webserver: enable crowbar to change workers/threads itself

chef/cookbooks/crowbar/recipes/default.rb

@@ -233,6 +233,8 @@
 unless node["crowbar"].nil? or node["crowbar"]["users"].nil? or node["crowbar"]["realm"].nil?
   web_port = node["crowbar"]["web_port"] || 3000
   realm = node["crowbar"]["realm"]
+  workers = node["crowbar"]["workers"] || 2
+  threads = node["crowbar"]["threads"] || 16
 
   users = {}
   node["crowbar"]["users"].each do |k,h|
@@ -252,6 +254,8 @@
 else
   web_port = 3000
   realm = nil
+  workers = 2
+  threads = 16
 end
 
 # Remove rainbows configuration, dating from before the switch to puma
@@ -267,6 +271,8 @@
   variables(
     web_host: "127.0.0.1",
     web_port: web_port,
+    workers: workers,
+    threads: threads
   )
 end
 

chef/cookbooks/crowbar/templates/default/sysconfig.crowbar.erb

@@ -14,7 +14,7 @@ CROWBAR_ENV="production"
 ## Default:         16
 ## ServiceRestart:  crowbar
 # Sets the maximum number of threads used by the web server.
-CROWBAR_THREADS="16"
+CROWBAR_THREADS="<%= @threads %>"
 
 ## Path:            Crowbar
 ## Description:     Maximum number of worker processes
@@ -23,7 +23,7 @@ CROWBAR_THREADS="16"
 ## ServiceRestart:  crowbar
 # Sets the maximum number of separate worker processes spawned by the
 # web server.
-CROWBAR_WORKERS="2"
+CROWBAR_WORKERS="<%= @workers %>"
 
 ## Path:            Crowbar
 ## Description:     Listen address
@@ -40,4 +40,3 @@ CROWBAR_LISTEN="<%= @web_host %>"
 ## ServiceRestart:  crowbar
 # Port which Crowbar listens to.
 CROWBAR_PORT=<%= @web_port %>
-

chef/data_bags/crowbar/migrate/crowbar/101_crowbar-workers-and-threads.rb

@@ -0,0 +1,11 @@
+def upgrade(ta, td, a, d)
+  a["workers"] = ta["workers"]
+  a["threads"] = ta["threads"]
+  return a, d
+end
+
+def downgrade(ta, td, a, d)
+  a.delete("workers")
+  a.delete("threads")
+  return a, d
+end

chef/data_bags/crowbar/template-crowbar.json

@@ -14,6 +14,8 @@
       },
       "realm": "Crowbar - By selecting OK you are agreeing to the License Agreement",
       "web_port": 3000,
+      "workers": 2,
+      "threads": 16,
       "users": {
         "machine-install": { "password": "machine_password" },
         "crowbar": { "password": "crowbar" }
@@ -28,7 +30,7 @@
     "crowbar": {
       "crowbar-revision": 0,
       "crowbar-applied": false,
-      "schema-revision": 100,
+      "schema-revision": 101,
       "element_states": {
         "crowbar": [ "all" ],
         "crowbar-upgrade": [ "readying", "ready", "applying", "crowbar_upgrade" ]

chef/data_bags/crowbar/template-crowbar.schema

@@ -11,9 +11,11 @@
               }
             },
             "web_port": { "type": "int", "required": true },
+            "workers": { "type": "int", "required": true },
+            "threads": { "type": "int", "required": true },
             "realm": { "type": "str", "required": false },
             "users": { "type": "map", "required": true, "mapping": {
-                = : { "type": "map", "required": true, "mapping": { 
+                = : { "type": "map", "required": true, "mapping": {
                     "password": { "type": "str" },
                     "digest": { "type": "str" },
                     "disabled": { "type": "bool" }

crowbar_framework/spec/fixtures/data_bags/template-crowbar.json

@@ -16,6 +16,8 @@
       },
       "realm": "Crowbar - By selecting OK you are agreeing to the License Agreement",
       "web_port": 3000,
+      "workers": 2,
+      "threads": 16,
       "users": {
         "machine-install": { "password": "machine_password" },
         "crowbar": { "password": "crowbar" }
@@ -46,4 +48,3 @@
     }
   }
 }
-