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02a960c1d3
mongodb/shell/dbshell.cpp

492 lines
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C++
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// dbshell.cpp
#include <stdio.h>
#ifdef USE_READLINE
#include <readline/readline.h>
#include <readline/history.h>
#include <setjmp.h>
jmp_buf jbuf;
#endif
#include "../scripting/engine.h"
#include "../client/dbclient.h"
#include "../util/unittest.h"
#include "utils.h"
using namespace std;
using namespace boost::filesystem;
string historyFile;
bool gotInterrupted = 0;
bool inMultiLine = 0;
#if defined(USE_READLINE) && !defined(__freebsd__) && !defined(_WIN32)
#define CTRLC_HANDLE
#endif
void shellHistoryInit(){
#ifdef USE_READLINE
stringstream ss;
char * h = getenv( "HOME" );
if ( h )
ss << h << "/";
ss << ".dbshell";
historyFile = ss.str();
using_history();
read_history( historyFile.c_str() );
#else
cout << "type \"exit\" to exit" << endl;
#endif
}
void shellHistoryDone(){
#ifdef USE_READLINE
write_history( historyFile.c_str() );
#endif
}
void shellHistoryAdd( const char * line ){
if ( strlen(line) == 0 )
return;
#ifdef USE_READLINE
add_history( line );
#endif
}
void intr( int sig ){
#ifdef CTRLC_HANDLE
longjmp( jbuf , 1 );
#endif
}
#if !defined(_WIN32)
void quitNicely( int sig ){
if ( sig == SIGINT && inMultiLine ){
gotInterrupted = 1;
return;
}
if ( sig == SIGPIPE )
mongo::rawOut( "mongo got signal SIGPIPE\n" );
shellHistoryDone();
exit(0);
}
#endif
char * shellReadline( const char * prompt , int handlesigint = 0 ){
#ifdef USE_READLINE
#ifdef CTRLC_HANDLE
if ( ! handlesigint )
return readline( prompt );
if ( setjmp( jbuf ) ){
gotInterrupted = 1;
sigrelse(SIGINT);
signal( SIGINT , quitNicely );
return 0;
}
signal( SIGINT , intr );
#endif
char * ret = readline( prompt );
signal( SIGINT , quitNicely );
return ret;
#else
printf( prompt );
char * buf = new char[1024];
char * l = fgets( buf , 1024 , stdin );
int len = strlen( buf );
buf[len-1] = 0;
return l;
#endif
}
#if !defined(_WIN32)
#include <string.h>
void quitAbruptly( int sig ) {
ostringstream ossSig;
ossSig << "mongo got signal " << sig << " (" << strsignal( sig ) << "), stack trace: " << endl;
mongo::rawOut( ossSig.str() );
ostringstream ossBt;
mongo::printStackTrace( ossBt );
mongo::rawOut( ossBt.str() );
mongo::shellUtils::KillMongoProgramInstances();
exit(14);
}
void setupSignals() {
signal( SIGINT , quitNicely );
signal( SIGTERM , quitNicely );
signal( SIGPIPE , quitNicely ); // Maybe just log and continue?
