Initial commit: Dokku Docker Compose plugin with test infrastructure
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@@ -122,26 +122,26 @@ save_config() {
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chmod 600 "$PLUGIN_CONFIG_FILE"
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}
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# Show help message
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# Show help
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show_help() {
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cat <<EOF
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Usage: dokku docker-compose:COMMAND [options]
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Usage: dokku docker-compose:COMMAND [OPTIONS] [ARGS]...
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Manage Docker Compose deployments in Dokku.
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Manage Docker Compose deployments in Dokku
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Commands:
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import [path] Import a docker-compose.yml file
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help Show this help message
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version Show version information
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plugin:install Install the plugin
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plugin:uninstall Uninstall the plugin
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help, --help, -h Show this help message
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version, --version Show version information
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import Import a Docker Compose file
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plugin:install Install the plugin
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plugin:uninstall Uninstall the plugin
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Options:
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-f, --file FILE Specify an alternate compose file (default: docker-compose.yml)
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-p, --project NAME Specify an alternate project name (default: directory name)
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--dry-run Show what would be created without making changes
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-v, --verbose Increase verbosity
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-q, --quiet Suppress output
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Import Options:
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-f, --file FILE Specify an alternate compose file (default: docker-compose.yml)
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-p, --project NAME Specify an alternate project name (default: directory name)
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--dry-run Show what would be done without making any changes
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-v, --verbose Show more detailed output
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-q, --quiet Suppress output
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Examples:
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# Import default docker-compose.yml in current directory
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303
functions/parser
Normal file
303
functions/parser
Normal file
@@ -0,0 +1,303 @@
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#!/usr/bin/env bash
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# Docker Compose parser functions
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# Check if yq is installed
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check_yq() {
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if ! command -v yq &> /dev/null; then
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log_fail "yq is required but not installed. Please install yq (https://github.com/mikefarah/yq) and try again."
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fi
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}
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# Validate Docker Compose file
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validate_compose_file() {
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local file="${1:?file must be provided}"
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if [[ ! -f "$file" ]]; then
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log_fail "Compose file not found: $file"
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fi
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if ! yq eval 'true' "$file" &> /dev/null; then
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log_fail "Invalid YAML in compose file: $file"
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fi
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local version
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version=$(yq eval '.version // ""' "$file")
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if [[ -z "$version" ]]; then
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log_warn "No version specified in compose file, assuming version 3"
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version="3"
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fi
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# Check if version is supported
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if [[ ! "$version" =~ ^[23](\.\d+)?$ ]]; then
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log_fail "Unsupported Compose file version: $version. Only versions 2.x and 3.x are supported."
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fi
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log_debug "Validated Compose file $file (version $version)"
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echo "$version"
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}
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# Get all services from compose file
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get_services() {
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local file="${1:?file must be provided}"
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yq eval '.services | keys | .[]' "$file"
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}
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# Get service configuration
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get_service_config() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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yq eval ".services.$service" "$file"
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}
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# Get service image
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get_service_image() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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yq eval ".services.$service.image" "$file"
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}
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# Get service ports
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get_service_ports() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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yq eval ".services.$service.ports[]?" "$file" 2>/dev/null || true
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}
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# Get service environment variables
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get_service_environment() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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# Handle both array and map formats for environment
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if yq eval ".services.$service.environment | type" "$file" 2>/dev/null | grep -q '!!map'; then
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# Map format (KEY: VALUE)
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yq eval ".services.$service.environment | to_entries | .[] | \"\(.key)=\(.value | tostring)\"" "$file"
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else
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# Array format (KEY=VALUE)
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yq eval ".services.$service.environment[]?" "$file" 2>/dev/null || true
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fi
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}
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# Get service volumes
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get_service_volumes() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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yq eval ".services.$service.volumes[]?" "$file" 2>/dev/null || true
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}
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# Get service networks
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get_service_networks() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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yq eval ".services.$service.networks[]?" "$file" 2>/dev/null || true
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}
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# Get service depends_on
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get_service_depends_on() {
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local file="${1:?file must be provided}"
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local service="${2:?service must be provided}"
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# Handle both array and map formats for depends_on
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if yq eval ".services.$service.depends_on | type" "$file" 2>/dev/null | grep -q '!!map'; then
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# Map format (service: condition)
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yq eval ".services.$service.depends_on | keys | .[]" "$file" 2>/dev/null || true
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else
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# Array format (service names)
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yq eval ".services.$service.depends_on[]?" "$file" 2>/dev/null || true
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fi
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}
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# Get all networks from compose file
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get_networks() {
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local file="${1:?file must be provided}"
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yq eval '.networks | keys | .[]' "$file" 2>/dev/null || true
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}
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# Get network configuration
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get_network_config() {
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local file="${1:?file must be provided}"
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local network="${2:?network must be provided}"
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yq eval ".networks.$network" "$file"
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}
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# Get all volumes from compose file
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get_volumes() {
