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However a close() could have happened between the get() and this set\n+          if (!internalChannelRef.compareAndSet(old, newInternalClient)) {\n+            // close the newly created client we've been shutdown\n+            ChannelUtils.close(newInternalClient)\n+          }\n+        }\n+      case Failure(_) =>\n+        close()\n+      case _ =>\n+      // let all other exceptions and success through\n+    }\n+    c\n+  }\n+}\n+/**\n+ * INTERNAL API\n+ * Used from generated code so can't be private.\n+ *\n+ * Thrown if a withChannel call is called after closing the internal channel\n+ */\n+@InternalApi\n+class ClientClosedException() extends RuntimeException(\"withChannel called after close()\")","path":"runtime/src/main/scala/akka/grpc/internal/ClientState.scala","position":102,"original_position":102,"commit_id":"c97dd7968caac17cefccd8109df5e54868fb3566","original_commit_id":"c97dd7968caac17cefccd8109df5e54868fb3566","user":{"login":"dwijnand","id":344610,"node_id":"MDQ6VXNlcjM0NDYxMA==","avatar_url":"https://avatars1.githubusercontent.com/u/344610?v=4","gravatar_id":"","url":"https://api.github.com/users/dwijnand","html_url":"https://github.com/dwijnand","followers_url":"https://api.github.com/users/dwijnand/followers","following_url":"https://api.github.com/users/dwijnand/following{/other_user}","gists_url":"https://api.github.com/users/dwijnand/gists{/gist_id}","starred_url":"https://api.github.com/users/dwijnand/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dwijnand/subscriptions","organizations_url":"https://api.github.com/users/dwijnand/orgs","repos_url":"https://api.github.com/users/dwijnand/repos","events_url":"https://api.github.com/users/dwijnand/events{/privacy}","received_events_url":"https://api.github.com/users/dwijnand/received_events","type":"User","site_admin":false},"body":"```suggestion\r\nfinal class ClientClosedException() extends RuntimeException(\"withChannel called after close()\")\r\n```","created_at":"2018-11-08T16:03:30Z","updated_at":"2018-11-08T16:22:21Z","html_url":"https://github.com/akka/akka-grpc/pull/449#discussion_r231948726","pull_request_url":"https://api.github.com/repos/akka/akka-grpc/pulls/449","author_association":"MEMBER","_links":{"self":{"href":"https://api.github.com/repos/akka/akka-grpc/pulls/comments/231948726"},"html":{"href":"https://github.com/akka/akka-grpc/pull/449#discussion_r231948726"},"pull_request":{"href":"https://api.github.com/repos/akka/akka-grpc/pulls/449"}}},"pull_request":{"url":"https://api.github.com/repos/akka/akka-grpc/pulls/449","id":227675196,"node_id":"MDExOlB1bGxSZXF1ZXN0MjI3Njc1MTk2","html_url":"https://github.com/akka/akka-grpc/pull/449","diff_url":"https://github.com/akka/akka-grpc/pull/449.diff","patch_url":"https://github.com/akka/akka-grpc/pull/449.patch","issue_url":"https://api.github.com/repos/akka/akka-grpc/issues/449","number":449,"state":"open","locked":false,"title":"[WIP] Replace RestartingClient with an always-restart ClientState","user":{"login":"ignasi35","id":762126,"node_id":"MDQ6VXNlcjc2MjEyNg==","avatar_url":"https://avatars2.githubusercontent.com/u/762126?v=4","gravatar_id":"","url":"https://api.github.com/users/ignasi35","html_url":"https://github.com/ignasi35","followers_url":"https://api.github.com/users/ignasi35/followers","following_url":"https://api.github.com/users/ignasi35/following{/other_user}","gists_url":"https://api.github.com/users/ignasi35/gists{/gist_id}","starred_url":"https://api.github.com/users/ignasi35/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ignasi35/subscriptions","organizations_url":"https://api.github.com/users/ignasi35/orgs","repos_url":"https://api.github.com/users/ignasi35/repos","events_url":"https://api.github.com/users/ignasi35/events{/privacy}","received_events_url":"https://api.github.com/users/ignasi35/received_events","type":"User","site_admin":false},"body":"Supersedes #440 and #442\r\n\r\nRemoves `RestartingClient` moving its code into the new internal `ClientState` which also takes over the control of the lifecycle of `Channel`. This way using _restarting_ is no longer opt-in but enabled by default in all generated clients. \r\n\r\n`ClientState` provides the `withChannel` which behaves like `RestartingClient#withClient`: it produces a new `Channel` instance whenever the current one was prematurely closed. Invoking `close()` on the `clientState` will prevent new instance creation. \r\n\r\nAlso, moving `internalChannel` and other fields out of the generated code makes the generated code smaller. 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