signal( SIGABRT , quitAbruptly );
signal( SIGSEGV , quitAbruptly );
signal( SIGBUS , quitAbruptly );
signal( SIGFPE , quitAbruptly );
}
#else
inline void setupSignals() {}
#endif
string fixHost( string url , string host , string port ){
//cout << "fixHost url: " << url << " host: " << host << " port: " << port << endl;
if ( host.size() == 0 && port.size() == 0 ){
if ( url.find( "/" ) == string::npos ){
// check for ips
if ( url.find( "." ) != string::npos )
return url + "/test";
if ( url.find( ":" ) != string::npos &&
isdigit( url[url.find(":")+1] ) )
return url + "/test";
}
return url;
}
if ( url.find( "/" ) != string::npos ){
cerr << "url can't have host or port if you specify them individually" << endl;
exit(-1);
}
if ( host.size() == 0 )
host = "127.0.0.1";
string newurl = host;
if ( port.size() > 0 )
newurl += ":" + port;
newurl += "/" + url;
return newurl;
}
bool isBalanced( string code ){
int brackets = 0;
int parens = 0;
for ( size_t i=0; i<code.size(); i++ ){
switch( code[i] ){
case '/':
if ( i+1 < code.size() && code[i+1] == '/' ){
while ( i<code.size() && code[i] != '\n' )
i++;
}
continue;
case '{': brackets++; break;
case '}': if ( brackets <= 0 ) return true; brackets--; break;
case '(': parens++; break;
case ')': if ( parens <= 0 ) return true; parens--; break;
case '"':
i++;
while ( i < code.size() && code[i] != '"' ) i++;
break;
case '\'':
i++;
while ( i < code.size() && code[i] != '\'' ) i++;
break;
}
}
return brackets == 0 && parens == 0;
}
using mongo::asserted;
struct BalancedTest : public mongo::UnitTest {
public:
void run(){
assert( isBalanced( "x = 5" ) );
assert( isBalanced( "function(){}" ) );
assert( isBalanced( "function(){\n}" ) );
assert( ! isBalanced( "function(){" ) );
assert( isBalanced( "x = \"{\";" ) );
assert( isBalanced( "// {" ) );
assert( ! isBalanced( "// \n {" ) );
assert( ! isBalanced( "\"//\" {" ) );
}
} balnaced_test;
string finishCode( string code ){
while ( ! isBalanced( code ) ){
inMultiLine = 1;
code += "\n";
char * line = shellReadline("... " , 1 );
if ( gotInterrupted )
return "";
if ( ! line )
return "";
code += line;
}
return code;
}
#include <boost/program_options.hpp>
namespace po = boost::program_options;
void show_help_text(const char* name, po::options_description options) {
cout << "MongoDB shell version: " << mongo::versionString << endl;
cout << "usage: " << name << " [options] [db address] [file names (ending in .js)]" << endl
<< "db address can be:" << endl
<< " foo foo database on local machine" << endl
<< " 192.169.0.5/foo foo database on 192.168.0.5 machine" << endl
<< " 192.169.0.5:9999/foo foo database on 192.168.0.5 machine on port 9999" << endl
<< options << endl
<< "file names: a list of files to run. files have to end in .js and will exit after "
<< "unless --shell is specified" << endl;
};
bool fileExists( string file ){
try {
path p(file);
return boost::filesystem::exists( file );
}
catch (...){
return false;
}
}
int _main(int argc, char* argv[]) {
setupSignals();
mongo::shellUtils::RecordMyLocation( argv[ 0 ] );
string url = "test";
string dbhost;
string port;
vector<string> files;
string username;
string password;
bool runShell = false;
bool nodb = false;
string script;
po::options_description shell_options("options");
po::options_description hidden_options("Hidden options");
po::options_description cmdline_options("Command line options");
po::positional_options_description positional_options;
shell_options.add_options()
("shell", "run the shell after executing files")
("nodb", "don't connect to mongod on startup - no 'db address' arg expected")
("port", po::value<string>(&port), "port to connect to")
("host", po::value<string>(&dbhost), "server to connect to")
("eval", po::value<string>(&script), "evaluate javascript")
("username,u", po::value<string>(&username), "username for authentication")
("password,p", po::value<string>(&password), "password for authentication")
("help,h", "show this usage information")
("version", "show version information")
;
hidden_options.add_options()
("dbaddress", po::value<string>(), "dbaddress")
("files", po::value< vector<string> >(), "files")
;
positional_options.add("dbaddress", 1);
positional_options.add("files", -1);
cmdline_options.add(shell_options).add(hidden_options);
po::variables_map params;
/* using the same style as db.cpp uses because eventually we're going
* to merge some of this stuff. */
int command_line_style = (((po::command_line_style::unix_style ^
po::command_line_style::allow_guessing) |
po::command_line_style::allow_long_disguise) ^
po::command_line_style::allow_sticky);
try {
po::store(po::command_line_parser(argc, argv).options(cmdline_options).
positional(positional_options).
