static void ctdb_main_loop(struct ctdb_context *ctdb)
{
+ /* we are the dispatcher process now, so start the protocol going */
+ if (ctdb_init_transport(ctdb)) {
+ exit(1);
+ }
+
ctdb->methods->start(ctdb);
/* go into a wait loop to allow other nodes to complete */
}
+/*
+ send a packet to a client
+ */
+static int daemon_queue_send(struct ctdb_client *client, struct ctdb_req_header *hdr)
+{
+ client->ctdb->status.client_packets_sent++;
+ return ctdb_queue_send(client->queue, (uint8_t *)hdr, hdr->length);
+}
+
/*
message handler for when we are in daemon mode. This redirects the message
to the right client
r->datalen = data.dsize;
memcpy(&r->data[0], data.dptr, data.dsize);
- ctdb_queue_send(client->queue, (uint8_t *)&r->hdr, len);
+ daemon_queue_send(client, &r->hdr);
talloc_free(r);
}
if (res != 0) {
DEBUG(0,(__location__ " Failed to register handler %u in daemon\n",
c->srvid));
+ } else {
+ DEBUG(2,(__location__ " Registered message handler for srvid=%u\n",
+ c->srvid));
}
}
r.vnn = ctdb_get_vnn(client->ctdb);
r.num_connected = client->ctdb->num_connected;
- res = ctdb_queue_send(client->queue, (uint8_t *)&r.hdr, r.hdr.length);
+ res = daemon_queue_send(client, &r.hdr);
if (res != 0) {
DEBUG(0,(__location__ " Failed to queue a connect wait response\n"));
return;
}
}
+
+/*
+ called when the daemon gets a getdbpath request from a client
+ */
+static void daemon_request_getdbpath(struct ctdb_client *client,
+ struct ctdb_req_getdbpath *c)
+{
+ struct ctdb_reply_getdbpath *r;
+ struct ctdb_db_context *ctdb_db;
+ char *path;
+ int res, len;
+
+ ctdb_db = find_ctdb_db(client->ctdb, c->db_id);
+ if (!ctdb_db) {
+ DEBUG(0, (__location__ " Unknown database in request. db_id==0x%08x",
+ c->db_id));
+ ctdb_db->ctdb->status.pending_calls--;
+ return;
+ }
+
+ path = talloc_asprintf(c, "%s/%s", ctdb_db->ctdb->db_directory, ctdb_db->db_name);
+
+ /* now send the reply */
+ len = offsetof(struct ctdb_reply_getdbpath, data) + strlen(path);
+ r = ctdbd_allocate_pkt(ctdb_db->ctdb, len);
+
+ talloc_set_name_const(r, "reply_getdbpath packet");
+
+ memset(r, 0, offsetof(struct ctdb_reply_getdbpath, data));
+
+ r->hdr.length = len;
+ r->hdr.ctdb_magic = CTDB_MAGIC;
+ r->hdr.ctdb_version = CTDB_VERSION;
+ r->hdr.operation = CTDB_REPLY_GETDBPATH;
+ r->hdr.reqid = c->hdr.reqid;
+ r->datalen = strlen(path);
+ memcpy(&r->data[0], path, r->datalen);
+
+ res = daemon_queue_send(client, &(r->hdr));
+ if (res != 0) {
+ DEBUG(0,(__location__ " Failed to queue a getdbpath response\n"));
+ return;
+ }
+}
+
+
/*
destroy a ctdb_client
*/
struct ctdb_client *client;
uint32_t reqid;
struct ctdb_call *call;
+ struct timeval start_time;
};
/*
res = ctdb_daemon_call_recv(state, dstate->call);
if (res != 0) {
DEBUG(0, (__location__ " ctdbd_call_recv() returned error\n"));
+ client->ctdb->status.pending_calls--;
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
return;
}
r = ctdbd_allocate_pkt(dstate, length);
if (r == NULL) {
DEBUG(0, (__location__ " Failed to allocate reply_call in ctdb daemon\n"));
+ client->ctdb->status.pending_calls--;
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
return;
}
memset(r, 0, offsetof(struct ctdb_reply_call, data));
r->datalen = dstate->call->reply_data.dsize;
