General rewrite to support scales different than 1

src/commands/scale.cr

@@ -0,0 +1,85 @@
+module Faaso
+  module Commands
+    # Bring up one or more funkos by name.
+    #
+    # This doesn't guarantee that they will be running the latest
+    # version, and it will try to recicle paused and exited containers.
+    #
+    # If there is no other way, it will create a brand new container with
+    # the latest known image and start it.
+    #
+    # If there are no images for the funko, it will fail to bring it up.
+    struct Scale
+      def local(options, name, scale)
+        funko = Funko::Funko.from_names([name])[0]
+        # Asked about scale
+        if !scale
+          Log.info { "Funko #{name} has a scale of #{funko.scale}" }
+          return 0
+        end
+        # Asked to set scale
+        if funko.image_history.empty?
+          Log.error { "Error: no images available for #{funko.name}:latest" }
+          exit 1
+        end
+        funko.scale(scale.as(String).to_i)
+      end
+
+      def remote(options, name, scale)
+        if !scale
+          response = Crest.get(
+            "#{FAASO_SERVER}funkos/#{name}/scale/", \
+               user: "admin", password: "admin")
+        else
+          response = Crest.post(
+            "#{FAASO_SERVER}funkos/#{name}/scale/",
+            {"scale" => scale}, user: "admin", password: "admin")
+        end
+        body = JSON.parse(response.body)
+        Log.info { body["output"] }
+      rescue ex : Crest::InternalServerError
+        Log.error { "Error scaling funko #{name}" }
+        body = JSON.parse(ex.response.body)
+        Log.info { body["output"] }
+        exit 1
+      end
+
+      def run(options, name, scale)
+        if options["--local"]
+          return local(options, name, scale)
+        end
+        remote(options, name, scale)
+
+        #     case self
+        #     when .running?
+        #       # If it's already up, do nothing
+        #       # FIXME: bring back out-of-date warning
+        #       Log.info { "#{funko.name} is already up" }
+        #     when .paused?
+        #       # If it is paused, unpause it
+        #       Log.info { "Resuming existing paused container" }
+        #       funko.unpause
+        #     when .exited?
+        #       Log.info { "Starting function #{funko.name}" }
+        #       Log.info { "Restarting existing exited container" }
+        #       funko.start
+        #     else
+        #       # Only have an image, deploy from scratch
+        #       Faaso.setup_network # We need it
+        #       Log.info { "Creating and starting new container" }
+        #       funko.create_container(autostart: true)
+
+        #       (1..5).each { |_|
+        #         break if funko.running?
+        #         sleep 0.1.seconds
+        #       }
+        #       if !funko.running?
+        #         Log.warn { "Container for #{funko.name} is not running yet" }
+        #         next
+        #       end
+        #       Log.info { "Container for #{funko.name} is running" }
+        #     end
+      end
+    end
+  end
+end