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local file="${1:?file must be provided}"
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yq eval '.volumes | keys | .[]' "$file" 2>/dev/null || true
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}
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# Get volume configuration
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get_volume_config() {
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local file="${1:?file must be provided}"
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local volume="${2:?volume must be provided}"
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yq eval ".volumes.$volume" "$file"
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}
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# Parse a volume string into its components
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# Format: [host:]container[:mode]
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parse_volume() {
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local volume="${1:?volume must be provided}"
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if [[ "$volume" == *:*:* ]]; then
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# Format: host:container:mode
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IFS=':' read -r host_path container_path mode <<< "$volume"
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elif [[ "$volume" == *:* ]]; then
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# Format: host:container
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IFS=':' read -r host_path container_path <<< "$volume"
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mode="rw"
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else
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# Format: container
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container_path="$volume"
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host_path=""
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mode="rw"
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fi
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# Remove any quotes that might be present
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host_path=${host_path//\"/}
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container_path=${container_path//\"/}
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mode=${mode//\"/}
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echo "$host_path"
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echo "$container_path"
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echo "$mode"
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}
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# Build a dependency graph for services
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build_dependency_graph() {
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local file="${1:?file must be provided}"
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declare -A deps
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while IFS= read -r service; do
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local service_deps=()
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while IFS= read -r dep; do
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service_deps+=("$dep")
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done < <(get_service_depends_on "$file" "$service")
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if [[ ${#service_deps[@]} -gt 0 ]]; then
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deps["$service"]="${service_deps[*]}"
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fi
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done < <(get_services "$file")
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declare -p deps
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}
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# Get a topological sort of services based on dependencies
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get_sorted_services() {
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local file="${1:?file must be provided}"
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# Use tsort to get a topological sort
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declare -A visited
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declare -a sorted
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while IFS= read -r service; do
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if [[ -z "${visited[$service]}" ]]; then
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_visit "$service" "$file"
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fi
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done < <(get_services "$file")
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# Reverse the order to get dependencies first
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for ((i=${#sorted[@]}-1; i>=0; i--)); do
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echo "${sorted[$i]}"
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done
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}
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# Helper function for topological sort
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_visit() {
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local service="$1"
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local file="$2"
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if [[ "${visited[$service]}" == "visiting" ]]; then
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log_fail "Circular dependency detected involving service: $service"
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fi
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if [[ -z "${visited[$service]}" ]]; then
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visited["$service"]="visiting"
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# Visit all dependencies
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while IFS= read -r dep; do
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_visit "$dep" "$file"
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done < <(get_service_depends_on "$file" "$service")
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visited["$service"]="visited"
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sorted+=("$service")
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fi
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}
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# Get the Dokku app name for a service
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get_dokku_app_name() {
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local service="${1:?service must be provided}"
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local prefix="${2:-}"
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local suffix="${3:-}"
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# Convert service name to valid Dokku app name
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# - Convert to lowercase
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# - Replace underscores and dots with hyphens
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# - Remove any invalid characters
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local app_name=$(echo "$service" | tr '[:upper:]' '[:lower:]' | tr '_.' '-' | tr -cd '[:alnum:]-')
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# Apply prefix and suffix if provided
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echo "${prefix}${app_name}${suffix}"
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}
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# Check if a service should be managed by a Dokku plugin
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should_use_dokku_plugin() {
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local image="${1:?image must be provided}"
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# List of known database and service images that have Dokku plugins
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local plugin_images=(
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"postgres"
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"mysql"
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"mariadb"
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"redis"
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"memcached"
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"mongodb"
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"couchdb"
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"rabbitmq"
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"elasticsearch"
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"kibana"
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"influxdb"
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"cassandra"
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"rethinkdb"
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"neo4j"
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)
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for plugin_image in "${plugin_images[@]}"; do
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if [[ "$image" == *"$plugin_image"* ]]; then
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echo "$plugin_image"
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return 0
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fi
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done
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return 1
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}
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# Get the Dokku plugin command for a service
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get_dokku_plugin_command() {
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local plugin="${1:?plugin must be provided}"
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case "$plugin" in
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postgres) echo "postgres:create" ;;
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mysql) echo "mysql:create" ;;
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mariadb) echo "mariadb:create" ;;
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redis) echo "redis:create" ;;
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memcached) echo "memcached:create" ;;
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mongodb) echo "mongodb:create" ;;
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couchdb) echo "couchdb:create" ;;
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rabbitmq) echo "rabbitmq:create" ;;
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elasticsearch) echo "elasticsearch:create" ;;
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kibana) echo "kibana:create" ;;
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influxdb) echo "influxdb:create" ;;
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cassandra) echo "cassandra:create" ;;
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rethinkdb) echo "rethinkdb:create" ;;
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neo4j) echo "neo4j:create" ;;
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*) echo "" ;;
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esac
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}
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