Merge pull request #301 from EugenMayer/precondition_strategy

implemented precondition os based strategy, implemented brew being ma…

Gemfile.lock

@@ -1,11 +1,12 @@
 PATH
   remote: .
   specs:
-    docker-sync (0.2.3)
+    docker-sync (0.3.0)
       daemons (~> 1.2, >= 1.2.3)
       docker-compose (~> 1.0, >= 1.0.2)
       dotenv (~> 2.1, >= 2.1.1)
       gem_update_checker (~> 0.2.0, >= 0.2.0)
+      os
       terminal-notifier (= 1.6.3)
       thor (~> 0.19, >= 0.19.0)
 
@@ -15,10 +16,11 @@ GEM
     backticks (1.0.0)
     daemons (1.2.4)
     diff-lcs (1.3)
-    docker-compose (1.1.4)
+    docker-compose (1.1.5)
       backticks (~> 1.0)
     dotenv (2.2.0)
     gem_update_checker (0.2.0)
+    os (1.0.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -43,4 +45,4 @@ DEPENDENCIES
   rspec
 
 BUNDLED WITH
-   1.13.7
+   1.14.6

VERSION

@@ -1 +1 @@
-0.2.3
+0.3.0

docker-sync.gemspec

@@ -16,4 +16,5 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'terminal-notifier', '1.6.3'
   s.add_runtime_dependency 'dotenv', '~> 2.1', '>= 2.1.1'
   s.add_runtime_dependency 'daemons', '~> 1.2', '>= 1.2.3'
+  s.add_runtime_dependency 'os'
 end

docker_sync.iml

@@ -49,9 +49,10 @@
     <orderEntry type="library" scope="PROVIDED" name="bundler (v1.14.6, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="daemons (v1.2.4, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="diff-lcs (v1.3, rbenv: 2.2.4) [gem]" level="application" />
-    <orderEntry type="library" scope="PROVIDED" name="docker-compose (v1.1.4, rbenv: 2.2.4) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="docker-compose (v1.1.5, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="dotenv (v2.2.0, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="gem_update_checker (v0.2.0, rbenv: 2.2.4) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="os (v1.0.0, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rspec (v3.5.0, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rspec-core (v3.5.4, rbenv: 2.2.4) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rspec-expectations (v3.5.0, rbenv: 2.2.4) [gem]" level="application" />

lib/docker-sync.rb

@@ -1,4 +1,4 @@
 require 'docker-sync/config/config_locator'
 require 'docker-sync/config/global_config'
 require 'docker-sync/config/project_config'
-require 'docker-sync/preconditions'
+require 'docker-sync/preconditions/strategy'

lib/docker-sync/config/project_config.rb

@@ -48,6 +48,13 @@ def unison_required?
       }
     end
 
+    def rsync_required?
+      config['syncs'].any? { |name, sync_config|
+        sync_config['sync_strategy'] == 'rsync'
+      }
+    end
+
+
     private
 
       def validate_config!

lib/docker-sync/preconditions/preconditions_linux.rb

@@ -0,0 +1,24 @@
+module DockerSync
+  module Preconditions
+    class Linux
+      def check_all_preconditions(config)
+      end
+
+      def docker_available
+      end
+
+      def docker_running
+      end
+
+      def fswatch_available
+      end
+
+      def rsync_available
+      end
+
+      def unison_available
+      end
+    end
+
+  end
+end

