{"action":"created","comment":{"url":"https://api.github.com/repos/paritytech/polkadot/pulls/comments/196346965","pull_request_review_id":129878913,"id":196346965,"node_id":"MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDE5NjM0Njk2NQ==","diff_hunk":"@@ -0,0 +1,114 @@\n+// Copyright 2017 Parity Technologies (UK) Ltd.\n+// This file is part of Polkadot.\n+\n+// Polkadot is free software: you can redistribute it and/or modify\n+// it under the terms of the GNU General Public License as published by\n+// the Free Software Foundation, either version 3 of the License, or\n+// (at your option) any later version.\n+\n+// Polkadot is distributed in the hope that it will be useful,\n+// but WITHOUT ANY WARRANTY; without even the implied warranty of\n+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n+// GNU General Public License for more details.\n+\n+// You should have received a copy of the GNU General Public License\n+// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.\n+\n+//! Telemtetry utils.\n+//! \n+//! `telemetry` macro be used from whereever in the Polkadot codebase\n+//! in order to send real-time logging information to the telemetry\n+//! server (if there is one). We use the async drain adapter of `slog`\n+//! so that the logging thread doesn't get held up at all.\n+\n+extern crate parking_lot;\n+extern crate websocket as ws;\n+extern crate slog_async;\n+extern crate slog_json;\n+#[macro_use(o, kv)]\n+extern crate slog;\n+extern crate slog_scope;\n+\n+use std::io;\n+use parking_lot::Mutex;\n+use slog::Drain;\n+pub use slog_scope::with_logger;\n+\n+/// Configuration for telemetry.\n+pub struct TelemetryConfig {\n+\t/// URL of the telemetry WS server.\n+\tpub url: String,\n+\t/// What do do when we connect to the server.\n+\tpub on_connect: Box<Fn() + Send + 'static>,\n+}\n+\n+/// Initialise telemetry.\n+pub fn init_telemetry(config: TelemetryConfig) -> slog_scope::GlobalLoggerGuard {\n+\tlet log = slog::Logger::root(\n+\t\tslog_async::Async::new(\n+\t\t\tslog_json::Json::default(\n+\t\t\t\tTelemetryWriter {\n+\t\t\t\t\tbuffer: vec![],\n+\t\t\t\t\tout: Mutex::new(\n+\t\t\t\t\t\tws::ClientBuilder::new(&config.url).ok().and_then(|mut x| x.connect(None).ok())\n+\t\t\t\t\t),\n+\t\t\t\t\tconfig,\n+\t\t\t\t\tfirst_time: true,\t// ensures that on_connect will be called.\n+\t\t\t\t}\n+\t\t\t).fuse()\n+\t\t).build().fuse(), o!()\n+\t);\n+\tslog_scope::set_global_logger(log)\n+}\n+\n+/// Exactly equivalent to `slog_scope::info`, provided as a convenience.\n+#[macro_export]\n+macro_rules! telemetry {\n+\t( $($t:tt)* ) => { $crate::with_logger(|l| slog_info!(l, $($t)* )) }\n+}\n+\n+struct TelemetryWriter {\n+\tbuffer: Vec<u8>,\n+\tout: Mutex<Option<ws::sync::Client<Box<ws::stream::sync::NetworkStream + Send>>>>,\n+\tconfig: TelemetryConfig,\n+\tfirst_time: bool,\n+}\n+\n+impl TelemetryWriter {\n+\tfn ensure_connected(&mut self) {\n+\t\tif self.first_time {\n+\t\t\t(self.config.on_connect)();\n+\t\t\tself.first_time = false;\n+\t\t}\n+\t\tlet mut client = self.out.lock();\n+\t\tif client.is_none() {\n+\t\t\t*client = ws::ClientBuilder::new(&self.config.url).ok().and_then(|mut x| x.connect(None).ok());\n+\t\t\tdrop(client);\n+\t\t\t(self.config.on_connect)();\n+\t\t}\n+\t}\n+}\n+\n+impl io::Write for TelemetryWriter {\n+\tfn write(&mut self, msg: &[u8]) -> io::Result<usize> {\n+\t\tif msg == b\"\\n\" {\n+\t\t\tlet _ = self.flush();\n+\t\t} else {\n+\t\t\tself.buffer.extend_from_slice(msg);\n+\t\t}\n+\t\tOk(msg.len())\n+\t}\n+\n+\tfn flush(&mut self) -> io::Result<()> {\n+\t\tself.ensure_connected();\n+\t\tif