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/* commands.cpp
db "commands" (sent via db.$cmd.findOne(...))
*/
/* Copyright 2009 10gen Inc.
*
* 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.
*/
#include "pch.h"
#include "jsobj.h"
#include "commands.h"
#include "client.h"
#include "replpair.h"
namespace mongo {
map<string,Command*> * Command::_commandsByBestName;
map<string,Command*> * Command::_webCommands;
map<string,Command*> * Command::_commands;
void Command::htmlHelp(stringstream& ss) const {
string helpStr;
{
stringstream h;
help(h);
helpStr = h.str();
}
ss << "\n<tr><td>";
bool web = _webCommands->count(name) != 0;
if( web ) ss << "<a href=\"/" << name << "?text=1\">";
ss << name;
if( web ) ss << "</a>";
ss << "</td>\n";
ss << "<td>";
int l = locktype();
//if( l == NONE ) ss << "N ";
if( l == READ ) ss << "R ";
else if( l == WRITE ) ss << "W ";
if( slaveOk() )
ss << "S ";
if( adminOnly() )
ss << "A";
ss << "</td>";
ss << "<td>";
if( helpStr != "no help defined" ) {
const char *p = helpStr.c_str();
while( *p ) {
if( *p == '<' ) {
ss << "<";
p++; continue;
}
else if( *p == '{' )
ss << "<code>";
else if( *p == '}' ) {
ss << "}</code>";
p++;
continue;
}
if( strncmp(p, "http:", 5) == 0 ) {
ss << "<a href=\"";
const char *q = p;
while( *q && *q != ' ' && *q != '\n' )
ss << *q++;
ss << "\">";
q = p;
if( startsWith(q, "http://www.mongodb.org/display/") )
q += 31;
while( *q && *q != ' ' && *q != '\n' ) {
ss << (*q == '+' ? ' ' : *q);
q++;
if( *q == '#' )
while( *q && *q != ' ' && *q != '\n' ) q++;
}
ss << "</a>";
p = q;
continue;
}
if( *p == '\n' ) ss << "<br>";
else ss << *p;
p++;
}
}
ss << "</td>";
ss << "</tr>\n";
}
Command::Command(const char *_name, bool web, const char *oldName) : name(_name) {
// register ourself.
if ( _commands == 0 )
_commands = new map<string,Command*>;
if( _commandsByBestName == 0 )
_commandsByBestName = new map<string,Command*>;
Command*& c = (*_commands)[name];
if ( c )
log() << "warning: 2 commands with name: " << _name << endl;
c = this;
(*_commandsByBestName)[name] = this;
if( web ) {
if( _webCommands == 0 )
_webCommands = new map<string,Command*>;
(*_webCommands)[name] = this;
}
if( oldName )
(*_commands)[oldName] = this;
}
void Command::help( stringstream& help ) const {
help << "no help defined";
}
bool Command::runAgainstRegistered(const char *ns, BSONObj& jsobj, BSONObjBuilder& anObjBuilder) {
const char *p = strchr(ns, '.');
if ( !p ) return false;
if ( strcmp(p, ".$cmd") != 0 ) return false;
bool ok = false;
bool valid = false;
BSONElement e = jsobj.firstElement();
map<string,Command*>::iterator i;
if ( e.eoo() )
;
/* check for properly registered command objects. Note that all the commands below should be
migrated over to the command object format.
*/
else if ( (i = _commands->find(e.fieldName())) != _commands->end() ) {
valid = true;
string errmsg;
Command *c = i->second;
if ( c->adminOnly() && !startsWith(ns, "admin.") ) {
ok = false;
errmsg = "access denied - use admin db";
}
else if ( jsobj.getBoolField( "help" ) ) {
stringstream help;
help << "help for: " << e.fieldName() << " ";
c->help( help );
anObjBuilder.append( "help" , help.str() );
}
else {
ok = c->run( nsToDatabase( ns ) , jsobj, errmsg, anObjBuilder, false);
}
BSONObj tmp = anObjBuilder.asTempObj();
bool have_ok = tmp.hasField("ok");
bool have_errmsg = tmp.hasField("errmsg");
if (!have_ok)
anObjBuilder.append( "ok" , ok ? 1.0 : 0.0 );
if ( !ok && !have_errmsg) {
anObjBuilder.append("errmsg", errmsg);
uassert_nothrow(errmsg.c_str());
}
return true;
}
return false;
}
Command* Command::findCommand( const string& name ) {
map<string,Command*>::iterator i = _commands->find( name );
if ( i == _commands->end() )
return 0;
return i->second;
}
Command::LockType Command::locktype( const string& name ) {
Command * c = findCommand( name );
if ( ! c )
return WRITE;
return c->locktype();
}
void Command::logIfSlow( const Timer& timer, const string& msg ) {
int ms = timer.millis();
if ( ms > cmdLine.slowMS ) {
out() << msg << " took " << ms << " ms." << endl;
}
}
} // namespace mongo
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