memcpy(&r->data[0], dstate->call->reply_data.dptr, r->datalen);
- res = ctdb_queue_send(client->queue, (uint8_t *)&r->hdr, r->hdr.length);
+ res = daemon_queue_send(client, &r->hdr);
if (res != 0) {
DEBUG(0, (__location__ "Failed to queue packet from daemon to client\n"));
}
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
talloc_free(dstate);
+ client->ctdb->status.pending_calls--;
}
int ret;
struct ctdb_context *ctdb = client->ctdb;
+ ctdb->status.total_calls++;
+ ctdb->status.pending_calls++;
+
ctdb_db = find_ctdb_db(client->ctdb, c->db_id);
if (!ctdb_db) {
DEBUG(0, (__location__ " Unknown database in request. db_id==0x%08x",
c->db_id));
+ ctdb->status.pending_calls--;
return;
}
daemon_incoming_packet, client);
if (ret == -2) {
/* will retry later */
+ ctdb->status.pending_calls--;
return;
}
if (ret != 0) {
DEBUG(0,(__location__ " Unable to fetch record\n"));
+ ctdb->status.pending_calls--;
return;
}
if (dstate == NULL) {
ctdb_ltdb_unlock(ctdb_db, key);
DEBUG(0,(__location__ " Unable to allocate dstate\n"));
+ ctdb->status.pending_calls--;
return;
}
+ dstate->start_time = timeval_current();
dstate->client = client;
dstate->reqid = c->hdr.reqid;
talloc_steal(dstate, data.dptr);
if (call == NULL) {
ctdb_ltdb_unlock(ctdb_db, key);
DEBUG(0,(__location__ " Unable to allocate call\n"));
+ ctdb->status.pending_calls--;
+ ctdb_latency(&ctdb->status.max_call_latency, dstate->start_time);
return;
}
if (state == NULL) {
DEBUG(0,(__location__ " Unable to setup call send\n"));
+ ctdb->status.pending_calls--;
+ ctdb_latency(&ctdb->status.max_call_latency, dstate->start_time);
return;
}
talloc_steal(state, dstate);
state->async.private_data = dstate;
}
+
+static void daemon_request_control_from_client(struct ctdb_client *client,
+ struct ctdb_req_control *c);
+
/* data contains a packet from the client */
static void daemon_incoming_packet(void *p, uint8_t *data, uint32_t nread)
{
struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
struct ctdb_client *client = talloc_get_type(p, struct ctdb_client);
TALLOC_CTX *tmp_ctx;
+ struct ctdb_context *ctdb = client->ctdb;
/* place the packet as a child of a tmp_ctx. We then use
talloc_free() below to free it. If any of the calls want
switch (hdr->operation) {
case CTDB_REQ_CALL:
+ ctdb->status.client.req_call++;
daemon_request_call_from_client(client, (struct ctdb_req_call *)hdr);
break;
case CTDB_REQ_REGISTER:
+ ctdb->status.client.req_register++;
daemon_request_register_message_handler(client,
(struct ctdb_req_register *)hdr);
break;
+
case CTDB_REQ_MESSAGE:
+ ctdb->status.client.req_message++;
daemon_request_message_from_client(client, (struct ctdb_req_message *)hdr);
break;
case CTDB_REQ_CONNECT_WAIT:
+ ctdb->status.client.req_connect_wait++;
daemon_request_connect_wait(client, (struct ctdb_req_connect_wait *)hdr);
break;
case CTDB_REQ_SHUTDOWN:
+ ctdb->status.client.req_shutdown++;
daemon_request_shutdown(client, (struct ctdb_req_shutdown *)hdr);
break;
+ case CTDB_REQ_GETDBPATH:
+ daemon_request_getdbpath(client, (struct ctdb_req_getdbpath *)hdr);
+ break;
+
+ case CTDB_REQ_CONTROL:
+ ctdb->status.client.req_control++;
+ daemon_request_control_from_client(client, (struct ctdb_req_control *)hdr);
+ break;
+
default:
DEBUG(0,(__location__ " daemon: unrecognized operation %d\n",
hdr->operation));
talloc_free(tmp_ctx);
}
-
+/*
+ called when the daemon gets a incoming packet
+ */
static void ctdb_daemon_read_cb(uint8_t *data, size_t cnt, void *args)
{
struct ctdb_client *client = talloc_get_type(args, struct ctdb_client);
return;
}
+ client->ctdb->status.client_packets_recv++;
+
if (cnt < sizeof(*hdr)) {
ctdb_set_error(client->ctdb, "Bad packet length %d in daemon\n", cnt);
return;
return;
}
+ DEBUG(3,(__location__ " client request %d of type %d length %d from "
+ "node %d to %d\n", hdr->reqid, hdr->operation, hdr->length,
+ hdr->srcnode, hdr->destnode));
+
/* it is the responsibility of the incoming packet function to free 'data' */
daemon_incoming_packet(client, data, cnt);
}
struct fd_event *fde;
const char *domain_socket_name;
- /* generate a name to use for our local socket */
- ctdb->daemon.name = talloc_asprintf(ctdb, "%s.%s", CTDB_PATH, ctdb->address.address);
/* get rid of any old sockets */
unlink(ctdb->daemon.name);
close(fd[0]);
close(ctdb->daemon.sd);
ctdb->daemon.sd = -1;
+
+ /* Added because of ctdb->methods->allocate_pkt calls */
+ /* TODO: clean */
+ int ctdb_tcp_init(struct ctdb_context *ctdb);
+ ctdb_tcp_init(ctdb);
+
return 0;
}
{
ctdb->num_finished++;
}
+
+
+struct daemon_control_state {
+ struct ctdb_client *client;
+ struct ctdb_req_control *c;
+};
+
+/*
+ callback when a control reply comes in
+ */
+static void daemon_control_callback(struct ctdb_context *ctdb,
+ uint32_t status, TDB_DATA data,
+ void *private_data)
+{
+ struct daemon_control_state *state = talloc_get_type(private_data,
+ struct daemon_control_state);
+ struct ctdb_client *client = state->client;
+ struct ctdb_reply_control *r;
+ size_t len;
+
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+ DEBUG(0,("callback: size=%u\n", data.dsize));
+
+ /* construct a message to send to the client containing the data */
+ len = offsetof(struct ctdb_req_control, data) + data.dsize;
+ r = ctdbd_allocate_pkt(client, len);
+ talloc_set_name_const(r, "reply_control packet");
+
+ memset(r, 0, offsetof(struct ctdb_req_message, data));
+
+ r->hdr.length = len;
+ r->hdr.ctdb_magic = CTDB_MAGIC;
+ r->hdr.ctdb_version = CTDB_VERSION;
+ r->hdr.operation = CTDB_REPLY_CONTROL;
+ r->status = status;
+ r->datalen = data.dsize;
+ memcpy(&r->data[0], data.dptr, data.dsize);
+
+ daemon_queue_send(client, &r->hdr);
+
+ talloc_free(state);
+}
+
+/*
+ this is called when the ctdb daemon received a ctdb request control
+ from a local client over the unix domain socket
+ */
+static void daemon_request_control_from_client(struct ctdb_client *client,
+ struct ctdb_req_control *c)
+{
+ TDB_DATA data;
+ int res;
+ struct daemon_control_state *state;
+
+ state = talloc(client, struct daemon_control_state);
+ CTDB_NO_MEMORY_VOID(client->ctdb, state);
+
+ state->client = client;
+ state->c = talloc_steal(state, c);
+
+ data.dptr = &c->data[0];
+ data.dsize = c->datalen;
+ res = ctdb_daemon_send_control(client->ctdb, c->hdr.destnode,
+ c->srvid, c->opcode, data, daemon_control_callback,
+ state);
+ if (res != 0) {
+ DEBUG(0,(__location__ " Failed to send control to remote node %u\n",
+ c->hdr.destnode));
+ }
+}
git.samba.org / samba.git / blobdiff