if let Some(ref mut socket) = *self.out.lock() {","path":"polkadot/telemetry/src/lib.rs","position":104,"original_position":104,"commit_id":"1e58c8ede51a8e8a1850ee73e01bd6152655c2e7","original_commit_id":"80aadf1920624f92fb50459ba6be14444ede9e21","user":{"login":"gavofyork","id":138296,"node_id":"MDQ6VXNlcjEzODI5Ng==","avatar_url":"https://avatars0.githubusercontent.com/u/138296?v=4","gravatar_id":"","url":"https://api.github.com/users/gavofyork","html_url":"https://github.com/gavofyork","followers_url":"https://api.github.com/users/gavofyork/followers","following_url":"https://api.github.com/users/gavofyork/following{/other_user}","gists_url":"https://api.github.com/users/gavofyork/gists{/gist_id}","starred_url":"https://api.github.com/users/gavofyork/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gavofyork/subscriptions","organizations_url":"https://api.github.com/users/gavofyork/orgs","repos_url":"https://api.github.com/users/gavofyork/repos","events_url":"https://api.github.com/users/gavofyork/events{/privacy}","received_events_url":"https://api.github.com/users/gavofyork/received_events","type":"User","site_admin":false},"body":"i tried, but get lifetime errors between closures since the `Some` is on a `&mut` within the `MutexGuard`. feel free to try yourself.","created_at":"2018-06-19T09:05:38Z","updated_at":"2018-06-19T09:05:38Z","html_url":"https://github.com/paritytech/polkadot/pull/217#discussion_r196346965","pull_request_url":"https://api.github.com/repos/paritytech/polkadot/pulls/217","author_association":"MEMBER","_links":{"self":{"href":"https://api.github.com/repos/paritytech/polkadot/pulls/comments/196346965"},"html":{"href":"https://github.com/paritytech/polkadot/pull/217#discussion_r196346965"},"pull_request":{"href":"https://api.github.com/repos/paritytech/polkadot/pulls/217"}},"in_reply_to_id":195938927},"pull_request":{"url":"https://api.github.com/repos/paritytech/polkadot/pulls/217","id":194844191,"node_id":"MDExOlB1bGxSZXF1ZXN0MTk0ODQ0MTkx","html_url":"https://github.com/paritytech/polkadot/pull/217","diff_url":"https://github.com/paritytech/polkadot/pull/217.diff","patch_url":"https://github.com/paritytech/polkadot/pull/217.patch","issue_url":"https://api.github.com/repos/paritytech/polkadot/issues/217","number":217,"state":"open","locked":false,"title":"Telemetry (Slog + WS)","user":{"login":"gavofyork","id":138296,"node_id":"MDQ6VXNlcjEzODI5Ng==","avatar_url":"https://avatars0.githubusercontent.com/u/138296?v=4","gravatar_id":"","url":"https://api.github.com/users/gavofyork","html_url":"https://github.com/gavofyork","followers_url":"https://api.github.com/users/gavofyork/followers","following_url":"https://api.github.com/users/gavofyork/following{/other_user}","gists_url":"https://api.github.com/users/gavofyork/gists{/gist_id}","starred_url":"https://api.github.com/users/gavofyork/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gavofyork/subscriptions","organizations_url":"https://api.github.com/users/gavofyork/orgs","repos_url":"https://api.github.com/users/gavofyork/repos","events_url":"https://api.github.com/users/gavofyork/events{/privacy}","received_events_url":"https://api.github.com/users/gavofyork/received_events","type":"User","site_admin":false},"body":"Built on #195 \r\nCloses #90\r\n\r\nUse `polkadot --name \"My node's name!