sdk_generator.sh - mozsearch

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#!/bin/bash

# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Glean SDK metrics build script.

# More about Glean at https://mozilla.github.io/glean

# This script generates metrics and pings as defined in user-provided files

# and generates Swift code to be included in the final build.

# It uses the `glean_parser`.

# See https://mozilla.github.io/glean_parser/ for details.

# To use it in a Swift project, follow these steps:

# 1. Import the `sdk_generator.sh` script into your project.

# 2. Add your `metrics.yaml` and (optionally) `pings.yaml` and `tags.yaml` to your project.

# 3. Add a new "Run Script" build step and set the command to `bash $PWD/sdk_generator.sh`

# 4. Add your definition files (`metrics.yaml`, `pings.yaml`, `tags.yaml`) as Input Files for the "Run Script" step.

# 5. Run the build.

# 6. Add the files in the `Generated` folder to your project.

# 7. Add the same files from the `Generated` folder as Output Files of the newly created "Run SCript" step.

# 8. Start using the generated metrics.

set -e

GLEAN_PARSER_VERSION=15.0

# CMDNAME is used in the usage text below.

# shellcheck disable=SC2034

CMDNAME=$(basename "$0")

USAGE=$(cat <<'HEREDOC'

$(CMDNAME)

Glean Team <glean-team@mozilla.com>

Glean SDK metrics build script.

More about Glean at https://mozilla.github.io/glean

This script generates metrics and pings as defined in user-provided files

and generates Swift code to be included in the final build.

It uses the `glean_parser`.

See https://mozilla.github.io/glean_parser/ for details.

This script should be executed as a "Run Build Script" phase from Xcode.

USAGE:

    ${CMDNAME} [OPTIONS] [PATH ...]

ARGS:

    <PATH>...  Explicit list of definition files to parse.

               If not specified the plugin will use the \$SCRIPT_INPUT_FILE_{N} environment variables.

OPTIONS:

    -a, --allow-reserved               Allow reserved names.

    -o, --output  <PATH>               Folder to place generated code in. Default: \$SOURCE_ROOT/\$PROJECT/Generated

    -g, --glean-namespace <NAME>       The Glean namespace to use in generated code.

    -m, --markdown <PATH>              Generate markdown documentation in provided directory.

    -b, --build-date <TEXT>            Set a specific build date or disable build date generation with `0`.

        --expire-by-version <INTEGER>  Expire metrics by version, with the provided major version.

    -h, --help                         Display this help message.

HEREDOC

helptext() {

    echo "$USAGE"

declare -a PARAMS=()

ALLOW_RESERVED=""

GLEAN_NAMESPACE=Glean

DOCS_DIRECTORY=""

BUILD_DATE=""

EXPIRE_VERSION=""

declare -a YAML_FILES=()

OUTPUT_DIR="${SOURCE_ROOT}/${PROJECT}/Generated"

while (( "$#" )); do

    case "$1" in

        -a|--allow-reserved)

            ALLOW_RESERVED="--allow-reserved"

            shift

;;

        -o|--output)

            OUTPUT_DIR=$2

            shift 2

;;

        -g|--glean-namespace)

            GLEAN_NAMESPACE=$2

            shift 2

;;

        -m|--markdown)

            DOCS_DIRECTORY=$2

            shift 2

;;

        -b|--build-date)

            BUILD_DATE="--option build_date=$2"

            shift 2

;;

        --expire-by-version)

            EXPIRE_VERSION="--expire-by-version $2"

            shift 2

;;

        -h|--help)

            helptext

            exit 0

;;

        --) # end argument parsing

            shift

            break

;;

        --*=|-*) # unsupported flags

            echo "Error: Unsupported flag $1" >&2

            exit 1

;;

        *) # preserve positional arguments

            PARAMS+=("$1")

            shift

;;

    esac

done

if [ "$ACTION" = "indexbuild" ]; then

  echo "Skipping code generation in 'indexbuild' build. See https://bugzilla.mozilla.org/show_bug.cgi?id=1744504 for more info."

  exit 0

fi

if [ "${#PARAMS[@]}" -gt 0 ]; then

    YAML_FILES=("${PARAMS[@]}")

else

    if [ -z "$SCRIPT_INPUT_FILE_COUNT" ] || [ "$SCRIPT_INPUT_FILE_COUNT" -eq 0 ]; then

        echo "warning: No input files specified."

        exit 0

fi

    for i in $(seq 0 $((SCRIPT_INPUT_FILE_COUNT - 1))); do

        infilevar="SCRIPT_INPUT_FILE_${i}"

        infile="${!infilevar}"

        YAML_FILES+=("${infile}")

    done

fi

if [ -z "$SOURCE_ROOT" ]; then

    echo "Error: No \$SOURCE_ROOT defined."

    echo "Execute this script as a build step in Xcode."

    exit 2

fi

if [ -z "$PROJECT" ]; then

    echo "Error: No \$PROJECT defined."

    echo "Execute this script as a build step in Xcode."

    exit 2

fi

VENVDIR="${SOURCE_ROOT}/.venv"

[ -x "${VENVDIR}/bin/python" ] || python3 -m venv "${VENVDIR}"

# We need at least pip 20.3 for Big Sur support, see https://pip.pypa.io/en/stable/news/#id48

# Latest pip is 21.0.1

"${VENVDIR}"/bin/pip install "pip>=20.3"

"${VENVDIR}"/bin/pip install --upgrade "glean_parser~=$GLEAN_PARSER_VERSION"

# Run the glinter

# Turn its warnings into warnings visible in Xcode (but don't do for the success message)

"${VENVDIR}"/bin/python -m glean_parser \

    glinter \

    $ALLOW_RESERVED \

    "${YAML_FILES[@]}" 2>&1 \

    | sed 's/^\(.\)/warning: \1/'  \

    | sed '/Your metrics are Glean/s/^warning: //'

PARSER_OUTPUT=$("${VENVDIR}"/bin/python -m glean_parser \

    translate \

    -f "swift" \

    -o "${OUTPUT_DIR}" \

    -s "glean_namespace=${GLEAN_NAMESPACE}" \

    $BUILD_DATE \

    $EXPIRE_VERSION \

    $ALLOW_RESERVED \

    "${YAML_FILES[@]}" 2>&1) || { echo "$PARSER_OUTPUT"; echo "error: glean_parser failed. See errors above."; exit 1; }

if [ -n "$DOCS_DIRECTORY" ]; then

    "${VENVDIR}"/bin/python -m glean_parser \

        translate \

        -f "markdown" \

        -o "${DOCS_DIRECTORY}" \

        $ALLOW_RESERVED \

        "${YAML_FILES[@]}"

fi

exit 0