select(.Name == \"/${container_name}\") | .Id"
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}
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# Returns container JSON
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function inspect_container {
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local container_id=$1
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curl_docker "containers/$container_id/json"
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}
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if [ -z "$container_name" ]; then
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echo "Usage: $0 container_name"
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echo "Will exit with the last status code of continer with provided name"
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exit 1
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fi
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container_id=$(get_container_id $container_name)
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if [ -z "$container_id" ]; then
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echo "ERROR: Could not find container with name: $container_name"
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exit 1
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fi
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exit_code=$(inspect_container "$container_id" | jq -r .State.ExitCode)
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exit "$exit_code"
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