software/dream: modernize a bit

Install a promise so that we know when instance is ready
Use a builout.hash.cfg for easier management

software/dream/buildout.hash.cfg

+[instance]
+filename = instance.cfg
+md5sum = d2b0e50708b9b92aff44bdbef2fb52b9
\ No newline at end of file

software/dream/instance.cfg

@@ -6,22 +6,26 @@ parts =
   dream_interpreter
   grunt_watch
   publish-connection-parameter
+  dream-platform-url-available
 
 eggs-directory = ${buildout:eggs-directory}
 develop-eggs-directory = ${buildout:develop-eggs-directory}
 offline = true
+extends = ${monitor-template:rendered}
 
 # parameters
 [instance-parameter]
 recipe = slapos.cookbook:slapconfiguration
-computer = $${slap_connection:computer_id}
-partition = $${slap_connection:partition_id}
-url = $${slap_connection:server_url}
-key = $${slap_connection:key_file}
-cert = $${slap_connection:cert_file}
+computer = $${slap-connection:computer-id}
+partition = $${slap-connection:partition-id}
+url = $${slap-connection:server-url}
+key = $${slap-connection:key-file}
+cert = $${slap-connection:cert-file}
+
 [dream_platform_parameter]
 port = 8080
 host = $${instance-parameter:ipv6-random}
+url = http://[$${:host}]:$${:port}
 
 # interpreter
 [dream_interpreter]
@@ -35,6 +39,13 @@ recipe = slapos.cookbook:wrapper
 command-line = ${buildout:bin-directory}/dream_platform --debug --host $${dream_platform_parameter:host} --port $${dream_platform_parameter:port} --log $${directory:log}/dream_platform.log
 wrapper-path = $${directory:service}/dream_platform
 
+[dream-platform-url-available]
+<= monitor-promise-base
+module = check_url_available
+name = $${:_buildout_section_name_}.py
+config-url=  $${dream_platform_parameter:url}
+
+
 [grunt_watch]
 recipe = slapos.cookbook:wrapper
 command-line = bash -c 'cd ${dream-repository.git:location}; PATH=${nodejs:location}/bin/:$PATH ${dream-repository.git:location}/node_modules/grunt-cli/bin/grunt watch -f > $${directory:log}/grunt.log'
@@ -63,5 +74,5 @@ log = $${:var}/log
 
 [publish-connection-parameter]
 recipe = slapos.cookbook:publishurl
-url = http://[$${dream_platform_parameter:host}]:$${dream_platform_parameter:port}
+url = $${dream_platform_parameter:url}
 

software/dream/software.cfg

@@ -4,6 +4,8 @@ extends =
   ../../stack/slapos.cfg
   ../../stack/nodejs.cfg
   ../../component/manpy/buildout.cfg
+  ../../stack/monitor/buildout.cfg
+  ./buildout.hash.cfg
 parts =
   slapos-cookbook
   manpy
@@ -13,7 +15,7 @@ parts =
 
 [instance]
 recipe = slapos.recipe.template
-url = ${:_profile_base_location_}/instance.cfg
+url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/instance.cfg
 
 [dream_testrunner]