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mongodb/db/db.cpp
2007-11-05 15:12:45 -05:00

346 lines
8.3 KiB
C++

// db.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "db.h"
#include "../grid/message.h"
#include "../util/mmap.h"
#include "../util/hashtab.h"
#include "../util/goodies.h"
#include "pdfile.h"
#include "jsobj.h"
#include "query.h"
struct MyStartupTests {
MyStartupTests() {
assert( sizeof(OID) == 12 );
}
} mystartupdbcpp;
/* example for
var zz = { x: 3, y: "foo", v: { z:5, arr: [1, 2] } }
zz.v.arr.prop = "zoo";
*/
void quicktest() {
cout << "quicktest()\n";
MemoryMappedFile mmf;
char *m = (char *) mmf.map("/tmp/abc", 16384);
// cout << "mmf reads: " << m << endl;
strcpy_s(m, 1000, "hello worldz");
}
MessagingPort dbMsgPort;
void pdfileInit();
class DbMessage {
public:
DbMessage(Message& _m) : m(_m) {
theEnd = _m.data->_data + _m.data->dataLen();
int *r = (int *) _m.data->_data;
reserved = *r;
r++;
data = (const char *) r;
nextjsobj = data;
}
const char * getns() { return data; }
void getns(Namespace& ns) {
ns = data;
}
int pullInt() {
if( nextjsobj == data )
nextjsobj += strlen(data) + 1; // skip namespace
int i = *((int *)nextjsobj);
nextjsobj += 4;
return i;
}
long long pullInt64() {
if( nextjsobj == data )
nextjsobj += strlen(data) + 1; // skip namespace
long long i = *((long long *)nextjsobj);
nextjsobj += 8;
return i;
}
OID* getOID() {
return (OID *) (data + strlen(data) + 1); // skip namespace
}
void getQueryStuff(const char *&query, int& ntoreturn) {
int *i = (int *) (data + strlen(data) + 1);
ntoreturn = *i;
i++;
query = (const char *) i;
}
/* for insert and update msgs */
bool moreJSObjs() { return nextjsobj != 0; }
JSObj nextJsObj() {
if( nextjsobj == data )
nextjsobj += strlen(data) + 1; // skip namespace
JSObj js(nextjsobj);
if( js.objsize() <= 0 )
nextjsobj = null;
else {
nextjsobj += js.objsize();
if( nextjsobj >= theEnd )
nextjsobj = 0;
}
return js;
}
private:
Message& m;
int reserved;
const char *data;
const char *nextjsobj;
const char *theEnd;
};
/*Record* findByOID(const char *ns, OID *oid) {
// temp implementation
Cursor c = theDataFileMgr.findAll(ns);
while( c.ok() ) {
JSObj js = c.current();
OID *i = js.getOID();
if( i && *oid == *i )
return r;
c.advance();
}
return 0;
}*/
#pragma pack(push)
#pragma pack(1)
struct EmptyObject {
EmptyObject() { len = 5; jstype = EOO; }
int len;
char jstype;
} emptyObject;
#pragma pack(pop)
void receivedUpdate(Message& m) {
DbMessage d(m);
const char *ns = d.getns();
int flags = d.pullInt();
JSObj query = d.nextJsObj();
assert( d.moreJSObjs() );
JSObj toupdate = d.nextJsObj();
updateObjects(ns, toupdate, query, flags & 1);
}
void receivedDelete(Message& m) {
DbMessage d(m);
const char *ns = d.getns();
int flags = d.pullInt();
assert( d.moreJSObjs() );
JSObj pattern = d.nextJsObj();
deleteObjects(ns, pattern, flags & 1);
}
void receivedQuery(Message& m) {
DbMessage d(m);
const char *ns = d.getns();
int ntoreturn = d.pullInt();
JSObj query = d.nextJsObj();
auto_ptr< set<string> > fields;
if( d.moreJSObjs() ) {
fields = auto_ptr< set<string> >(new set<string>());
d.nextJsObj().getFieldNames(*fields);
}
QueryResult* msgdata =
runQuery(ns, ntoreturn, query, fields);
Message resp;
resp.setData(msgdata, true);
dbMsgPort.reply(m, resp);
}
void receivedGetMore(Message& m) {
DbMessage d(m);
const char *ns = d.getns();
int ntoreturn = d.pullInt();
long long cursorid = d.pullInt64();
QueryResult* msgdata = getMore(ns, ntoreturn, cursorid);
Message resp;
resp.setData(msgdata, true);
dbMsgPort.reply(m, resp);
}
/*void getbyoid(Message& m) {
DbMessage d(m);
Record *r = findByOID(d.getns(), d.getOID());
Message resp;
if( r == 0 )
resp.setData(opReply, (char *) &emptyObject, emptyObject.len);
else
resp.setData(opReply, r->data, r->netLength());
dbMsgPort.reply(m, resp);
}*/
void receivedInsert(Message& m) {
DbMessage d(m);
