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etcd frontend server
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| #!/usr/bin/env bash | |
| set -e -x | |
| # /var/vcap/packages/frontend | |
| cp -a frontend/* ${BOSH_INSTALL_TARGET} | |
| cd ${BOSH_INSTALL_TARGET} | |
| /var/vcap/packages/ruby_2.4.1/bin/bundle install \ | |
| --local \ | |
| --deployment \ | |
| --without development test |
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| check process frontend | |
| with pidfile /var/vcap/sys/run/frontend/pid | |
| start program "/var/vcap/jobs/frontend/bin/frontend_ctl start" | |
| stop program "/var/vcap/jobs/frontend/bin/frontend_ctl stop" | |
| group vcap |
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| require 'rubygems' | |
| require 'sinatra' | |
| require 'httparty' | |
| $stdout.sync = true | |
| $stderr.sync = true | |
| $etcd_servers = ENV["ETCD_SERVERS"].split(",") | |
| def random_etcd_server | |
| $etcd_servers.sample | |
| end | |
| def value_url | |
| "http://" + random_etcd_server + ":4001/v2/keys/frontend" | |
| end | |
| def get_value | |
| JSON.parse(HTTParty.get(value_url).body)["node"]["value"] rescue "" | |
| end | |
| def set_value(new_value) | |
| HTTParty.put(value_url, body: "value=#{new_value}") | |
| end | |
| def html_escape(v) | |
| Rack::Utils.escape_html(v) | |
| end | |
| get '/' do | |
| <<-HTML | |
| <!DOCTYPE html> | |
| <html><body> | |
| <h1>Etcd Frontend</h1> | |
| <pre><code>#{html_escape(get_value)}</code></pre> | |
| <form action="/" method="POST"> | |
| <label>New value:</label> | |
| <input type="text" name="value"/> | |
| <input type="submit" value="Change"/> | |
| </form> | |
| </body></html> | |
| HTML | |
| end | |
| post '/' do | |
| set_value(params[:value]) | |
| redirect '/' | |
| end |
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| #!/bin/bash | |
| RUN_DIR=/var/vcap/sys/run/frontend | |
| LOG_DIR=/var/vcap/sys/log/frontend | |
| PIDFILE=${RUN_DIR}/pid | |
| RUBYBIN=/var/vcap/packages/ruby_2.4.1/bin | |
| export ETCD_SERVERS="<%= p('frontend.etcd_servers').join(',') %>" | |
| case $1 in | |
| start) | |
| mkdir -p $RUN_DIR $LOG_DIR | |
| chown -R vcap:vcap $RUN_DIR $LOG_DIR | |
| echo $$ > $PIDFILE | |
| cd /var/vcap/packages/frontend | |
| export PATH=$RUBYBIN:$PATH | |
| exec $RUBYBIN/bundle exec \ | |
| rackup -p <%= p("frontend.port") %> -o 0.0.0.0 \ | |
| >> $LOG_DIR/frontend.stdout.log \ | |
| 2>> $LOG_DIR/frontend.stderr.log | |
| ;; | |
| stop) | |
| kill -9 `cat $PIDFILE` | |
| rm -f $PIDFILE | |
| ;; | |
| *) | |
| echo "Usage: ctl {start|stop}" | |
| exit 2 | |
| ;; | |
| esac |
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| --- | |
| name: frontend | |
| templates: | |
| frontend_ctl.erb: bin/frontend_ctl | |
| packages: | |
| - frontend | |
| - ruby_2.4.1 | |
| properties: | |
| frontend.port: | |
| description: Port that the frontend app listens on | |
| default: 80 | |
| frontend.etcd_servers: | |
| description: IP addresses of backend Etcd servers |
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| --- | |
| name: frontend | |
| dependencies: | |
| - ruby_2.4.1 | |
| files: | |
| - frontend/**/* |
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| #!/usr/bin/env bash | |
| set -e -x | |
| # BOSH_INSTALL_TARGET => /var/vcap/packages/ruby_2.4.1 | |
| tar -xzf ruby-2.4.1.tar.gz | |
| pushd ruby-2.4.1 | |
| ./configure \ | |
| --prefix=${BOSH_INSTALL_TARGET} \ | |
| --disable-install-doc | |
| make | |
| make install | |
| popd | |
| tar -zxvf rubygems-2.6.12.tgz | |
| pushd rubygems-2.6.12 | |
| ${BOSH_INSTALL_TARGET}/bin/ruby setup.rb | |
| popd | |
| ${BOSH_INSTALL_TARGET}/bin/gem install bundler-1.15.3.gem --no-ri --no-rdoc |
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| --- | |
| name: ruby_2.4.1 | |
| dependencies: [] | |
| files: | |
| - ruby-2.4.1.tar.gz # https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.1.tar.gz | |
| - rubygems-2.6.12.tgz # https://rubygems.org/rubygems/rubygems-2.6.12.tgz | |
| - bundler-1.15.3.gem # https://rubygems.org/downloads/bundler-1.15.3.gem |
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