Add script to build docker image. (#77)

* Add script to build docker image.

* Add start_envoy for docker image.

WORKSPACE

@@ -69,3 +69,19 @@ load(
 )
 
 envoy_repositories()
+
+new_http_archive(
+    name = "docker_ubuntu",
+    build_file_content = """
+load("@bazel_tools//tools/build_defs/docker:docker.bzl", "docker_build")
+docker_build(
+  name = "xenial",
+  tars = ["xenial/ubuntu-xenial-core-cloudimg-amd64-root.tar.gz"],
+  visibility = ["//visibility:public"],
+)
+""",
+    sha256 = "de31e6fcb843068965de5945c11a6f86399be5e4208c7299fb7311634fb41943",
+    strip_prefix = "docker-brew-ubuntu-core-e406914e5f648003dfe8329b512c30c9ad0d2f9c",
+    type = "zip",
+    url = "https://codeload.github.com/tianon/docker-brew-ubuntu-core/zip/e406914e5f648003dfe8329b512c30c9ad0d2f9c",
+)

script/release-docker

@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+#
+set -ex
+
+# This docker image can be used as:
+#
+# docker run IMAGE -a backend_address -p PORT -m MIXER_SERVER
+#
+
+PROJECT=istio-testing
+IMAGE_PREFIX="gcr.io/${PROJECT}/proxy"
+
+DATE_PART=$(date +"%Y%m%d")
+SHA_PART=$(git show -q HEAD --pretty=format:%h)
+DOCKER_TAG="${DATE_PART}${SHA_PART}"
+
+IMAGE_NAME="${IMAGE_PREFIX}:${DOCKER_TAG}"
+
+gcloud docker --authorize-only
+
+bazel run --config=release //src/envoy/mixer:proxy "${IMAGE_NAME}"
+
+gcloud docker -- push "${IMAGE_NAME}"
+
+IMAGE_LATEST="${IMAGE_PREFIX}:latest"
+
+docker tag -f "${IMAGE_NAME}" "${IMAGE_LATEST}"
+
+gcloud docker -- push "${IMAGE_LATEST}"
+

src/envoy/mixer/BUILD

@@ -16,6 +16,7 @@
 #
 
 load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar")
+load("@bazel_tools//tools/build_defs/docker:docker.bzl", "docker_build")
 
 cc_library(
     name = "filter_lib",
@@ -47,3 +48,42 @@ pkg_tar(
     mode = "0755",
     package_dir = "/usr/local/bin/",
 )
+
+pkg_tar(
+    name = "start_envoy_tar",
+    extension = "tar.gz",
+    files = ["start_envoy"],
+    mode = "0755",
+    package_dir = "/usr/local/bin/",
+)
+
+pkg_tar(
+    name = "config_tar",
+    extension = "tar.gz",
+    files = ["envoy.conf.template"],
+    mode = "0666",
+    package_dir = "/etc/opt/proxy",
+    tags = ["manual"],
+)
+
+docker_build(
+    name = "proxy",
+    base = "@docker_ubuntu//:xenial",
+    entrypoint = [
+        "/usr/local/bin/start_envoy",
+        "-e",
+        "/usr/local/bin/envoy",
+        "-c",
+        "/etc/opt/proxy/envoy.conf",
+        "-t",
+        "/etc/opt/proxy/envoy.conf.template",
+    ],
+    ports = ["9090"],
+    repository = "istio",
+    tags = ["manual"],
+    tars = [
+        ":config_tar",
+        ":envoy_tar",
+        ":start_envoy_tar",
+    ],
+)

src/envoy/mixer/README.md

@@ -38,7 +38,7 @@ This Proxy will use Envoy and talk to Mixer server.
 * Start Envoy proxy, run
 
 ```
-  bazel-bin/src/envoy/mixer/envoy -c src/envoy/mixer/envoy-mixer.conf
+  bazel-bin/src/envoy/mixer/start_envoy
 ```
 
 * Then issue HTTP request to proxy.

src/envoy/mixer/envoy-mixer.conf → src/envoy/mixer/envoy.conf.template

@@ -1,7 +1,7 @@
 {
   "listeners": [
     {
-      "port": 9090,
+      "port": ${PORT},
       "bind_to_port": true,
       "filters": [
         {
@@ -35,7 +35,7 @@
                 "type": "both",
                 "name": "mixer",
                 "config": {
-                  "mixer_server": "localhost:9091"
+                  "mixer_server": "${MIXER_SERVER}"
                 }
               },
               {
@@ -62,7 +62,7 @@
         "lb_type": "round_robin",
         "hosts": [
           {
-            "url": "tcp://localhost:8080"
+            "url": "tcp://${BACKEND}"
           }
         ]
       }

src/envoy/mixer/start_envoy

@@ -0,0 +1,67 @@
+#!/bin/bash
+#
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+#
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+
+function usage() {
+  [[ -n "${1}" ]] && echo "${1}"
+
+  cat <<EOF
+usage: ${BASH_SOURCE[0]} [options ...]"
+  options:
+    -a ... backend address
+    -c ... envoy config file path
+    -e ... envoy binary path
+    -l ... debug level
+    -m ... mixer server address
+    -p ... listening port
+    -t ... envoy config template file path
+EOF
+  exit 2
+}
+
+ENVOY="$ROOT/bazel-bin/src/envoy/mixer/envoy"
+TEMPLATE="$ROOT/src/envoy/mixer/envoy.conf.template"
+CONFIG="$ROOT/src/envoy/mixer/envoy.conf"
+DEBUG=''
+
+PORT='9090'
+MIXER_SERVER='localhost:9091'
+BACKEND='localhost:8080'
+
+while getopts :a:c:e:l:m:p:t: arg; do
+  case ${arg} in
+    a) BACKEND="${OPTARG}";;
+    c) CONFIG="${OPTARG}";;
+    e) ENVOY="${OPTARG}";;
+    l) DEBUG="-l ${OPTARG}";;
+    m) MIXER_SERVER="${OPTARG}";;
+    p) PORT="${OPTARG}";;
+    t) TEMPLATE="${OPTARG}";;
+    *) usage "Invalid option: -${OPTARG}";;
+  esac
+done
+
+sed -e "s|\${PORT}|${PORT}|g" \
+    -e "s|\${BACKEND}|${BACKEND}|g" \
+    -e "s|\${MIXER_SERVER}|${MIXER_SERVER}|g" \
+    "${TEMPLATE}" > "${CONFIG}"
+
+"${ENVOY}" -c "${CONFIG}" "${DEBUG}"
+