Build for ElectronJS

Fixes #2032

native_client/javascript/Makefile

@@ -36,13 +36,13 @@ configure: deepspeech_wrap.cxx package.json
 	$(NODE_BUILD_TOOL) configure $(NODE_BUILD_VERBOSE)
 
 build: configure deepspeech_wrap.cxx
-	AS=$(AS) CC=$(CC) CXX=$(CXX) LD=$(LD) CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" LDFLAGS="$(RPATH_NODEJS) $(LDFLAGS)" LIBS=$(LIBS) $(NODE_BUILD_TOOL) $(NODE_PLATFORM_TARGET) $(NODE_ABI_TARGET) rebuild $(NODE_BUILD_VERBOSE)
+	AS=$(AS) CC=$(CC) CXX=$(CXX) LD=$(LD) CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" LDFLAGS="$(RPATH_NODEJS) $(LDFLAGS)" LIBS=$(LIBS) $(NODE_BUILD_TOOL) $(NODE_PLATFORM_TARGET) $(NODE_RUNTIME) $(NODE_ABI_TARGET) $(NODE_DIST_URL) rebuild $(NODE_BUILD_VERBOSE)
 
 copy-deps: build
 	$(call copy_missing_libs,lib/binding/*/*/*/deepspeech.node,lib/binding/*/*/)
 
 node-wrapper: copy-deps build
-	$(NODE_BUILD_TOOL) $(NODE_PLATFORM_TARGET) $(NODE_ABI_TARGET) package $(NODE_BUILD_VERBOSE)
+	$(NODE_BUILD_TOOL) $(NODE_PLATFORM_TARGET) $(NODE_RUNTIME) $(NODE_ABI_TARGET) $(NODE_DIST_URL) package $(NODE_BUILD_VERBOSE)
 
 npm-pack: clean package.json README.md index.js
 	npm install node-pre-gyp@0.12.x

native_client/javascript/client.js

@@ -40,6 +40,11 @@ util.inherits(VersionAction, argparse.Action);
 
 VersionAction.prototype.call = function(parser) {
   Ds.printVersions();
+  let runtime = 'Node';
+  if (process.versions.electron) {
+    runtime = 'Electron';
+  }
+  console.error('Runtime: ' + runtime);
   process.exit(0);
 }
 
@@ -115,4 +120,8 @@ audioStream.on('finish', () => {
   console.log(model.stt(audioBuffer.slice(0, audioBuffer.length / 2), 16000));
   const inference_stop = process.hrtime(inference_start);
   console.error('Inference took %ds for %ds audio file.', totalTime(inference_stop), audioLength.toPrecision(4));
+
+  console.error('process.versions.electron=' + process.versions.electron);
+
+  process.exit(0);
 });

taskcluster/test-electronjs_v4.1-linux-amd64-opt.yml

@@ -0,0 +1,14 @@
+build:
+  template_file: test-linux-opt-base.tyml
+  docker_image: "ubuntu:16.04"
+  dependencies:
+    - "node-package-cpu"
+    - "test-training_upstream-linux-amd64-py27mu-opt"
+  system_setup:
+    >
+      ${nodejs.packages_xenial.prep_10} && ${nodejs.packages_xenial.apt_pinning} && apt-get -qq update && apt-get -qq -y install ${nodejs.packages_xenial.apt}
+  args:
+    tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/tc-electron-tests.sh 10.x 4.1.1"
+  metadata:
+    name: "DeepSpeech Linux AMD64 CPU ElectronJS v4.1 tests"
+    description: "Testing DeepSpeech for Linux/AMD64 on ElectronJS v4.1, CPU only, optimized version"