while( d.moreJSObjs() ) {
JSObj js = d.nextJsObj();
cout << " temp dbinsert: got js object, size=" << js.objsize() << " ns:" << d.getns() << endl;
theDataFileMgr.insert(d.getns(), (void*) js.objdata(), js.objsize());
}
}
void testTheDb() {
/* this is not validly formatted, if you query this namespace bad things will happen */
theDataFileMgr.insert("sys.unittest.pdfile", (void *) "hello worldx", 13);
theDataFileMgr.insert("sys.unittest.pdfile", (void *) "hello worldx", 13);
JSObj j1((const char *) &js1);
deleteObjects("sys.unittest.delete", j1, false);
theDataFileMgr.insert("sys.unittest.delete", &js1, sizeof(js1));
deleteObjects("sys.unittest.delete", j1, false);
updateObjects("sys.unittest.delete", j1, j1, true);
updateObjects("sys.unittest.delete", j1, j1, false);
cout << "findAll:\n";
auto_ptr<Cursor> c = theDataFileMgr.findAll("sys.unittest.pdfile");
while( c->ok() ) {
Record* r = c->_current();
cout << " gotrec " << r->netLength() << ' ' <<
r->data << '\n';
c->advance();
}
cout << endl;
}
void run() {
dbMsgPort.init(MessagingPort::DBPort);
pdfileInit();
testTheDb();
Message m;
while( 1 ) {
cout << "waiting for msg..." << endl;
m.reset();
if( !dbMsgPort.recv(m) ) {
cout << "recv() returned false" << endl;
break;
}
cout << " got msg" << endl;
cout << " op:" << m.data->operation << " len:" << m.data->len << endl;
if( m.data->operation == dbMsg ) {
bool end = strcmp("end", m.data->_data) == 0;
Message resp;
resp.setData(opReply, "i am fine");
dbMsgPort.reply(m, resp);
if( end ) {
cout << " end msg" << endl;
break;
}
}
else if( m.data->operation == dbQuery ) {
receivedQuery(m);
}
else if( m.data->operation == dbInsert ) {
receivedInsert(m);
}
else if( m.data->operation == dbUpdate ) {
receivedUpdate(m);
}
else if( m.data->operation == dbDelete ) {
receivedDelete(m);
}
else if( m.data->operation == dbGetMore ) {
cout << "dbGetMore: not implemented yet!" << endl;
}
else {
cout << " operation isn't supported ?" << endl;
}
}
}
void msg(const char *m, int extras = 0) {
MessagingPort p;
p.init(29999);
SockAddr db("127.0.0.1", MessagingPort::DBPort);
// SockAddr db("10.0.21.60", MessagingPort::DBPort);
// SockAddr db("172.16.0.179", MessagingPort::DBPort);
Message send;
Message response;
send.setData( dbMsg , m);
for( int i = 0; i < extras; i++ )
p.say(db, send);
cout << "contacting DB..." << endl;
bool ok = p.call(db, send, response);
cout << "ok. response.data:" << ok << endl;
cout << " " << response.data->id << endl;
cout << " " << response.data->len << endl;
cout << " " << response.data->operation << endl;
cout << " " << response.data->reserved << endl;
cout << " " << response.data->responseTo << endl;
cout << " " << response.data->_data << endl;
}
void bar() {
cout << "hello" << endl;
sleepsecs(6);
cout << "hello2" << endl;
}
int main(int argc, char* argv[], char *envp[] )
{
quicktest();
//cout << "fork then sleep" << endl;
//boost::thread foo(&bar);
// sleepsecs(30);
//cout << "sleep" << endl;
if( argc >= 2 ) {
if( strcmp(argv[1], "quicktest") == 0 )
return 0;
if( strcmp(argv[1], "msg") == 0 ) {
msg(argc >= 3 ? argv[2] : "ping");
return 0;
}
if( strcmp(argv[1], "msglots") == 0 ) {
msg(argc >= 3 ? argv[2] : "ping", 1000);
return 0;
}
if( strcmp(argv[1], "run") == 0 ) {
run();
return 0;
}
if( strcmp(argv[1], "longmsg") == 0 ) {
char buf[4096];
memset(buf, 'a', 4095);
buf[4095] = 0;
msg(buf);
return 0;
}
}
cout << "usage:\n";
cout << " quicktest just check basic assertions and exit" << endl;
cout << " msg [msg] send a request to the db server" << endl;
cout << " msg end shut down" << endl;
cout << " run run db" << endl;
cout << " longmsg send a long test message to the db server" << endl;
cout << " msglots send a bunch of test messages, and then wait for answer o nthe last one" << endl;
return 0;
}
//#if !defined(_WIN32)
//int main( int argc, char *argv[], char *envp[] ) {
// return _tmain(argc, 0);
//}
//#endif