Vitaliy Filippov
4a2dcf7b6b
VNPL 1.1 is slightly reworded to make it clear that proprietary software interacting with Vitastor and providing some kind of service to end users isn't a "Proxy Program" if it's not specially designed to be used with Vitastor. For example, Windows OS running in a virtual machine stored in a Vitastor cluster clearly isn't.
132 lines
3.6 KiB
C++
132 lines
3.6 KiB
C++
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
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/**
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* Stub "OSD" implemented on top of osd_messenger to test & compare
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* network performance with sync read/write and io_uring
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdexcept>
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#include "ringloop.h"
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#include "epoll_manager.h"
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#include "messenger.h"
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int bind_stub(const char *bind_address, int bind_port);
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void stub_exec_op(osd_messenger_t *msgr, osd_op_t *op);
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int main(int narg, char *args[])
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{
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ring_consumer_t looper;
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ring_loop_t *ringloop = new ring_loop_t(512);
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epoll_manager_t *epmgr = new epoll_manager_t(ringloop);
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osd_messenger_t *msgr = new osd_messenger_t();
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msgr->osd_num = 1351;
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msgr->tfd = epmgr->tfd;
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msgr->ringloop = ringloop;
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msgr->repeer_pgs = [](osd_num_t) {};
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msgr->exec_op = [msgr](osd_op_t *op) { stub_exec_op(msgr, op); };
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// Accept new connections
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int listen_fd = bind_stub("0.0.0.0", 11203);
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epmgr->set_fd_handler(listen_fd, false, [listen_fd, msgr](int fd, int events)
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{
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msgr->accept_connections(listen_fd);
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});
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looper.loop = [msgr, ringloop]()
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{
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msgr->read_requests();
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msgr->send_replies();
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ringloop->submit();
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};
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ringloop->register_consumer(&looper);
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printf("stub_uring_osd: waiting for clients\n");
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while (true)
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{
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ringloop->loop();
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ringloop->wait();
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}
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delete msgr;
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delete epmgr;
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delete ringloop;
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return 0;
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}
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int bind_stub(const char *bind_address, int bind_port)
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{
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int listen_backlog = 128;
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int listen_fd = socket(AF_INET, SOCK_STREAM, 0);
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if (listen_fd < 0)
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{
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throw std::runtime_error(std::string("socket: ") + strerror(errno));
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}
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int enable = 1;
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setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable));
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sockaddr_in addr;
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int r;
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if ((r = inet_pton(AF_INET, bind_address, &addr.sin_addr)) != 1)
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{
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close(listen_fd);
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throw std::runtime_error("bind address "+std::string(bind_address)+(r == 0 ? " is not valid" : ": no ipv4 support"));
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}
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addr.sin_family = AF_INET;
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addr.sin_port = htons(bind_port);
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if (bind(listen_fd, (sockaddr*)&addr, sizeof(addr)) < 0)
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{
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close(listen_fd);
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throw std::runtime_error(std::string("bind: ") + strerror(errno));
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}
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if (listen(listen_fd, listen_backlog) < 0)
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{
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close(listen_fd);
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throw std::runtime_error(std::string("listen: ") + strerror(errno));
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}
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fcntl(listen_fd, F_SETFL, fcntl(listen_fd, F_GETFL, 0) | O_NONBLOCK);
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return listen_fd;
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}
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void stub_exec_op(osd_messenger_t *msgr, osd_op_t *op)
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{
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op->reply.hdr.magic = SECONDARY_OSD_REPLY_MAGIC;
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op->reply.hdr.id = op->req.hdr.id;
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op->reply.hdr.opcode = op->req.hdr.opcode;
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if (op->req.hdr.opcode == OSD_OP_SEC_READ)
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{
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op->reply.hdr.retval = op->req.sec_rw.len;
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op->buf = malloc(op->req.sec_rw.len);
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op->iov.push_back(op->buf, op->req.sec_rw.len);
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}
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else if (op->req.hdr.opcode == OSD_OP_SEC_WRITE || op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE)
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{
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op->reply.hdr.retval = op->req.sec_rw.len;
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}
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else if (op->req.hdr.opcode == OSD_OP_TEST_SYNC_STAB_ALL)
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{
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op->reply.hdr.retval = 0;
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}
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else
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{
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printf("client %d: unsupported stub opcode: %lu\n", op->peer_fd, op->req.hdr.opcode);
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op->reply.hdr.retval = -EINVAL;
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}
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msgr->outbox_push(op);
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}
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