{"action":"created","comment":{"url":"https://api.github.com/repos/pingcap/tikv/pulls/comments/83190078","pull_request_review_id":4047518,"id":83190078,"diff_hunk":"@@ -0,0 +1,184 @@\n+// Copyright 2016 PingCAP, Inc.\n+//\n+// Licensed under the Apache License, Version 2.0 (the \"License\");\n+// you may not use this file except in compliance with the License.\n+// You may obtain a copy of the License at\n+//\n+//     http://www.apache.org/licenses/LICENSE-2.0\n+//\n+// Unless required by applicable law or agreed to in writing, software\n+// distributed under the License is distributed on an \"AS IS\" BASIS,\n+// See the License for the specific language governing permissions and\n+// limitations under the License.\n+\n+#![feature(plugin)]\n+#![cfg_attr(feature = \"dev\", plugin(clippy))]\n+\n+extern crate tikv;\n+extern crate clap;\n+extern crate protobuf;\n+extern crate kvproto;\n+extern crate rocksdb;\n+\n+use std::{str, u64};\n+use clap::{Arg, App, SubCommand};\n+use protobuf::Message;\n+use kvproto::raft_cmdpb::RaftCmdRequest;\n+use kvproto::raft_serverpb::{RaftLocalState, RegionLocalState, RaftApplyState};\n+use kvproto::eraftpb::Entry;\n+use rocksdb::DB;\n+use tikv::util::{self, escape, unescape};\n+use tikv::raftstore::store::keys;\n+use tikv::raftstore::store::engine::{Peekable, Iterable};\n+use tikv::storage::ALL_CFS;\n+use tikv::storage::CF_RAFT;\n+\n+static VERSION: &'static str = \"0.0.1\";\n+\n+fn main() {\n+    let matches = App::new(\"tikv\")\n+        .version(VERSION)\n+        .author(\"PingCAP\")\n+        .about(\"Distributed transactional key value database powered by Rust and Raft\")\n+        .arg(Arg::with_name(\"db\")\n+             .short(\"d\")\n+             .takes_value(true)\n+             .help(\"set rocksdb path, required\"))\n+        .subcommand(SubCommand::with_name(\"raft\")\n+                    .about(\"print raft log entry\")\n+                    .version(VERSION)\n+                    .author(\"Ivan ivanyang@pingcap.com\")\n+                    .arg(Arg::with_name(\"region\")\n+                         .short(\"r\")\n+                         .takes_value(true)\n+                         .help(\"set the region id, required when get raft message\"))\n+                    .arg(Arg::with_name(\"index\")\n+                         .short(\"i\")\n+                         .takes_value(true)\n+                         .help(\"set the raft log index\")))\n+        .subcommand(SubCommand::with_name(\"region\")\n+                    .about(\"print region info\")\n+                    .version(VERSION)\n+                    .author(\"Ivan ivanyang@pingcap.com\")\n+                    .arg(Arg::with_name(\"region\")\n+                         .short(\"r\")\n+                         .takes_value(true)\n+                         .help(\"set the region id\")))\n+        .subcommand(SubCommand::with_name(\"raw\")\n+                    .about(\"print the raw node value\")\n+                    .version(VERSION)\n+                    .author(\"ivan ivanyang@pingcap.com\")\n+                    .arg(Arg::with_name(\"cf\")\n+                         .short(\"c\")\n+                         .takes_value(true)\n+                         .help(\"column family name, only aviable for dump-range\"))\n+                    .arg(Arg::with_name(\"key\")\n+                         .short(\"k\")\n+                         .takes_value(true)\n+                         .help(\"set the query raw key, in escaped form\")))\n+        .subcommand(SubCommand::with_name(\"range\")\n+                    .about(\"print the range db range\")\n+                    .version(VERSION)\n+                    .author(\"Ivan ivanyang@pingcap.com\")\n+                    .arg(Arg::with_name(\"from\")\n+                         .short(\"f\")\n+                         .takes_value(true)\n+                         .help(\"set the scan from raw key, in escaped format\"))\n+                    .arg(Arg::with_name(\"to\")\n+                         .short(\"t\")\n+                         .takes_value(true)\n+                         .help(\"set the scan end raw key, in escaped format\"))\n+                    .arg(Arg::with_name(\"limit\")\n+                         .short(\"l\")\n+                         .takes_value(true)\n+                         .help(\"set the scan limit\"))\n+                    .arg(Arg::with_name(\"cf\")\n+                         .short(\"c\")\n+                         .takes_value(true)\n+                         .help(\"column family name, only aviable for dump-range\")))\n+        .get_matches();\n+\n+    let db_path = matches.value_of(\"db\").unwrap();\n+    let db = util::rocksdb::open(db_path, ALL_CFS).unwrap();\n+    if let Some(matches) = matches.subcommand_matches(\"raw\") {\n+        let cf_name = matches.value_of(\"cf\").unwrap_or(\"default\");\n+        let key = String::from(matches.value_of(\"key\").unwrap());\n+        dump_raw_value(db, cf_name, key);\n+    } else if let Some(matches) = matches.subcommand_matches(\"raft\") {\n+        let region = String::from(matches.value_of(\"region\").unwrap());\n+        let index = String::from(matches.value_of(\"index\").unwrap());\n+        dump_raft_log_entry(db, region, index);\n+    } else if let Some(matches) = matches.subcommand_matches(\"region\") {\n+        let region = String::from(matches.value_of(\"region\").unwrap());\n+        dump_region_info(db, region);\n+    } else if let Some(matches) = matches.subcommand_matches(\"range\") {\n+        let from = String::from(matches.value_of(\"from\").unwrap());\n+        let to = matches.value_of(\"to\").map(|s| String::from(s));\n+        let limit = matches.value_of(\"limit\").map(|s| s.parse().unwrap());\n+        let cf_name = matches.value_of(\"cf\").unwrap_or(\"default\");\n+        dump_range(db, from, to, limit, cf_name);\n+    } else {\n+        panic!(\"currently only random key-value and raft log entry query are supported.\");\n+    }\n+\n+}\n+\n+fn dump_raw_value(db: DB, cf: &str, key: String) {\n+    let key = unescape(&key);\n+    let value = db.get_value_cf(cf, &key).unwrap();\n+    println!(\"value: {}\", value.map_or(\"None\".to_owned(), |v| escape(&v)));\n+}\n+\n+fn dump_raft_log_entry(db: DB, region_id_str: String, idx_str: String) {\n+    let region_id = u64::from_str_radix(&region_id_str, 10).unwrap();\n+    let idx = u64::from_str_radix(&idx_str, 10).unwrap();\n+\n+    let idx_key = keys::raft_log_key(region_id, idx);\n+    println!(\"idx_key: {}\", escape(&idx_key));\n+    let mut ent: Entry = db.get_msg_cf(CF_RAFT, &idx_key).unwrap().unwrap();\n+    let data = ent.take_data();\n+    println!(\"entry {:?}\", ent);\n+    let mut msg = RaftCmdRequest::new();\n+    msg.merge_from_bytes(&data).unwrap();\n+    println!(\"msg {:?}\", msg);\n+}\n+\n+fn dump_region_info(db: DB, region_id_str: String) {\n+    let region_id = u64::from_str_radix(&region_id_str, 10).unwrap();\n+\n+    let region_state_key = keys::region_state_key(region_id);\n+    println!(\"region state key: {}\", escape(&region_state_key));\n+    let region_state: Option<RegionLocalState> = db.get_msg(&region_state_key).unwrap();\n+    println!(\"region state: {:?}\", region_state);\n+\n+    let raft_state_key = keys::raft_state_key(region_id);\n+    println!(\"raft state key: {}\", escape(&raft_state_key));\n+    let raft_state: Option<RaftLocalState> = db.get_msg_cf(CF_RAFT, &raft_state_key).unwrap();\n+    println!(\"raft state: {:?}\", raft_state);\n+\n+    let apply_state_key = keys::apply_state_key(region_id);\n+    println!(\"apply state key: {}\", escape(&apply_state_key));\n+    let apply_state: Option<RaftApplyState> = db.get_msg_cf(CF_RAFT, &apply_state_key).unwrap();\n+    println!(\"apply state: {:?}\", apply_state);\n+}\n+\n+fn dump_range(db: DB, from: String, to: Option<String>, limit: Option<u64>, cf: &str) {\n+    let from = unescape(&from);\n+    let to = to.map_or_else(|| vec![0xff], |s| unescape(&s));","path":"src/bin/tikv-ctl.rs","position":167,"original_position":167,"commit_id":"19937009faf95bd6012339332e82f594549ea28e","original_commit_id":"19937009faf95bd6012339332e82f594549ea28e","user":{"login":"ngaut","id":878009,"avatar_url":"https://avatars.githubusercontent.com/u/878009?v=3","gravatar_id":"","url":"https://api.github.com/users/ngaut","html_url":"https://github.com/ngaut","followers_url":"https://api.github.com/users/ngaut/followers","following_url":"https://api.github.com/users/ngaut/following{/other_user}","gists_url":"https://api.github.com/users/ngaut/gists{/gist_id}","starred_url":"https://api.github.com/users/ngaut/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ngaut/subscriptions","organizations_url":"https://api.github.com/users/ngaut/orgs","repos_url":"https://api.github.com/users/ngaut/repos","events_url":"https://api.github.com/users/ngaut/events{/privacy}","received_events_url":"https://api.github.com/users/ngaut/received_events","type":"User","site_admin":false},"body":"Please use constant instead of hard coded 0xff.","created_at":"2016-10-13T10:53:17Z","updated_at":"2016-10-13T10:53:17Z","html_url":"https://github.com/pingcap/tikv/pull/1163#discussion_r83190078","pull_request_url":"https://api.github.com/repos/pingcap/tikv/pulls/1163","_links":{"self":{"href":"https://api.github.com/repos/pingcap/tikv/pulls/comments/83190078"},"html":{"href":"https://github.com/pingcap/tikv/pull/1163#discussion_r83190078"},"pull_request":{"href":"https://api.github.com/repos/pingcap/tikv/pulls/1163"}}},"pull_request":{"url":"https://api.github.com/repos/pingcap/tikv/pulls/1163","id":88947344,"html_url":"https://github.com/pingcap/tikv/pull/1163","diff_url":"https://github.com/pingcap/tikv/pull/1163.diff","patch_url":"https://github.com/pingcap/tikv/pull/1163.patch","issue_url":"https://api.github.com/repos/pingcap/tikv/issues/1163","number":1163,"state":"open","locked":false,"title":"add 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