mirror of
https://github.com/mongodb/mongo.git
synced 2024-11-30 17:10:48 +01:00
376 lines
12 KiB
C++
376 lines
12 KiB
C++
// dbwebserver.cpp
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/**
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* Copyright (C) 2008 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "stdafx.h"
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#include "../util/miniwebserver.h"
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#include "db.h"
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#include "repl.h"
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#include "replset.h"
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#include "instance.h"
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#include "security.h"
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namespace mongo {
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extern int port;
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extern const char *replInfo;
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bool getInitialSyncCompleted();
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time_t started = time(0);
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/*
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string toString() {
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stringstream ss;
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unsigned long long dt = last - start;
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ss << dt/1000;
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ss << '\t';
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ss << timeLocked/1000 << '\t';
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if( dt )
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ss << (timeLocked*100)/dt << '%';
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return ss.str();
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}
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*/
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struct Timing {
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Timing() {
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start = timeLocked = 0;
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}
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unsigned long long start, timeLocked;
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};
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Timing tlast;
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const int NStats = 32;
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string lockStats[NStats];
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unsigned q = 0;
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extern bool cpu;
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void statsThread() {
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unsigned long long timeLastPass = 0;
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while ( 1 ) {
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{
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Timer lktm;
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dblock lk;
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q = (q+1)%NStats;
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Timing timing;
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dbMutexInfo.timingInfo(timing.start, timing.timeLocked);
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unsigned long long now = curTimeMicros64();
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if ( timeLastPass ) {
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unsigned long long dt = now - timeLastPass;
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unsigned long long dlocked = timing.timeLocked - tlast.timeLocked;
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{
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stringstream ss;
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ss << dt / 1000 << '\t';
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ss << dlocked / 1000 << '\t';
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if ( dt )
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ss << (dlocked*100)/dt << '%';
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string s = ss.str();
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if ( cpu )
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log() << "cpu: " << s << endl;
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lockStats[q] = s;
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}
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}
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timeLastPass = now;
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tlast = timing;
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}
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sleepsecs(4);
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}
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}
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unsigned byLocSize();
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bool _bold;
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string bold(bool x) {
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_bold = x;
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return x ? "<b>" : "";
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}
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string bold() {
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return _bold ? "</b>" : "";
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}
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class DbWebServer : public MiniWebServer {
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public:
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// caller locks
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void doLockedStuff(stringstream& ss) {
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ss << "# databases: " << databases.size() << '\n';
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if ( database ) {
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ss << "curclient: " << database->name;
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ss << '\n';
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}
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ss << bold(byLocSize()>10000) << "Cursors byLoc.size(): " << byLocSize() << bold() << '\n';
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ss << "\n<b>replication</b>\n";
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ss << "master: " << master << '\n';
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ss << "slave: " << slave << '\n';
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if ( replPair ) {
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ss << "replpair:\n";
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ss << replPair->getInfo();
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}
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bool seemCaughtUp = getInitialSyncCompleted();
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if ( !seemCaughtUp ) ss << "<b>";
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ss << "initialSyncCompleted: " << seemCaughtUp;
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if ( !seemCaughtUp ) ss << "</b>";
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ss << '\n';
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ss << "\n<b>dt\ttlocked</b>\n";
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unsigned i = q;
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while ( 1 ) {
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ss << lockStats[i] << '\n';
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i = (i-1)%NStats;
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if ( i == q )
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break;
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}
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}
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void doUnlockedStuff(stringstream& ss) {
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ss << "port: " << port << '\n';
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ss << "dblocked: " << dbMutexInfo.isLocked() << " (initial)\n";
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ss << "uptime: " << time(0)-started << " seconds\n";
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if ( allDead )
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ss << "<b>replication allDead=" << allDead << "</b>\n";
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ss << "\nassertions:\n";
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for ( int i = 0; i < 4; i++ ) {
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if ( lastAssert[i].isSet() ) {
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ss << "<b>";
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if ( i == 3 ) ss << "usererr";
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else ss << i;
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ss << "</b>" << ' ' << lastAssert[i].toString();
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}
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}
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ss << "\nreplInfo: " << replInfo << '\n';
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}
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virtual void doRequest(
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const char *rq, // the full request
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string url,
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// set these and return them:
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string& responseMsg,
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int& responseCode,
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vector<string>& headers // if completely empty, content-type: text/html will be added
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)
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{
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//out() << "url [" << url << "]" << endl;
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if ( url.size() > 1 ) {
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handleRESTRequest( rq , url , responseMsg , responseCode , headers );
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return;
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}
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responseCode = 200;
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stringstream ss;
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ss << "<html><head><title>";
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string dbname;
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{
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stringstream z;
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z << "db " << getHostName() << ':' << port << ' ';
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dbname = z.str();
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}
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ss << dbname << "</title></head><body><h2>" << dbname << "</h2><p>\n<pre>";
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doUnlockedStuff(ss);
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int n = 2000;
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Timer t;
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while ( 1 ) {
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if ( !dbMutexInfo.isLocked() ) {
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{
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dblock lk;
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ss << "time to get dblock: " << t.millis() << "ms\n";