lib/docker-sync/preconditions/preconditions_osx.rb

@@ -0,0 +1,148 @@
+require 'mkmf'
+module DockerSync
+  module Preconditions
+    class Osx
+      def check_all_preconditions(config)
+        return unless should_run_precondition?
+
+        docker_available
+        docker_running
+
+        if config.unison_required?
+          unison_available
+        end
+
+        if config.rsync_required?
+          rsync_available
+          fswatch_available
+        end
+      end
+
+      def docker_available
+        if (find_executable0 'docker').nil?
+          raise('Could not find docker binary in path. Please install it, e.g. using "brew install docker" or install docker-for-mac')
+        end
+      end
+
+      def docker_running
+        `docker ps`
+        if $?.exitstatus > 0
+          raise('No docker daemon seems to be running. Did you start your docker-for-mac / docker-machine?')
+        end
+      end
+
+      def rsync_available
+        if should_run_precondition?
+          if (find_executable0 'rsync').nil?
+            raise('Could not find rsync binary in path. Please install it, e.g. using "brew install rsync"')
+          end
+        end
+      end
+
+      def unison_available
+        if should_run_precondition?
+          if (find_executable0 'unison').nil?
+            cmd1 = 'brew install unison"'
+
+            Thor::Shell::Basic.new.say_status 'warning', 'Could not find unison binary in $PATH. Trying to install now', :red
+            if Thor::Shell::Basic.new.yes?('I will install unison using brew for you? (y/N)')
+              system cmd1
+            else
+              raise('Please install it yourself using: brew install unison')
+            end
+          end
+
+          unox_available
+        end
+      end
+
+      def fswatch_available
+        if should_run_precondition?
+          if (find_executable0 'fswatch').nil?
+            cmd1 = 'brew install fswatch"'
+
+            Thor::Shell::Basic.new.say_status 'warning', 'No fswatch available. Install it by "brew install fswatch Trying to install now', :red
+            if Thor::Shell::Basic.new.yes?('I will install fswatch using brew for you? (y/N)')
+              system cmd1
+            else
+              raise('Please install it yourself using: brew install fswatch')
+            end
+          end
+        end
+
+      end
+
+      private
+
+      def should_run_precondition?(silent = false)
+        unless has_brew?
+          Thor::Shell::Basic.new.say_status 'inf', 'Not running any precondition checks since you have no brew and that is unsupported. Is all up to you know.', :white unless silent
+          return false
+        end
+        return true
+      end
+
+      def has_brew?
+        return find_executable0 'brew'
+      end
+
+
+      def unox_available
+        if should_run_precondition?
+          `brew list unox`
+          if $?.exitstatus > 0
+            unless (find_executable0 'unison-fsmonitor').nil?
+              # unox installed, but not using brew, we do not allow that anymore
+              Thor::Shell::Basic.new.say_status 'error', 'You install unison-fsmonitor (unox) not using brew. Please uninstall it and run docker-sync again, so we can install it for you', :red
+              exit 1
+            end
+            cmd1 = 'brew tap eugenmayer/dockersync && brew install eugenmayer/dockersync/unox'
+
+            Thor::Shell::Basic.new.say_status 'warning', 'Could not find unison-fsmonitor (unox) binary in $PATH. Trying to install now', :red
+            if Thor::Shell::Basic.new.yes?('I will install unox through brew for you? (y/N)')
+              system cmd1
+            else
+              raise('Please install it yourself using: brew tap eugenmayer/dockersync && brew install unox')
+            end
+          end
+        end
+      end
+
+      def install_pip(package, test = nil)
+        test ? `python -c 'import #{test}'` : `python -c 'import #{package}'`
+
+        unless $?.success?
+          Thor::Shell::Basic.new.say_status 'warning', "Could not find #{package}. Will try to install it using pip", :red
+          if find_executable0('python') == '/usr/bin/python'
+            Thor::Shell::Basic.new.say_status 'ok', 'You seem to use the system python, we will need sudo below'
+            sudo = true
+            cmd2 = "sudo easy_install pip && sudo pip install #{package}"
+          else
+            Thor::Shell::Basic.new.say_status 'ok', 'You seem to have a custom python, using non-sudo commands'
+            sudo = false
+            cmd2 = "easy_install pip && pip install #{package}"
+          end
+          if sudo
+            question = "I will ask you for you root password to install #{package} by running (This will ask for sudo, since we use the system python)"
+          else
+            question = "I will now install #{package} for you by running"
+          end
+
+          Thor::Shell::Basic.new.say_status 'info', "#{question}: `#{cmd2}\n\n"
+          if Thor::Shell::Basic.new.yes?('Shall I continue? (y/N)')
+            system cmd2
+            if $?.exitstatus > 0
+              raise("Failed to install #{package}, please file an issue with the output of the error")
+            end
+            test ? `python -c 'import #{test}'` : `python -c 'import #{package}'`
+            unless $?.success?
+              raise("Somehow I could not successfully install #{package} even though I tried. Please report this issue.")
+            end
+          else
+            raise("Please install #{package} manually, see https://github.com/EugenMayer/docker-sync/wiki/1.-Installation")
+          end
+        end
+      end
+    end
+  end
+end