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71e885d7f9
vqsim is a small program that allows node up/down/split/join operations to be simulated without the use of an actual cluster. Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>
122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
/*
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This is a Votequorum object in the parent process. it's really just a conduit for the forked
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votequorum entity
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*/
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#include <qb/qblog.h>
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#include <qb/qbloop.h>
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#include <qb/qbipcc.h>
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#include <netinet/in.h>
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#include "../exec/votequorum.h"
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#include "vqsim.h"
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struct vq_instance
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{
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int nodeid;
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int vq_socket;
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pid_t pid;
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};
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vq_object_t vq_create_instance(qb_loop_t *poll_loop, int nodeid)
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{
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struct vq_instance *instance = malloc(sizeof(struct vq_instance));
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if (!instance) {
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return NULL;
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}
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instance->nodeid = nodeid;
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if (fork_new_instance(nodeid, &instance->vq_socket, &instance->pid)) {
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free(instance);
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return NULL;
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}
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return instance;
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}
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pid_t vq_get_pid(vq_object_t instance)
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{
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struct vq_instance *vqi = instance;
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return vqi->pid;
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}
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void vq_quit(vq_object_t instance)
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{
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struct vq_instance *vqi = instance;
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struct vqsim_msg_header msg;
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int res;
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msg.type = VQMSG_QUIT;
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msg.from_nodeid = 0;
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msg.param = 0;
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res = write(vqi->vq_socket, &msg, sizeof(msg));
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if (res <= 0) {
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perror("Quit write failed");
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}
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}
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int vq_quit_if_inquorate(vq_object_t instance)
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{
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struct vq_instance *vqi = instance;
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struct vqsim_msg_header msg;
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int res;
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msg.type = VQMSG_QUORUMQUIT;
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msg.from_nodeid = 0;
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msg.param = 0;
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res = write(vqi->vq_socket, &msg, sizeof(msg));
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if (res <= 0) {
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perror("Quit write failed");
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}
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return 0;
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}
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int vq_set_nodelist(vq_object_t instance, struct memb_ring_id *ring_id, int *nodeids, int nodeids_entries)
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{
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struct vq_instance *vqi = instance;
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char msgbuf[sizeof(int)*nodeids_entries + sizeof(struct vqsim_sync_msg)];
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struct vqsim_sync_msg *msg = (void*)msgbuf;
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int res;
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msg->header.type = VQMSG_SYNC;
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msg->header.from_nodeid = 0;
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msg->header.param = 0;
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msg->view_list_entries = nodeids_entries;
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memcpy(&msg->view_list, nodeids, nodeids_entries*sizeof(int));
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memcpy(&msg->ring_id, ring_id, sizeof(struct memb_ring_id));
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res = write(vqi->vq_socket, msgbuf, sizeof(msgbuf));
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if (res <= 0) {
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perror("Sync write failed");
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return -1;
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}
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return 0;
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}
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int vq_set_qdevice(vq_object_t instance, struct memb_ring_id *ring_id, int onoff)
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{
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struct vq_instance *vqi = instance;
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struct vqsim_msg_header msg;
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int res;
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msg.type = VQMSG_QDEVICE;
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msg.from_nodeid = 0;
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msg.param = onoff;
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res = write(vqi->vq_socket, &msg, sizeof(msg));
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if (res <= 0) {
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perror("qdevice register write failed");
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return -1;
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}
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return 0;
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}
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int vq_get_parent_fd(vq_object_t instance)
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{
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struct vq_instance *vqi = instance;
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return vqi->vq_socket;
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}
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