add circus support

spec/foreman/export/circus_spec.rb

@@ -0,0 +1,36 @@
+require "spec_helper"
+require "foreman/engine"
+require "foreman/export/circus"
+require "tmpdir"
+
+describe Foreman::Export::Circus, :fakefs do
+  let(:procfile)    { FileUtils.mkdir_p("/tmp/app"); write_procfile("/tmp/app/Procfile") }
+  let(:formation)   { nil }
+  let(:engine)      { Foreman::Engine.new(:formation => formation).load_procfile(procfile) }
+  let(:options)     { Hash.new }
+  let(:circus) { Foreman::Export::Circus.new("/tmp/init", engine, options) }
+
+  before(:each) { load_export_templates_into_fakefs("circus") }
+  before(:each) { stub(circus).say }
+
+  it "exports to the filesystem" do
+    circus.export
+    File.read("/tmp/init/app.ini").should == example_export_file("circus/app-alpha-1.ini")
+  end
+
+  it "cleans up if exporting into an existing dir" do
+    mock(FileUtils).rm("/tmp/init/app.ini")
+    circus.export
+    circus.export
+  end
+
+  context "with concurrency" do
+    let(:formation) { "alpha=2" }
+
+    it "exports to the filesystem with concurrency" do
+      circus.export
+      File.read("/tmp/init/app.ini").should == example_export_file("circus/app-alpha-2.ini")
+    end
+  end
+
+end

spec/resources/export/circus/app-alpha-1.ini

@@ -0,0 +1,30 @@
+[circus]
+check_delay = 5
+endpoint = tcp://127.0.0.1:5555
+
+[watcher:app-alpha-1]
+cmd = ./alpha
+working_dir = /tmp/app
+uid = app
+stdout_stream.class = FileStream
+stdout_stream.filename = /var/log/app/alpha-1.log
+stderr_stream.class = FileStream
+stderr_stream.filename = /var/log/app/alpha-1.error.log
+copy_env = True
+
+[env:app-alpha-1]
+PORT = 5000
+
+[watcher:app-bravo-1]
+cmd = ./bravo
+working_dir = /tmp/app
+uid = app
+stdout_stream.class = FileStream
+stdout_stream.filename = /var/log/app/bravo-1.log
+stderr_stream.class = FileStream
+stderr_stream.filename = /var/log/app/bravo-1.error.log
+copy_env = True
+
+[env:app-bravo-1]
+PORT = 5100
+

spec/resources/export/circus/app-alpha-2.ini

@@ -0,0 +1,30 @@
+[circus]
+check_delay = 5
+endpoint = tcp://127.0.0.1:5555
+
+[watcher:app-alpha-1]
+cmd = ./alpha
+working_dir = /tmp/app
+uid = app
+stdout_stream.class = FileStream
+stdout_stream.filename = /var/log/app/alpha-1.log
+stderr_stream.class = FileStream
+stderr_stream.filename = /var/log/app/alpha-1.error.log
+copy_env = True
+
+[env:app-alpha-1]
+PORT = 5000
+
+[watcher:app-alpha-2]
+cmd = ./alpha
+working_dir = /tmp/app
+uid = app
+stdout_stream.class = FileStream
+stdout_stream.filename = /var/log/app/alpha-2.log
+stderr_stream.class = FileStream
+stderr_stream.filename = /var/log/app/alpha-2.error.log
+copy_env = True
+
+[env:app-alpha-2]
+PORT = 5001
+