0
0
mirror of https://github.com/mongodb/mongo.git synced 2024-12-01 09:32:32 +01:00
mongodb/db/db.cpp

284 lines
6.6 KiB
C++
Raw Normal View History

2007-10-20 01:35:48 +02:00
// 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 "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) {
2007-10-28 19:42:59 +01:00
theEnd = _m.data->_data + _m.data->dataLen();
int *r = (int *) _m.data->_data;
2007-10-20 01:35:48 +02:00
reserved = *r;
r++;
data = (const char *) r;
nextjsobj = data;
}
const char * getns() { return data; }
void getns(Namespace& ns) {
ns = data;
}
2007-10-28 21:38:06 +01:00
int pullInt() {
if( nextjsobj == data )
nextjsobj += strlen(data) + 1; // skip namespace
int i = *((int *)nextjsobj);
nextjsobj += 4;
return i;
}
2007-10-20 01:35:48 +02:00
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);
2007-10-29 03:20:57 +01:00
if( js.objsize() <= 0 )
2007-10-20 01:35:48 +02:00
nextjsobj = null;
2007-10-28 19:42:59 +01:00
else {
2007-10-29 03:20:57 +01:00
nextjsobj += js.objsize() + 4;
2007-10-28 19:42:59 +01:00
if( nextjsobj >= theEnd )
nextjsobj = 0;
}
2007-10-20 01:35:48 +02:00
return js;
}
private:
Message& m;
int reserved;
const char *data;
const char *nextjsobj;
2007-10-28 19:42:59 +01:00
const char *theEnd;
2007-10-20 01:35:48 +02:00
};
Record* findByOID(const char *ns, OID *oid) {
// temp implementation
Cursor c = theDataFileMgr.findAll(ns);
while( c.ok() ) {
Record *r = c.current();
JSObj js(r);
OID *i = js.getOID();
if( i && *oid == *i )
return r;
c.advance();
}
return 0;
}
void updateByOID(const char *ns, char *objdata, int objsize, OID *oid) {
Record *r = findByOID(ns, oid);
if( r == 0 ) {
cout << "updateByOID: no such record " << ns << endl;
return;
}
if( objsize > r->netLength() ) {
cout << "ERROR: updateByOID: growing records not implemented yet." << endl;
return;
}
2007-10-28 19:42:59 +01:00
/* note: need to be smarter if it gets a lot smaller? */
2007-10-20 01:35:48 +02:00
/* this really dumb for now as it gets smaller but doesn't allow regrowth
to the original size! */
memcpy(r->data, objdata, objsize);
r->setNewLength(objsize);
}
#pragma pack(push)
#pragma pack(1)
struct EmptyObject {
EmptyObject() { len = 5; jstype = EOO; }
int len;
char jstype;
} emptyObject;
#pragma pack(pop)
void query(Message& m) {
DbMessage d(m);
2007-10-28 21:38:06 +01:00
const char *ns = d.getns();
int ntoreturn = d.pullInt();
assert( d.moreJSObjs() );
QueryResult* msgdata = runQuery(ns, ntoreturn, d.nextJsObj());
2007-10-20 01:35:48 +02:00
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 dbinsert(Message& m) {
DbMessage d(m);
while( d.moreJSObjs() ) {
JSObj js = d.nextJsObj();
2007-10-28 19:42:59 +01:00
cout << " temp dbinsert: got js object, size=" << js.objsize() << " ns:" << d.getns() << endl;
2007-10-20 01:35:48 +02:00
if( m.data->operation == dbInsert ) {
theDataFileMgr.insert(d.getns(), (void*) js.objdata(), js.objsize());
} else {
// update
OID *oid = js.getOID();
if( oid == null )
cout << "error: no oid on update -- that isn't coded yet" << endl;
else
updateByOID(d.getns(), (char *) js.objdata(), js.objsize(), oid);
}
}
}
void run() {
dbMsgPort.init(MessagingPort::DBPort);
pdfileInit();
2007-10-28 19:42:59 +01:00
theDataFileMgr.insert("sys.unittest.pdfile", (void *) "hello world", 12);
2007-10-20 01:35:48 +02:00
cout << "findAll:\n";
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;
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;
}
}
2007-10-28 21:38:06 +01:00
else if( m.data->operation == dbUpdate || m.data->operation == dbInsert ) {
2007-10-20 01:35:48 +02:00
dbinsert(m);
}
else if( m.data->operation == dbGetByOID ) {
getbyoid(m);
}
else if( m.data->operation == dbQuery ) {
query(m);
}
else if( m.data->operation == dbGetMore ) {
cout << "dbGetMore: not implemented!" << endl;
}
else {
2007-10-28 19:42:59 +01:00
cout << " operation isn't supported ?" << endl;
2007-10-20 01:35:48 +02:00
}
}
}
void msg(const char *m) {
MessagingPort p;
p.init(29999);
SockAddr db("127.0.0.1", MessagingPort::DBPort);
Message send;
Message response;
2007-10-28 18:34:02 +01:00
send.setData( dbMsg , m);
2007-10-20 01:35:48 +02:00
cout << "contacting DB..." << endl;
bool ok = p.call(db, send, response);
cout << "ok: " << 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;
}
int main(int argc, char* argv[], char *envp[] )
{
quicktest();
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], "run") == 0 ) {
run();
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;
return 0;
}
//#if !defined(_WIN32)
//int main( int argc, char *argv[], char *envp[] ) {
// return _tmain(argc, 0);
//}
//#endif