add -p flag to specify the base port for apps

export/upstart/process.conf.erb

@@ -3,4 +3,4 @@ stop on stopping <%= app %>-<%= process.name %>
 respawn
 
 chdir <%= engine.directory %>
-exec su <%= user %> -c "<%= process.command %> >> <%= log_root %>/<%=process.name%>-<%=num%>.log 2>&1"
+exec su <%= user %> -c "PORT=<%= port %> <%= process.command %> >> <%= log_root %>/<%=process.name%>-<%=num%>.log 2>&1"

lib/foreman/cli.rb

@@ -25,10 +25,11 @@ def start(process=nil)
 
   desc "export FORMAT LOCATION", "Export the application to another process management format"
 
-  method_option :app,         :type => :string, :aliases => "-a"
-  method_option :log,         :type => :string, :aliases => "-l"
-  method_option :user,        :type => :string, :aliases => "-u"
-  method_option :concurrency, :type => :string, :aliases => "-c",
+  method_option :app,         :type => :string,  :aliases => "-a"
+  method_option :log,         :type => :string,  :aliases => "-l"
+  method_option :port,        :type => :numeric, :aliases => "-p"
+  method_option :user,        :type => :string,  :aliases => "-u"
+  method_option :concurrency, :type => :string,  :aliases => "-c",
     :banner => '"alpha=5,bar=3"'
 
   def export(format, location=nil)
@@ -40,12 +41,8 @@ def export(format, location=nil)
       else error "Unknown export format: #{format}."
     end
 
-    formatter.new(engine).export(location,
-      :name        => options[:app],
-      :user        => options[:user],
-      :log         => options[:log],
-      :concurrency => options[:concurrency]
-    )
+    formatter.new(engine).export(location, options)
+
   rescue Foreman::Export::Exception => ex
     error ex.message
   end

lib/foreman/export/base.rb

@@ -36,6 +36,12 @@ def parse_concurrency(concurrency)
     end
   end
 
+  def port_for(base_port, app, num)
+    base_port ||= 5000
+    offset = engine.processes.keys.sort.index(app) * 100
+    base_port.to_i + offset + num - 1
+  end
+
   def write_file(filename, contents)
     say "writing: #{filename}"
 

lib/foreman/export/inittab.rb

@@ -11,10 +11,17 @@ def export(fname=nil, options={})
 
     inittab = []
     inittab << "# ----- foreman #{app} processes -----"
-    engine.processes.values.each_with_index do |process, num|
-      id = app.slice(0, 2).upcase + sprintf("%02d", num+1)
-      inittab << "#{id}:4:respawn:/bin/su - #{user} -c '#{process.command} >> #{log_root}/#{process.name}-#{num+1}.log 2>&1'"
+
+    engine.processes.values.inject(1) do |index, process|
+      1.upto(concurrency[process.name]) do |num|
+        id = app.slice(0, 2).upcase + sprintf("%02d", index)
+        port = port_for(options[:port], process.name, num)
+        inittab << "#{id}:4:respawn:/bin/su - #{user} -c 'PORT=#{port} #{process.command} >> #{log_root}/#{process.name}-#{num}.log 2>&1'"
+        index += 1
+      end
+      index
     end
+
     inittab << "# ----- end foreman #{app} processes -----"
 
     inittab = inittab.join("\n") + "\n"

lib/foreman/export/upstart.rb

@@ -31,6 +31,7 @@ def export(location, options={})
       write_file "#{location}/#{app}-#{process.name}.conf", process_master_config
 
       1.upto(concurrency[process.name]) do |num|
+        port = port_for(options[:port], process.name, num)
         process_config = ERB.new(process_template).result(binding)
         write_file "#{location}/#{app}-#{process.name}-#{num}.conf", process_config
       end

man/foreman.1.ronn

@@ -43,13 +43,17 @@ The following options control how the application is run:
     Use this name rather than the application's root directory name as the
     name of the application when exporting.
 
-  * `-l`, `--log`:
-    Specify the directory to place process logs in.
-
   * `-c`, `--concurrency`:
     Specify the number of each process type to run. The value passed in
     should be in the format `process=num,process=num`
 
+  * `-l`, `--log`:
+    Specify the directory to place process logs in.
+
+  * `-p`, `--port`:
+    Specify which port to use as the base for this application. Should be
+    a multiple of 1000.
+
   * `-u`, `--user`:
     Specify the user the application should be run as. Defaults to the
     app name