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#include <iostream>
#include <fstream>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string>
#include <uuid/uuid.h>
#include <drizzled/serialize/replication_event.pb.h>
using namespace std;
static uint64_t query_id= 0;
char transaction_id[37];
/*
Example script for reader a Drizzle master replication list.
*/
void write_ddl(drizzle::Event *record, const char *sql)
{
uuid_t uu;
uuid_generate_time(uu);
uuid_unparse(uu, transaction_id);
using namespace drizzle;
record->set_type(Event::DDL);
record->set_autocommit(true);
record->set_server_id("localhost");
record->set_query_id(query_id++);
record->set_transaction_id(transaction_id);
record->set_schema("test");
record->set_sql(sql);
}
void write_insert(drizzle::Event *record, const char *trx)
{
using namespace drizzle;
Event::Value *value;
record->set_type(Event::INSERT);
record->set_autocommit(true);
record->set_server_id("localhost");
record->set_query_id(query_id++);
record->set_transaction_id(trx);
record->set_schema("test");
record->set_table("t1");
record->set_sql("INSERT INTO t1 (a) VALUES (1) (2)");
/* Add Field Names */
record->add_field_names("a");
/* Add values (first row) */
value= record->add_values();
value->add_value("1");
/* Add values (second row) */
value= record->add_values();
value->add_value("2");
}
void write_delete(drizzle::Event *record, const char *trx)
{
using namespace drizzle;
uuid_t uu;
Event::Value *value;
record->set_type(Event::DELETE);
record->set_autocommit(true);
record->set_server_id("localhost");
record->set_query_id(query_id++);
record->set_transaction_id(trx);
record->set_schema("test");
record->set_table("t1");
record->set_sql("DELETE FROM t1 WHERE a IN (1, 2)");
/* Add Field Names */
record->set_primary_key("a");
/* Add values for IN() */
value= record->add_values();
value->add_value("1");
value->add_value("2");
}
void write_update(drizzle::Event *record, const char *trx)
{
using namespace drizzle;
Event::Value *value;
record->set_type(Event::UPDATE);
record->set_autocommit(true);
record->set_server_id("localhost");
record->set_query_id(query_id++);
record->set_transaction_id(trx);
record->set_schema("test");
record->set_table("t1");
record->set_sql("UPDATE t1 SET a=5 WHERE a = 1 ");
record->set_primary_key("a");
/* Add Field Names */
record->add_field_names("a");
/* Add values (first row) */
value= record->add_values();
value->add_value("1"); // The first value is always the primary key comparison value
value->add_value("5");
/* Add values (second row) */
value= record->add_values();
value->add_value("2");
value->add_value("6");
}
void write_to_disk(int file, drizzle::EventList *list)
{
std::string buffer;
uint64_t length;
size_t written;
list->SerializePartialToString(&buffer);
length= buffer.length();
cout << "Writing record of " << length << "." << endl;
if ((written= write(file, &length, sizeof(uint64_t))) != sizeof(uint64_t))
{
cerr << "Only wrote " << written << " out of " << length << "." << endl;
exit(1);
}
if ((written= write(file, buffer.c_str(), length)) != length)
{
cerr << "Only wrote " << written << " out of " << length << "." << endl;
exit(1);
}
}
int main(int argc, char* argv[])
{
GOOGLE_PROTOBUF_VERIFY_VERSION;
int file;
if (argc != 2)
{
cerr << "Usage: " << argv[0] << " REPLICATION_EVENT_LOG " << endl;
return -1;
}
if ((file= open(argv[1], O_APPEND|O_CREAT|O_SYNC|O_WRONLY, S_IRWXU)) == -1)
{
cerr << "Can not open file: " << argv[0] << endl;
exit(0);
}
drizzle::EventList list;
/* Write first set of records */
write_ddl(list.add_event(), "CREATE TABLE A (a int) ENGINE=innodb");
write_insert(list.add_event(), transaction_id);
write_to_disk(file, &list);
/* Write Second set of records */
write_ddl(list.add_event(), "CREATE TABLE A (a int) ENGINE=innodb");
write_delete(list.add_event(), transaction_id);
write_update(list.add_event(), transaction_id);
write_to_disk(file, &list);
close(file);
return 0;
}
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