Make default node-env use alpine. List envs in documentation. (#354)
closes #319 * Make default node-env use alpine, and support separate debian env. List envs in documentation. * Copy ONBUILD base image commands into node Dockerfiles * Copy more commands from onbuild image * Tidy dockerfiles
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@@ -24,7 +24,7 @@ Language-neutral components:
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Language-specific components:
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* Environment container
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* Environment container(s)
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Controller
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@@ -112,13 +112,13 @@ Environment Container
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---------------------
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Environment containers run user-defined functions. Environment
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containers are language specific. They must contain an HTTP server
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and a loader for functions.
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containers are language specific. Each environment container must
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contain an HTTP server and a loader for functions.
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Poolmgr deploys the environment container into a pod with fetcher
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(fetcher is a simple utility that can fetch an HTTP url to a file at a
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configured location). This pod forms a "generic pod", because it can
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be loaded with any function.
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be loaded with any function in that language.
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When poolmgr needs to create a service for a function, it calls
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fetcher to fetch the function. Fetcher downloads the function into a
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@@ -134,7 +134,7 @@ Following is a diagram describe how log service works:
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1. Pool manager choose a pod from pool to execute user function
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1. Pool manager chooses a pod from the pool to execute user function
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2. Pool manager makes a HTTP POST to logger helper, once helper receives
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the request it creates a symlink to container log for fluentd.
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3. Fluentd reads log from symlink and pipes to influxdb
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@@ -45,8 +45,24 @@ A _function_ is a piece of code that follows the fission function
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interface.
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An _environment_ contains the language- and runtime-specific parts of
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running a function. Fission comes with NodeJS and Python
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environments; you can also extend environments or create entirely new
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running a function.
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The following environments are currently available:
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| Environment | Image |
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| ------------------------------------ | ------------------------- |
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| Binary (for executables or scripts) | `fission/binary-env` |
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| Go | `fission/go-env` |
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| .NET | `fission/dotnet-env` |
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| .NET 2.0 | `fission/dotnet20-env` |
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| NodeJS (Alpine) | `fission/node-env` |
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| NodeJS (Debian) | `fission/node-env-debian` |
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| Perl | `fission/perl-env` |
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| PHP 7 | `fission/php-env` |
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| Python 3 | `fission/python-env` |
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| Ruby | `fission/ruby-env` |
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You can also extend environments or create entirely new
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ones if you want. (An environment is essentially just a container
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with a webserver and dynamic loader.)
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@@ -1,7 +1,18 @@
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# A docker image for the func container.
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FROM node:8-onbuild
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# default variant is the official alpine node image (much smaller than the standard image)
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FROM node:8-alpine
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ADD server.js /usr/src/app/server.js
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ARG NODE_ENV
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ENV NODE_ENV $NODE_ENV
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EXPOSE 8888
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RUN mkdir -p /usr/src/app
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WORKDIR /usr/src/app
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COPY package.json /usr/src/app/
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RUN npm install && npm cache clean --force
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COPY server.js /usr/src/app/server.js
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CMD [ "npm", "start" ]
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EXPOSE 8888
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@@ -0,0 +1,18 @@
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# A docker image for the func container.
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# debian variant is the official standard node image (larger than the alpine image)
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FROM node:8
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ARG NODE_ENV
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ENV NODE_ENV $NODE_ENV
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RUN mkdir -p /usr/src/app
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WORKDIR /usr/src/app
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COPY package.json /usr/src/app/
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RUN npm install && npm cache clean --force
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COPY server.js /usr/src/app/server.js
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CMD [ "npm", "start" ]
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EXPOSE 8888
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@@ -2,12 +2,19 @@
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This directory contains several examples to get you started using Node.js with Fission.
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## Environment
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Before running any of these functions, make sure you have created a `nodejs` Fission environment:
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```
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$ fission env create --name nodejs --image fission/node-env
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```
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Note: The default `fission/node-env` image is based on Alpine, which is much smaller than the main Debian Node image (65MB vs 680MB) while still being suitable for most use cases.
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If you need to use the full Debian image use the `fission/node-env-debian` image instead.
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See the [official Node docker hub repo](https://hub.docker.com/_/node/) for considerations
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relating to this choice.
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## Function signature
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Every Node.js function has the same basic form:
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+28
-14
@@ -96,17 +96,29 @@ push_fetcher_image() {
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build_and_push_env_image() {
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version=$1
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envdir=$2
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imgname=$3
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imgnamebase=$3
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imgvariant=$4
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echo "Building $envdir -> $imgname:$version"
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if [ -z "$imgvariant" ]
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then
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# no variant specified, just use the base name
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imgname=$imgnamebase
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dockerfile="Dockerfile"
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else
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# variant specified - append variant to image name and assume dockerfile
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# exists with same suffix (e.g. image node-env-debian built from Dockerfile-debian)
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imgname="$imgname-$imgvariant"
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dockerfile="Dockerfile-$imgvariant"
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fi
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echo "Building $envdir -> $imgname:$version using $dockerfile"
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pushd $DIR/environments/$envdir
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if [ -f build.sh ]
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then
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./build.sh
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fi
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docker build -t fission/$imgname:$version .
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docker tag fission/$imgname:$version fission/$imgname:latest
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fi
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docker build -t fission/$imgname:$version -f $dockerfile .
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docker tag fission/$imgname:$version fission/$imgname:latest
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docker push fission/$imgname:$version
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docker push fission/$imgname:latest
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popd
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@@ -115,15 +127,17 @@ build_and_push_env_image() {
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build_and_push_all_envs() {
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version=$1
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build_and_push_env_image $version nodejs node-env
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build_and_push_env_image $version binary binary-env
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build_and_push_env_image $version dotnet dotnet-env
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build_and_push_env_image $version dotnet20 dotnet20-env
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build_and_push_env_image $version go go-env
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build_and_push_env_image $version perl perl-env
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build_and_push_env_image $version php7 php-env
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build_and_push_env_image $version python3 python-env
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build_and_push_env_image $version ruby ruby-env
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# call with version, env dir, image name base, image name variant
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build_and_push_env_image "$version" "nodejs" "node-env" ""
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build_and_push_env_image "$version" "nodejs" "node-env" "debian"
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build_and_push_env_image "$version" "binary" "binary-env" ""
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build_and_push_env_image "$version" "dotnet" "dotnet-env" ""
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build_and_push_env_image "$version" "dotnet20" "dotnet20-env" ""
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build_and_push_env_image "$version" "go" "go-env" ""
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build_and_push_env_image "$version" "perl" "perl-env" ""
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build_and_push_env_image "$version" "php7" "php-env" ""
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build_and_push_env_image "$version" "python3" "python-env" ""
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build_and_push_env_image "$version" "ruby" "ruby-env" ""
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}
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build_charts() {
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