Add initial support for watch.

Author: brendandburns

examples/watch/watch.rb

@@ -0,0 +1,25 @@
+# Copyright 2019 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'kubernetes'
+require 'pp'
+
+config = Kubernetes::Configuration.default_config()
+client = Kubernetes::ApiClient.new(config)
+
+watch = Kubernetes::Watch.new(client)
+
+watch.connect('/api/v1/namespaces') do |obj|
+    pp obj
+end

kubernetes/lib/kubernetes.rb

@@ -16,6 +16,7 @@
 require 'kubernetes/version'
 require 'kubernetes/configuration'
 require 'kubernetes/loader'
+require 'kubernetes/watch'
 
 # Configuration
 require 'kubernetes/config/error'

kubernetes/src/kubernetes/watch.rb

@@ -0,0 +1,41 @@
+# Copyright 2019 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'json'
+
+# The Kubernetes module encapsulates the Kubernetes client for Ruby
+module Kubernetes
+    class Watch
+        def initialize(client)
+            @client = client
+        end
+        
+        def connect(path, &block)
+            opts = {
+                :auth_names => ['BearerToken']
+            }
+            request = @client.build_request('GET', path + '?watch=true', opts)
+            request.on_body do |chunk|
+                parts = chunk.split(/\n/)
+                parts.each do |part|
+                    obj = JSON.parse(part)
+                    yield obj
+                end
+            end
+            response = request.run
+
+            pp response
+        end
+    end
+end