tc-electron-tests.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+set -xe
+
+source $(dirname "$0")/tc-tests-utils.sh
+
+nodever=$1
+electronver=$2
+
+if [ -z "${nodever}" ]; then
+    echo "No node version given, aborting."
+    exit 1
+fi;
+
+if [ -z "${elecronver}" ]; then
+    echo "No electron version given, aborting."
+    exit 1
+fi;
+
+download_data
+
+node --version
+npm --version
+
+NODE_ROOT="${DS_ROOT_TASK}/ds-test/"
+export NODE_PATH="${NODE_ROOT}/node_modules/"
+export PATH="${NODE_ROOT}:${NODE_PATH}/.bin/:$PATH"
+
+npm install --prefix ${NODE_ROOT} electron@${electronver}
+
+npm install --prefix ${NODE_ROOT} ${DEEPSPEECH_NODEJS}/deepspeech-${DS_VERSION}.tgz
+
+alias deepspeech="${NODE_ROOT}/node_modules/electron/dist/electron ${NODE_ROOT}/node_modules/deepspeech/client.js"
+
+check_runtime_electronjs
+
+run_all_inference_tests

tc-node-tests-prod.sh

@@ -25,4 +25,6 @@ npm install ${DEEPSPEECH_NODEJS}/deepspeech-${DS_VERSION}.tgz
 
 export PATH=$HOME/node_modules/.bin/:$PATH
 
+check_runtime_nodejs
+
 run_prod_inference_tests

tc-node-tests.sh

@@ -22,4 +22,6 @@ export PATH="${NODE_ROOT}:${NODE_PATH}/.bin/:$PATH"
 
 npm install --prefix ${NODE_ROOT} ${DEEPSPEECH_NODEJS}/deepspeech-${DS_VERSION}.tgz
 
+check_runtime_nodejs
+
 run_all_inference_tests

tc-tests-utils.sh

@@ -57,6 +57,7 @@ model_source_mmap="$(dirname "${model_source}")/${model_name_mmap}"
 
 SUPPORTED_PYTHON_VERSIONS=${SUPPORTED_PYTHON_VERSIONS:-2.7.15:ucs2 2.7.15:ucs4 3.4.9:ucs4 3.5.6:ucs4 3.6.7:ucs4 3.7.1:ucs4}
 SUPPORTED_NODEJS_VERSIONS=${SUPPORTED_NODEJS_VERSIONS:-4.9.1 5.12.0 6.14.4 7.10.1 8.12.0 9.11.2 10.12.0 11.0.0}
+SUPPORTED_ELECTRONJS_VERSIONS=${SUPPORTED_ELECTRONJS_VERSIONS:-1.6.18 1.7.16 1.8.8 2.0.18 3.0.16 3.1.8 4.0.3 4.1.4}
 
 strip() {
   echo "$(echo $1 | sed -e 's/^[[:space:]]+//' -e 's/[[:space:]]+$//')"
@@ -284,6 +285,27 @@ check_tensorflow_version()
   assert_deepspeech_version "${ds_help}"
 }
 
+assert_deepspeech_runtime()
+{
+  local expected_runtime=$1
+
+  set +e
+  local ds_version=$(${DS_BINARY_PREFIX}deepspeech --version 2>&1 1>/dev/null)
+  set -e
+
+  assert_shows_something "${ds_version}" "${expected_runtime}"
+}
+
+check_runtime_nodejs()
+{
+  assert_deepspeech_runtime "Runtime: Node"
+}
+
+check_runtime_electronjs()
+{
+  assert_deepspeech_runtime "Runtime: Electron"
+}
+
 run_tflite_basic_inference_tests()
 {
   set +e
@@ -1110,6 +1132,17 @@ do_deepspeech_nodejs_build()
       clean node-wrapper
   done;
 
+  for electron in ${SUPPORTED_ELECTRONJS_VERSIONS}; do
+    EXTRA_CFLAGS="${EXTRA_LOCAL_CFLAGS}" EXTRA_LDFLAGS="${EXTRA_LOCAL_LDFLAGS}" EXTRA_LIBS="${EXTRA_LOCAL_LIBS}" make -C native_client/javascript \
+      TARGET=${SYSTEM_TARGET} \
+      RASPBIAN=${SYSTEM_RASPBIAN} \
+      TFDIR=${DS_TFDIR} \
+      NODE_ABI_TARGET=--target=$electron \
+      NODE_DIST_URL=--disturl=https://atom.io/download/electron \
+      NODE_RUNTIME=--runtime=electron \
+      clean node-wrapper
+  done;
+
   if [ "${rename_to_gpu}" ]; then
     make -C native_client/javascript clean npm-pack PROJECT_NAME=deepspeech-gpu
   else