Service feature (#98)

* add test and put up service feature

* rubocop appease

.rubocop.yml

@@ -4,4 +4,8 @@ inherit_from: .rubocop_todo.yml
 # its basically what they do anyway
 Metrics/BlockLength:
   Exclude:
-    - 'spec/**/*.rb'
+    - 'spec/**/*.rb'
+
+Layout/LineLength:
+  Exclude:
+    - 'spec/**/*'

lib/kaiser/cli.rb

@@ -110,11 +110,7 @@ def start_services
       services.each do |service|
         Config.info_out.puts "Starting service: #{service.name}"
         run_if_dead(
-          service.shared_name,
-          "docker run -d
-            --name #{service.shared_name}
-            --network #{Config.config[:networkname]}
-            #{service.image}"
+          service.shared_name, service.start_docker_command
         )
       end
     end
@@ -246,6 +242,10 @@ def default_db_image
     end
 
     def attach_app
+      start_services
+
+      puts 'Attaching to app...'
+
       cmd = (ARGV || []).join(' ')
       killrm app_container_name
 
@@ -265,6 +265,8 @@ def attach_app
         #{app_params}
         kaiser:#{envname}-#{current_branch} #{cmd}".tr("\n", ' ')
 
+      stop_services
+
       Config.out.puts 'Cleaning up...'
     end
 

lib/kaiser/kaiserfile.rb

@@ -102,10 +102,20 @@ def type(value)
       @server_type = value
     end
 
-    def service(name, image: name)
+    def service(name,
+                image: name,
+                command: nil,
+                binds: {},
+                env: {})
+
       raise "duplicate service #{name.inspect}" if @services.key?(name)
 
-      @services[name] = { image: image }
+      @services[name] = {
+        image: image,
+        command: command,
+        binds: binds,
+        env: env
+      }
     end
   end
 end

lib/kaiser/service.rb

@@ -18,5 +18,43 @@ def shared_name
     def image
       @service_info[:image]
     end
+
+    def command
+      @service_info[:command].to_s
+    end
+
+    def binds
+      @service_info[:binds] || {}
+    end
+
+    def env
+      @service_info[:env] || {}
+    end
+
+    def start_docker_command
+      envstring = env.map do |k, v|
+        "-e #{k}=#{v}"
+      end.join(' ')
+
+      bindstring = binds.map do |k, v|
+        "-v #{k}:#{v}"
+      end.join(' ')
+
+      commandstring = command
+
+      cmd_array = [
+        'docker run -d',
+        "--name #{shared_name}",
+        "--network #{Config.config[:networkname]}",
+        envstring,
+        bindstring,
+        image,
+        commandstring
+      ]
+
+      cmd_array.filter! { |x| !x.empty? }
+
+      cmd_array.join(' ')
+    end
   end
 end

lib/kaiser/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Kaiser
-  VERSION = '0.7.1'
+  VERSION = '0.8.0'
 end

spec/kaiserfile_spec.rb

@@ -197,7 +197,12 @@
 
       it 'adds a service' do
         kaiserfile = Kaiser::Kaiserfile.new('Kaiserfile')
-        expect(kaiserfile.services).to eq('santaclaus' => { image: 'santaclaus' })
+        expect(kaiserfile.services).to eq('santaclaus' => {
+                                            image: 'santaclaus',
+                                            command: nil,
+                                            binds: {},
+                                            env: {}
+                                          })
       end
     end
 
@@ -206,7 +211,12 @@
 
       it 'adds a service with the image name' do
         kaiserfile = Kaiser::Kaiserfile.new('Kaiserfile')
-        expect(kaiserfile.services).to eq('santaclaus' => { image: 'northpole/santaclaus' })
+        expect(kaiserfile.services).to eq('santaclaus' => {
+                                            image: 'northpole/santaclaus',
+                                            command: nil,
+                                            binds: {},
+                                            env: {}
+                                          })
       end
     end
 
@@ -215,7 +225,12 @@
 
       it 'adds a service with the image name' do
         kaiserfile = Kaiser::Kaiserfile.new('Kaiserfile')
-        expect(kaiserfile.services).to eq('santaclaus' => { image: 'northpole/santaclaus:last_christmas' })
+        expect(kaiserfile.services).to eq('santaclaus' => {
+                                            image: 'northpole/santaclaus:last_christmas',
+                                            command: nil,
+                                            binds: {},
+                                            env: {}
+                                          })
       end
     end
   end

spec/service_spec.rb

@@ -20,4 +20,47 @@
 
     expect(s.name).to eq 'santa'
   end
+
+  describe '#start_docker_command' do
+    before do
+      allow(Kaiser::Config).to receive(:config).and_return({ networkname: 'testnet' })
+    end
+
+    it 'provides a proper docker command' do
+      s = Kaiser::Service.new('meow', 'santa', { image: 'np/santa:lol' })
+
+      expect(s.start_docker_command).to eq 'docker run -d --name meow-santa --network testnet np/santa:lol'
+    end
+
+    it 'provides a command with envs' do
+      s = Kaiser::Service.new('meow', 'santa', {
+                                image: 'np/santa:lol',
+                                env: {
+                                  'HELLO' => 'world'
+                                }
+                              })
+
+      expect(s.start_docker_command).to eq 'docker run -d --name meow-santa --network testnet -e HELLO=world np/santa:lol'
+    end
+
+    it 'provides a command with binds' do
+      s = Kaiser::Service.new('meow', 'santa', {
+                                image: 'np/santa:lol',
+                                binds: {
+                                  '/home/user' => '/home/inside/container'
+                                }
+                              })
+
+      expect(s.start_docker_command).to eq 'docker run -d --name meow-santa --network testnet -v /home/user:/home/inside/container np/santa:lol'
+    end
+
+    it 'provides a command with command' do
+      s = Kaiser::Service.new('meow', 'santa', {
+                                image: 'np/santa:lol',
+                                command: 'hohoho'
+                              })
+
+      expect(s.start_docker_command).to eq 'docker run -d --name meow-santa --network testnet np/santa:lol hohoho'
+    end
+  end
 end