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doLockedStuff(ss);
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}
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break;
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}
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sleepmillis(1);
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if ( --n < 0 ) {
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ss << "\n<b>timed out getting dblock</b>\n";
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break;
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}
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}
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ss << "</pre></body></html>";
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responseMsg = ss.str();
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}
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void handleRESTRequest( const char *rq, // the full request
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string url,
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string& responseMsg,
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int& responseCode,
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vector<string>& headers // if completely empty, content-type: text/html will be added
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) {
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string::size_type first = url.find( "/" , 1 );
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if ( first == string::npos ) {
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responseCode = 400;
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return;
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}
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string method = parseMethod( rq );
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string dbname = url.substr( 1 , first - 1 );
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string coll = url.substr( first + 1 );
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string action = "";
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map<string,string> params;
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if ( coll.find( "?" ) != string::npos ) {
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parseParams( params , coll.substr( coll.find( "?" ) + 1 ) );
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coll = coll.substr( 0 , coll.find( "?" ) );
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}
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string::size_type last = coll.find_last_of( "/" );
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if ( last == string::npos ) {
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action = coll;
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coll = "_defaultCollection";
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}
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else {
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action = coll.substr( last + 1 );
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coll = coll.substr( 0 , last );
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}
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for ( string::size_type i=0; i<coll.size(); i++ )
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if ( coll[i] == '/' )
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coll[i] = '.';
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string fullns = dbname + "." + coll;
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headers.push_back( (string)"x-action: " + action );
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headers.push_back( (string)"x-ns: " + fullns );
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headers.push_back( "Content-Type: text/plain;charset=utf-8" );
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stringstream ss;
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if ( method == "GET" ) {
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responseCode = 200;
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handleRESTQuery( fullns , action , params , responseCode , ss );
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}
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else if ( method == "POST" ) {
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responseCode = 201;
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handlePost( fullns , body( rq ) , params , responseCode , ss );
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}
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else {
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responseCode = 400;
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headers.push_back( "X_err: bad request" );
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ss << "don't know how to handle a [" << method << "]";
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out() << "don't know how to handle a [" << method << "]" << endl;
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}
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responseMsg = ss.str();
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}
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void handleRESTQuery( string ns , string action , map<string,string> & params , int & responseCode , stringstream & out ) {
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Timer t;
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int skip = _getOption( params["skip"] , 0 );
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int num = _getOption( params["limit"] , _getOption( params["count" ] , 1000 ) ); // count is old, limit is new
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int one = 0;
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if ( params["one"].size() > 0 && tolower( params["one"][0] ) == 't' ) {
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num = 1;
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one = 1;
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}
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BSONObjBuilder queryBuilder;
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for ( map<string,string>::iterator i = params.begin(); i != params.end(); i++ ) {
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if ( ! i->first.find( "filter_" ) == 0 )
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continue;
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const char * field = i->first.substr( 7 ).c_str();
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const char * val = i->second.c_str();
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char * temp;
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// TODO: this is how i guess if something is a number. pretty lame right now
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double number = strtod( val , &temp );
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if ( temp != val )
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queryBuilder.append( field , number );
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else
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queryBuilder.append( field , val );
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}
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BSONObj query = queryBuilder.doneAndDecouple();
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auto_ptr<DBClientCursor> cursor = db.query( ns.c_str() , query, num , skip );
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if ( one ) {
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if ( cursor->more() ) {
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BSONObj obj = cursor->next();
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out << obj.jsonString() << "\n";
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}
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else {
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responseCode = 404;
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}
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return;
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}
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out << "{\n";
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out << " \"offset\" : " << skip << ",\n";
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out << " \"rows\": [\n";
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int howMany = 0;
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while ( cursor->more() ) {
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if ( howMany++ )
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out << " ,\n";
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BSONObj obj = cursor->next();
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out << " " << obj.jsonString();
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}
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out << "\n ]\n\n";
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out << " \"total_rows\" : " << howMany << " ,\n";
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out << " \"query\" : " << query.jsonString() << " ,\n";
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out << " \"millis\" : " << t.millis() << " ,\n";
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out << "}\n";
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}
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// TODO Generate id and revision per couch POST spec
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void handlePost( string ns, const char *body, map<string,string> & params, int & responseCode, stringstream & out ) {
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try {
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BSONObj obj = fromjson( body );
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db.insert( ns.c_str(), obj );
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} catch ( ... ) {
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responseCode = 400; // Bad Request. Seems reasonable for now.
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out << "{ \"ok\" : false }";
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return;
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}
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responseCode = 201;
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out << "{ \"ok\" : true }";
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}
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int _getOption( string val , int def ) {
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if ( val.size() == 0 )
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return def;
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return atoi( val.c_str() );
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}
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private:
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static DBDirectClient db;
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};
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DBDirectClient DbWebServer::db;
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void webServerThread() {
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boost::thread thr(statsThread);
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AuthenticationInfo *ai = new AuthenticationInfo();
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authInfo.reset(ai);
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DbWebServer mini;
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if ( mini.init(port+1000) )
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mini.run();
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}
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} // namespace mongo
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