Class: Cloudler

Inherits:
Object
  • Object
show all
Defined in:
lib/cloudler.rb

Constant Summary collapse

VERSION = 
'0.2.0'

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.command ⇒ Object

Returns the value of attribute command.



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# File 'lib/cloudler.rb', line 9

def command
  @command
end

.files ⇒ Object

Returns the value of attribute files.



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# File 'lib/cloudler.rb', line 9

def files
  @files
end

.gems ⇒ Object

Returns the value of attribute gems.



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# File 'lib/cloudler.rb', line 9

def gems
  @gems
end

.hosts ⇒ Object

Returns the value of attribute hosts.



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# File 'lib/cloudler.rb', line 9

def hosts
  @hosts
end

.password ⇒ Object

Returns the value of attribute password.



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# File 'lib/cloudler.rb', line 9

def password
  @password
end

.path ⇒ Object

Returns the value of attribute path.



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# File 'lib/cloudler.rb', line 9

def path
  @path
end

.precommands ⇒ Object

Returns the value of attribute precommands.



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# File 'lib/cloudler.rb', line 9

def precommands
  @precommands
end

.username ⇒ Object

Returns the value of attribute username.



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# File 'lib/cloudler.rb', line 9

def username
  @username
end

Class Method Details

.execute_command(ssh) ⇒ Object 



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# File 'lib/cloudler.rb', line 97

def self.execute_command ssh
	# We cd to @path so that the user has access to their uploaded files when
	# they try to run them
	ssh.exec! "cd #{@path} && #{@command}" do |ch, stream, data|
		puts data
	end
end

.execute_precommands(ssh) ⇒ Object 



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# File 'lib/cloudler.rb', line 81

def self.execute_precommands ssh
	@precommands.each do |command|
		# We cd to @path so that the user can modify or run their uploaded files if
		# they need to
		ssh.exec "cd #{@path} && #{command}" do |ch,stream,data|
			puts data
		end
	end
end

.init ⇒ Object 



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# File 'lib/cloudler.rb', line 105

def self.init
	File.open "Cloudfile", 'w' do |f|
		f.write <<-EOS
host 'HOSTNAME' # or for multiple servers, use ['HOST1', 'HOST2', ...]
username 'USERNAME'
password 'PASSWORD'
path 'PATH' # Optional path to upload the files to. By default it is /root/.cloudler, or /home/[username]/.cloudler
precommands [] # Optional list of commands to run before executing the main command
command 'COMMAND'
files [] # Optional list of files to upload
gems [] # Optional list of gems to install
		EOS
	end
end

.install_gems(ssh) ⇒ Object 



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# File 'lib/cloudler.rb', line 91

def self.install_gems ssh
	ssh.exec! "gem install #{@gems.join ' '}" do |ch, stream, data|
		puts data
	end
end

.run(to_run = [:upload, :precommands, :gems, :command]) ⇒ Object 



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# File 'lib/cloudler.rb', line 24

def self.run to_run = [:upload, :precommands, :gems, :command]
	# Set some defaults
	@files ||= []
	@gems ||= []
	@precommands ||= []
	@path ||= 
		if @username == 'root'
			'/root/.cloudler'
		else
			"/home/#{@username}/.cloudler"
		end

	@hosts.each do |host|
		Net::SSH.start(host, @username, :password => @password) do |ssh|
			if to_run.member? :upload
				puts "Uploading files..."
				upload_files ssh	
				puts "Files uploaded."
			end

			if to_run.member? :precommands
				if @precommands.length > 0
					puts "Executing pre-commands"
					execute_precommands ssh
					puts "Pre-commands executed."
				end
			end

			if to_run.member? :gems
				if @gems.length > 0 
					puts "Installing gems..."
					install_gems ssh
					puts "Gems installed"
				end
			end

			if to_run.member? :command
				puts "Executing command..."
				execute_command ssh
				puts "Command finished."
			end
		end				
	end
end

.test_connection ⇒ Object 



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# File 'lib/cloudler.rb', line 12

def self.test_connection
	@hosts.each do |host|
		begin
			Net::SSH.start(host, @username, :password => @password) do |ssh|
				puts "Connected to #{host} successfully."
			end
		rescue
			puts "Error connecting to #{host}."
		end
	end
end

.upload_files(ssh) ⇒ Object 



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# File 'lib/cloudler.rb', line 69

def self.upload_files ssh
	ssh.exec! "rm -rf #{@path}"
	ssh.exec! "mkdir #{@path}"

	# By default, Cloudler uploads the entire current directory
	if @files.length > 0
  	ssh.scp.upload!(@files.join(' '), @path, :recursive => true)
	else
		ssh.scp.upload!('.', @path, :recursive => true)
	end
end