add test that ensures bootstrap can not run when postgres is running

[discourse_docker.git] / launcher

diff --git a/launcher b/launcher
index b00b63826e11024420745df2a088d3409b7367f7..7b107a1974a41a3b0331c4f790f1b4a4a8bf80d9 100755 (executable)
--- a/launcher
+++ b/launcher
@@ -9,6 +9,13 @@ local_discourse=local_discourse
 image=samsaffron/discourse
 docker_path=`which docker`
 
+docker_ip=`/sbin/ifconfig | \
+                grep -B1 "inet addr" | \
+                awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' | \
+                grep docker0 | \
+                awk -F: '{ print $3 }';`
+
+
 usage () {
   echo "Usage: launcher COMMAND CONFIG"
   echo "Commands:"
@@ -18,7 +25,7 @@ usage () {
   echo "    destroy:    Stop and remove a container"
   echo "    ssh:        Start a bash shell in a running container"
   echo "    logs:       Docker logs for container"
-  echo "    bootstrap:  Bootstrap a container for the config base on an image"
+  echo "    bootstrap:  Bootstrap a container for the config based on a template"
   exit 1
 }
 
@@ -45,6 +52,49 @@ set_volumes() {
         "require 'yaml'; puts YAML.load(STDIN.readlines.join)['volumes'].map{|v| '-v ' << v['volume']['host'] << ':' << v['volume']['guest'] << ' '}.join"`
 }
 
+set_template_info() {
+
+    templates=`cat $config_file | docker run -rm -i -a stdin -a stdout $image ruby -e \
+      "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
+
+
+    arrTemplates=(${templates// / })
+    config_data=$(cat $config_file)
+
+    input="hack: true"
+
+
+    for template in "${arrTemplates[@]}"
+    do
+      [ ! -z $template ] && {
+        input="$input _FILE_SEPERATOR_ $(cat $template)"
+      }
+    done
+
+    # we always want our config file last so it takes priority
+    input="$input _FILE_SEPERATOR_ $config_data"
+
+    read -r -d '' env_ruby << 'RUBY'
+    require 'yaml'
+
+    input=STDIN.readlines.join
+    env = {}
+    input.split('_FILE_SEPERATOR_').each do |yml|
+       yml.strip!
+       begin
+         env.merge!(YAML.load(yml)['env'] || {})
+       rescue => e
+        puts yml
+        p e
+       end
+    end
+    puts env.map{|k,v| "-e #{k}=#{v}" }.join(" ")
+RUBY
+
+    env=`exec echo "$input" | docker run -rm -i -a stdin -a stdout $image ruby -e "$env_ruby"`
+    echo "Calculated ENV: $env"
+}
+
 [ -z $docker_path ] && {
   install_docker
 }
@@ -63,29 +113,30 @@ fi
 case "$command" in
   bootstrap)
 
-      templates=`cat $config_file | docker run -rm -i -a stdin -a stdout $image ruby -e \
-        "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
+      set_template_info
 
-      arrTemplates=(${templates// / })
-      config_data=$(cat $config_file)
-      input="hack: true"
+      base_image=`cat $config_file | docker run -rm -i -a stdin -a stdout $image ruby -e \
+        "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
 
-      for template in "${arrTemplates[@]}"
-      do
-        [ ! -z $template ] && {
-          input="$input _FILE_SEPERATOR_ $(cat $template)"
-        }
-      done
+      update_pups=`cat $config_file | docker run -rm -i -a stdin -a stdout $image ruby -e \
+        "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
 
-      # we always want our config file last so it takes priority
-      input="$input _FILE_SEPERATOR_ $config_data"
+      if [[ ! X"" = X"$base_image" ]]; then
+        image=$base_image
+      fi
 
       set_volumes
 
       rm -f $cidbootstrap
 
-      (exec echo "$input" | docker run -cidfile $cidbootstrap -i -a stdin -a stdout -a stderr $volumes $image \
-         /bin/bash -c 'cd /pups && git pull && /pups/bin/pups --stdin') \
+      run_command="cd /pups &&"
+      if [[ ! "false" =  $update_pups ]]; then
+        run_command="$run_command git pull &&"
+      fi
+      run_command="$run_command /pups/bin/pups --stdin"
+
+      (exec echo "$input" | docker run $env -e DOCKER_HOST_IP=$docker_ip -cidfile $cidbootstrap -i -a stdin -a stdout -a stderr $volumes $image \
+         /bin/bash -c "$run_command") \
          || (docker rm `cat $cidbootstrap` && rm $cidbootstrap)
 
       [ ! -e $cidbootstrap ] && echo "FAILED TO BOOTSTRAP" && exit 1
@@ -95,7 +146,7 @@ case "$command" in
       docker commit `cat $cidbootstrap` $local_discourse/$config || echo 'FAILED TO COMMIT'
       docker rm `cat $cidbootstrap` && rm $cidbootstrap
 
-      echo "Successfully bootstrappd, to starup use ./launcher start $config"
+      echo "Successfully bootstrapped, to startup use ./launcher start $config"
       exit 0
       ;;
 
@@ -143,11 +194,39 @@ case "$command" in
            ports=`cat $config_file | docker run -rm -i -a stdout -a stdin $image ruby -e \
                   "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| '-p ' << p.to_s << ' '}.join"`
 
+           set_template_info
            set_volumes
 
-           docker run -name $config -cidfile $cidfile $ports -d $volumes $local_discourse/$config /usr/bin/runsvdir -P /etc/service
+           existing=`docker ps -a | awk '{ print $1, $(NF) }' | grep "$config$" | awk '{ print $1 }'`
+           if [ ! -z $existing ]
+           then
+             echo "Found an existing container by its name, recovering cidfile, please rerun"
+             echo $existing > $cidfile
+             exit 1
+           fi
+
+           docker run $env -e DOCKER_HOST_IP=$docker_ip -name $config -cidfile $cidfile $ports \
+                      -d $volumes $local_discourse/$config /usr/bin/runsvdir -P /etc/service
+
            exit 0
          else
+           cid=`cat $cidfile`
+
+           if [ -z $cid ]
+           then
+             echo "Detected empty cid file, deleting, please re-run"
+             rm $cidfile
+             exit 1
+           fi
+
+           found=`docker ps -q -a -notrunc | grep $cid`
+           if [ -z $found ]
+           then
+             echo "Invalid cid file, deleting, please re-run"
+             rm $cidfile
+             exit 1
+           fi
+
            echo "cid found, ensuring container is started"
            docker start `cat $cidfile`
            exit 0