style(command_line_style).run(), params);
po::notify(params);
} catch (po::error &e) {
cout << "ERROR: " << e.what() << endl << endl;
show_help_text(argv[0], shell_options);
return mongo::EXIT_BADOPTIONS;
}
if (params.count("shell")) {
runShell = true;
}
if (params.count("nodb")) {
nodb = true;
}
if (params.count("help")) {
show_help_text(argv[0], shell_options);
return mongo::EXIT_CLEAN;
}
if (params.count("files")) {
files = params["files"].as< vector<string> >();
}
if (params.count("version")) {
cout << "MongoDB shell version: " << mongo::versionString << endl;
return mongo::EXIT_CLEAN;
}
/* This is a bit confusing, here are the rules:
*
* if nodb is set then all positional parameters are files
* otherwise the first positional parameter might be a dbaddress, but
* only if one of these conditions is met:
* - it contains no '.' after the last appearance of '\' or '/'
* - it doesn't end in '.js' and it doesn't specify a path to an existing file */
if (params.count("dbaddress")) {
string dbaddress = params["dbaddress"].as<string>();
if (nodb) {
files.insert(files.begin(), dbaddress);
} else {
string basename = dbaddress.substr(dbaddress.find_last_of("/\\") + 1);
if (basename.find_first_of('.') == string::npos ||
(basename.find(".js", basename.size() - 3) == string::npos && !fileExists(dbaddress))) {
url = dbaddress;
} else {
files.insert(files.begin(), dbaddress);
}
}
}
cout << "MongoDB shell version: " << mongo::versionString << endl;
mongo::UnitTest::runTests();
if ( !nodb ) { // connect to db
cout << "url: " << url << endl;
mongo::shellUtils::_dbConnect = (string)"db = connect( \"" + fixHost( url , dbhost , port ) + "\")";
if ( username.size() && password.size() ){
stringstream ss;
ss << "if ( ! db.auth( \"" << username << "\" , \"" << password << "\" ) ){ throw 'login failed'; }";
mongo::shellUtils::_dbAuth = ss.str();
}
}
mongo::ScriptEngine::setup();
mongo::globalScriptEngine->setScopeInitCallback( mongo::shellUtils::initScope );
auto_ptr< mongo::Scope > scope( mongo::globalScriptEngine->newScope() );
if ( !script.empty() ) {
mongo::shellUtils::MongoProgramScope s;
if ( ! scope->exec( script , "(shell eval)" , true , true , false ) )
return -4;
}
for (size_t i = 0; i < files.size(); i++) {
mongo::shellUtils::MongoProgramScope s;
if ( files.size() > 1 )
cout << "loading file: " << files[i] << endl;
if ( ! scope->execFile( files[i] , false , true , false ) ){
cout << "failed to load: " << files[i] << endl;
return -3;
}
}
if ( files.size() == 0 && script.empty() ) {
runShell = true;
}
if ( runShell ){
mongo::shellUtils::MongoProgramScope s;
shellHistoryInit();
cout << "type \"help\" for help" << endl;
//v8::Handle<v8::Object> shellHelper = baseContext_->Global()->Get( v8::String::New( "shellHelper" ) )->ToObject();
while ( 1 ){
inMultiLine = 0;
gotInterrupted = 0;
char * line = shellReadline( "> " );
if ( line )
while ( line[0] == ' ' )
line++;
if ( ! line || ( strlen(line) == 4 && strstr( line , "exit" ) ) ){
cout << "bye" << endl;
break;
}
string code = line;
if ( code == "exit" ){
break;
}
if ( code.size() == 0 )
continue;
code = finishCode( code );
if ( gotInterrupted ){
cout << endl;
continue;
}
if ( code.size() == 0 )
break;
bool wascmd = false;
{
string cmd = line;
if ( cmd.find( " " ) > 0 )
cmd = cmd.substr( 0 , cmd.find( " " ) );
if ( cmd.find( "\"" ) == string::npos ){
scope->exec( (string)"__iscmd__ = shellHelper[\"" + cmd + "\"];" , "(shellhelp1)" , false , true , true );
if ( scope->getBoolean( "__iscmd__" ) ){
scope->exec( (string)"shellHelper( \"" + cmd + "\" , \"" + code.substr( cmd.size() ) + "\");" , "(shellhelp2)" , false , true , false );
wascmd = true;
}
}
}
if ( ! wascmd ){
try {
scope->exec( code.c_str() , "(shell)" , false , true , false );
scope->exec( "shellPrintHelper( __lastres__ );" , "(shell2)" , true , true , false );
}
catch ( std::exception& e ){
cout << "error:" << e.what() << endl;
}
}
shellHistoryAdd( line );
}
shellHistoryDone();
}
return 0;
}
int main(int argc, char* argv[]) {
try {
return _main( argc , argv );
}
catch ( mongo::DBException& e ){
cerr << "exception: " << e.what() << endl;
return -1;
}
}
namespace mongo {
DBClientBase * createDirectClient(){
uassert( 10256 , "no createDirectClient in shell" , 0 );
return 0;
}
}
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