dokku/plugins/builder-dockerfile/internal-functions

#!/usr/bin/env bash
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_CORE_AVAILABLE_PATH/common/property-functions"
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x

cmd-builder-dockerfile-report() {
  declare desc="displays a builder-dockerfile report for one or more apps"
  declare cmd="builder-dockerfile:report"
  [[ "$1" == "$cmd" ]] && shift 1
  declare APP="$1" INFO_FLAG="$2"

  if [[ -n "$APP" ]] && [[ "$APP" == --* ]]; then
    INFO_FLAG="$APP"
    APP=""
  fi

  if [[ -z "$APP" ]] && [[ -z "$INFO_FLAG" ]]; then
    INFO_FLAG="true"
  fi

  if [[ -z "$APP" ]]; then
    for app in $(dokku_apps); do
      cmd-builder-dockerfile-report-single "$app" "$INFO_FLAG" | tee || true
    done
  else
    cmd-builder-dockerfile-report-single "$APP" "$INFO_FLAG"
  fi
}

cmd-builder-dockerfile-report-single() {
  declare APP="$1" INFO_FLAG="$2"
  if [[ "$INFO_FLAG" == "true" ]]; then
    INFO_FLAG=""
  fi
  verify_app_name "$APP"
  local flag_map=(
    "--builder-dockerfile-computed-dockerfile-path: $(fn-builder-dockerfile-computed-dockerfile-path "$APP")"
    "--builder-dockerfile-global-dockerfile-path: $(fn-builder-dockerfile-global-dockerfile-path "$APP")"
    "--builder-dockerfile-dockerfile-path: $(fn-builder-dockerfile-dockerfile-path "$APP")"
  )

  if [[ -z "$INFO_FLAG" ]]; then
    dokku_log_info2_quiet "${APP} builder-dockerfile information"
    for flag in "${flag_map[@]}"; do
      key="$(echo "${flag#--}" | cut -f1 -d' ' | tr - ' ')"
      dokku_log_verbose "$(printf "%-30s %-25s" "${key^}" "${flag#*: }")"
    done
  else
    local match=false
    local value_exists=false
    for flag in "${flag_map[@]}"; do
      valid_flags="${valid_flags} $(echo "$flag" | cut -d':' -f1)"
      if [[ "$flag" == "${INFO_FLAG}:"* ]]; then
        value=${flag#*: }
        size="${#value}"
        if [[ "$size" -ne 0 ]]; then
          echo "$value" && match=true && value_exists=true
        else
          match=true
        fi
      fi
    done
    [[ "$match" == "true" ]] || dokku_log_fail "Invalid flag passed, valid flags:${valid_flags}"
    [[ "$value_exists" == "true" ]] || dokku_log_fail "not deployed"
  fi
}

fn-builder-dockerfile-computed-dockerfile-path() {
  declare APP="$1"

  file="$(fn-builder-dockerfile-dockerfile-path "$APP")"
  if [[ "$file" == "" ]]; then
    file="$(fn-builder-dockerfile-global-dockerfile-path "$APP")"
  fi

  echo "$file"
}

fn-builder-dockerfile-global-dockerfile-path() {
  declare APP="$1"

  fn-plugin-property-get-default "builder-dockerfile" "--global" "dockerfile-path" "Dockerfile"
}

fn-builder-dockerfile-dockerfile-path() {
  declare APP="$1"

  fn-plugin-property-get-default "builder-dockerfile" "$APP" "dockerfile-path" ""
}

fn-builder-dockerfile-get-ports-from-dockerfile() {
  declare desc="return all exposed ports from passed file path"
  declare DOCKERFILE_PATH="$1"

  suppress_output dos2unix "$DOCKERFILE_PATH"
  local ports="$(grep -E "^EXPOSE " "$DOCKERFILE_PATH" | awk '{ print $2 }' | xargs)" || true
  echo "$ports"
}

fn-builder-dockerfile-get-ports-from-image() {
  declare desc="return all exposed ports from passed image name"
  declare IMAGE="$1"

  # shellcheck disable=SC2016
  local ports="$("$DOCKER_BIN" image inspect --format '{{range $key, $value := .Config.ExposedPorts}}{{$key}} {{end}}' "$IMAGE" | xargs)" || true
  echo "$ports"
}

fn-builder-dockerfile-get-detect-port-map() {
  declare desc="extracts and echos a port mapping from the app"
  declare APP="$1" IMAGE="$2" DOCKERFILE_PATH="$3"

  local detected_ports=$(fn-builder-dockerfile-get-ports-from-dockerfile "$DOCKERFILE_PATH")

  if [[ -z "$detected_ports" ]]; then
    local detected_ports=$(fn-builder-dockerfile-get-ports-from-image "$IMAGE")
  fi

  if [[ -n "$detected_ports" ]]; then
    local port_map=""
    for p in $detected_ports; do
      if [[ "$p" =~ .*udp.* ]]; then
        p=${p//\/udp/}
        port_map+="udp:$p:$p "
      else
        scheme="http"
        p=${p//\/tcp/}
        if [[ "$p" == "443" ]]; then
          scheme="https"
        fi
        port_map+="$scheme:$p:$p "
      fi
    done
    echo "$port_map" | xargs
  else
    # ensure we have a port mapping
    plugn trigger ports-configure "$APP"
    echo "http:$(plugn trigger ports-get-property "$APP" proxy-port):5000"
  fi
}