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Begin OSD

blocking-uring-test
Vitaliy Filippov 3 years ago
parent
commit
a8deb7d88c
  1. 119
      osd.cpp
  2. 25
      osd_ops.h

119
osd.cpp

@ -0,0 +1,119 @@
#include <sys/socket.h>
#include <sys/epoll.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "osd_ops.h"
#include "ringloop.h"
class osd_t
{
int wait_state = 0;
int epoll_fd = 0;
int listen_fd = 0;
ring_consumer_t consumer;
std::string bind_address;
int bind_port, listen_backlog;
ring_loop_t *ringloop;
void handle_epoll_events();
public:
osd_t(ring_loop_t *ringloop);
~osd_t();
void loop();
};
class osd_client_t
{
int sock_fd;
};
osd_t::osd_t(ring_loop_t *ringloop)
{
this->ringloop = ringloop;
listen_fd = socket(AF_INET, SOCK_STREAM, 0);
if (listen_fd < 0)
{
throw std::runtime_error(std::string("socket: ") + strerror(errno));
}
sockaddr_in addr;
if ((int r = inet_pton(AF_INET, bind_address.c_str(), &addr.sin_addr)) != 1)
{
close(listen_fd);
throw std::runtime_error("bind address "+bind_address+(r == 0 ? " is not valid" : ": no ipv4 support"));
}
addr.sin_family = AF_INET;
addr.sin_port = bind_port;
if (bind(listen_fd, &addr, sizeof(addr)) < 0)
{
close(listen_fd);
throw std::runtime_error(std::string("bind: ") + strerror(errno));
}
if (listen(listen_fd, listen_backlog) < 0)
{
close(listen_fd);
throw std::runtime_error(std::string("listen: ") + strerror(errno));
}
epoll_fd = epoll_create(1);
if (epoll_fd < 0)
{
close(listen_fd);
throw std::runtime_error(std::string("epoll_create: ") + strerror(errno));
}
struct epoll_event ev;
ev.data.fd = listen_fd;
ev.events = EPOLLIN | EPOLLET | EPOLLONESHOT;
if (epoll_ctl(epfd, EPOLL_CTL_ADD, sfd, &ev) < 0)
{
throw std::runtime_error(std::string("epoll_ctl: ") + strerror(errno));
}
consumer.loop = [this]() { loop(); };
ringloop->register_consumer(consumer);
}
osd_t::~osd_t()
{
ringloop->unregister_consumer(consumer);
close(epoll_fd);
close(listen_fd);
}
void osd_t::loop()
{
if (wait_state == 1)
{
return;
}
struct io_uring_sqe *sqe = ringloop->get_sqe();
if (!sqe)
{
wait_state = 0;
return;
}
struct ring_data_t *data = ((ring_data_t*)sqe->user_data);
my_uring_prep_poll_add(sqe, epoll_fd, POLLIN);
data->callback = [&](ring_data_t *data)
{
if (data->res < 0)
{
throw std::runtime_error(std::string("epoll failed: ") + strerror(-data->res));
}
handle_epoll_events();
wait_state = 0;
};
wait_state = 1;
ringloop->submit();
}
void osd_t::handle_epoll_events()
{
}

25
osd_ops.h

@ -1,9 +1,12 @@
#pragma once
#include "blockstore.h"
#include <stdint.h>
#define SECONDARY_OSD_OP_MAGIC 0xf3f003b966ace9ab2bd7b10325434553
#define SECONDARY_OSD_REPLY_MAGIC 0xd17a57243b580b99baa699b87b434553
#define OSD_OP_PACKET_SIZE 0x80
#define OSD_REPLY_PACKET_SIZE 0x80
#define OSD_OP_SECONDARY_READ 0x01
#define OSD_OP_SECONDARY_WRITE 0x02
#define OSD_OP_SECONDARY_SYNC 0x03
@ -144,3 +147,25 @@ struct __attribute__((__packed__)) osd_reply_secondary_list_t
// oid array
object_id *oids;
};
union osd_any_op_t
{
osd_op_secondary_rw_t secondary_rw;
osd_op_secondary_del_t secondary_del;
osd_op_secondary_sync_t op_sync;
osd_op_secondary_stabilize_t op_stabilize;
osd_op_secondary_list_t op_list;
};
union osd_any_reply_t
{
osd_reply_secondary_rw_t secondary_rw;
osd_reply_secondary_del_t secondary_del;
osd_reply_secondary_sync_t op_sync;
osd_reply_secondary_stabilize_t op_stabilize;
osd_reply_secondary_list_t op_list;
};
static int size_ok = sizeof(osd_any_op_t) < OSD_OP_PACKET_SIZE &&
sizeof(osd_any_reply_t) < OSD_REPLY_PACKET_SIZE
? (perror("BUG: too small packet size"), 0) : 1;

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