\" -t --telemetry-url ws(s)://endpoint.server.org/whatever`\r\n\r\nExample output using `lscat -l 1024`:\r\n\r\n```\r\nclient connected\r\n< {\"msg\":\"node.start\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:49.366785+02:00\",\"best\":\"eebca090071749085a9772ca5e53fd6588a0aabc059fc89dcd889a6e8aa4fc80\",\"height\":527}\r\n< {\"msg\":\"system.connected\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:49.367580+02:00\",\"chain\":\"dev\",\"config\":\"\",\"version\":\"0.2.0\",\"implementation\":\"parity-polkadot\",\"name\":\"Sixty-nine\"}\r\n< {\"msg\":\"system.interval\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:49.432878+02:00\",\"txcount\":0,\"best\":\"eebca090071749085a9772ca5e53fd6588a0aabc059fc89dcd889a6e8aa4fc80\",\"height\":527,\"peers\":0,\"status\":\"Idle\"}\r\n< {\"msg\":\"system.interval\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:54.428424+02:00\",\"txcount\":0,\"best\":\"eebca090071749085a9772ca5e53fd6588a0aabc059fc89dcd889a6e8aa4fc80\",\"height\":527,\"peers\":0,\"status\":\"Idle\"}\r\n< {\"msg\":\"system.interval\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:59.429129+02:00\",\"txcount\":0,\"best\":\"eebca090071749085a9772ca5e53fd6588a0aabc059fc89dcd889a6e8aa4fc80\",\"height\":527,\"peers\":0,\"status\":\"Idle\"}\r\n< {\"msg\":\"block.import\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:32:59.731706+02:00\",\"best\":\"0e4253d2876c08a35f12bcb569acdfa16f1e82bd99949423b5a048e164e51221\",\"height\":528}\r\n< {\"msg\":\"system.interval\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:33:04.428447+02:00\",\"txcount\":0,\"best\":\"0e4253d2876c08a35f12bcb569acdfa16f1e82bd99949423b5a048e164e51221\",\"height\":528,\"peers\":0,\"status\":\"Idle\"}\r\n< {\"msg\":\"block.import\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:33:05.027001+02:00\",\"best\":\"4f865ff3a38da50af7506d8b82b7773a8aa8979005a70234291c83b33fd18e8c\",\"height\":529}\r\n< {\"msg\":\"system.interval\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:33:09.432264+02:00\",\"txcount\":0,\"best\":\"4f865ff3a38da50af7506d8b82b7773a8aa8979005a70234291c83b33fd18e8c\",\"height\":529,\"peers\":0,\"status\":\"Idle\"}\r\n< {\"msg\":\"block.import\",\"level\":\"INFO\",\"ts\":\"2018-06-15T23:33:10.324716+02:00\",\"best\":\"7848ca4c6918eaf3c6b9a7a1f500c56e02c0b0c2e9a6e416caf71e79b47b2d9b\",\"height\":530}\r\n```\r\n\r\nStill todo:\r\n\r\n- [x] CLI configurable server address\r\n- [x] Auto-reconnect\r\n- [x] Slog front-end\r\n- [x] Human-readable node name\r\n- [x] Additional logging points:\r\n  - [x] `transaction-pool/{submit, import, cull}`\r\n  - `consensus/next-round` Another PR as/when needed\r\n  - `network/{connect, disconnect}` Another PR as/when needed\r\n  - [x] Heartbeat (informant-style best block/peers/transactions/sync-status)\r\n","created_at":"2018-06-14T10:15:46Z","updated_at":"2018-06-19T09:05:38Z","closed_at":null,"merged_at":null,"merge_commit_sha":"9708490f85d3af95a54c39f8f03ac6d1da16fd05","assignee":null,"assignees":[],"requested_reviewers":[],"requested_teams":[],"labels":[{"id":746560607,"node_id":"MDU6TGFiZWw3NDY1NjA2MDc=","url":"https://api.github.com/repos/paritytech/polkadot/labels/A0-pleasereview","name":"A0-pleasereview","color":"666666","default":false}],"milestone":{"url":"https://api.github.com/repos/paritytech/polkadot/milestones/2","html_url":"https://github.com/paritytech/polkadot/milestone/2","labels_url":"https://api.github.com/repos/paritytech/polkadot/milestones/2/labels","id":3249701,"node_id":"MDk6TWlsZXN0b25lMzI0OTcwMQ==","number":2,"title":"PoC-2 (Co-finalisation)","description":"- Initial parachain consensus.\r\n- Basic parachain STF/validity function.\r\n- Telemetry\r\n- Slashing\r\n- Maybe: 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