diff --git a/ctdb/common/ctdb.c b/ctdb/common/ctdb.c index 6ab4b16702f..f09f6029b1b 100644 --- a/ctdb/common/ctdb.c +++ b/ctdb/common/ctdb.c @@ -38,6 +38,14 @@ int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport) return -1; } +/* + set some ctdb flags +*/ +void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags) +{ + ctdb->flags |= flags; +} + /* add a node to the list of active nodes @@ -149,7 +157,31 @@ int ctdb_start(struct ctdb_context *ctdb) */ static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length) { - printf("received pkt of length %d\n", length); + struct ctdb_req_header *hdr; + if (length < sizeof(*hdr)) { + ctdb_set_error(ctdb, "Bad packet length %d\n", length); + return; + } + hdr = (struct ctdb_req_header *)data; + if (length != hdr->length) { + ctdb_set_error(ctdb, "Bad header length %d expected %d\n", + hdr->length, length); + return; + } + switch (hdr->operation) { + case CTDB_REQ_CALL: + ctdb_request_call(ctdb, hdr); + break; + + case CTDB_REPLY_CALL: + ctdb_reply_call(ctdb, hdr); + break; + + default: + printf("Packet with unknown operation %d\n", hdr->operation); + talloc_free(hdr); + break; + } } /* @@ -157,7 +189,9 @@ static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t len */ static void ctdb_node_dead(struct ctdb_node *node) { - printf("%s: node %s is dead\n", node->ctdb->name, node->name); + node->ctdb->num_connected--; + printf("%s: node %s is dead: %d connected\n", + node->ctdb->name, node->name, node->ctdb->num_connected); } /* @@ -165,7 +199,37 @@ static void ctdb_node_dead(struct ctdb_node *node) */ static void ctdb_node_connected(struct ctdb_node *node) { - printf("%s: connected to %s\n", node->ctdb->name, node->name); + node->ctdb->num_connected++; + printf("%s: connected to %s - %d connected\n", + node->ctdb->name, node->name, node->ctdb->num_connected); +} + +/* + wait for all nodes to be connected +*/ +void ctdb_connect_wait(struct ctdb_context *ctdb) +{ + int expected = ctdb->num_nodes - 1; + if (ctdb->flags & CTDB_FLAG_SELF_CONNECT) { + expected++; + } + while (ctdb->num_connected != expected) { + event_loop_once(ctdb->ev); + } +} + +/* + wait until we're the only node left +*/ +void ctdb_wait_loop(struct ctdb_context *ctdb) +{ + int expected = 0; + if (ctdb->flags & CTDB_FLAG_SELF_CONNECT) { + expected++; + } + while (ctdb->num_connected > expected) { + event_loop_once(ctdb->ev); + } } static const struct ctdb_upcalls ctdb_upcalls = { diff --git a/ctdb/common/ctdb_call.c b/ctdb/common/ctdb_call.c index d0e9790ec8a..c6dff1e5c0d 100644 --- a/ctdb/common/ctdb_call.c +++ b/ctdb/common/ctdb_call.c @@ -86,49 +86,199 @@ static int ctdb_call_local(struct ctdb_context *ctdb, TDB_DATA key, int call_id, } /* - make a remote ctdb call + called when a CTDB_REQ_CALL packet comes in */ -int ctdb_call(struct ctdb_context *ctdb, TDB_DATA key, int call_id, - TDB_DATA *call_data, TDB_DATA *reply_data) +void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) { - uint32_t dest; - struct ctdb_req_call *c; - uint32_t len; + struct ctdb_req_call *c = (struct ctdb_req_call *)hdr; + TDB_DATA key, call_data, reply_data; + struct ctdb_reply_call *r; struct ctdb_node *node; - dest = ctdb_hash(&key) % ctdb->num_nodes; - if (dest == ctdb->vnn) { - return ctdb_call_local(ctdb, key, call_id, call_data, reply_data); - } + key.dptr = c->data; + key.dsize = c->keylen; + call_data.dptr = c->data + c->keylen; + call_data.dsize = c->calldatalen; - len = sizeof(*c) + key.dsize + (call_data?call_data->dsize:0); - c = talloc_size(ctdb, len); - CTDB_NO_MEMORY(ctdb, c); + ctdb_call_local(ctdb, key, c->callid, + call_data.dsize?&call_data:NULL, + &reply_data); - c->hdr.operation = CTDB_OP_CALL; - c->hdr.destnode = dest; - c->hdr.srcnode = ctdb->vnn; - /* this limits us to 16k outstanding messages - not unreasonable */ - c->hdr.reqid = idr_get_new(ctdb->idr, c, 0xFFFF); - c->callid = call_id; - c->keylen = key.dsize; - c->calldatalen = call_data?call_data->dsize:0; - memcpy(&c->data[0], key.dptr, key.dsize); - if (call_data) { - memcpy(&c->data[key.dsize], call_data->dptr, call_data->dsize); - } + r = talloc_size(ctdb, sizeof(*r) + reply_data.dsize); + r->hdr.length = sizeof(*r) + reply_data.dsize; + r->hdr.operation = CTDB_REPLY_CALL; + r->hdr.destnode = hdr->srcnode; + r->hdr.srcnode = hdr->destnode; + r->hdr.reqid = hdr->reqid; + r->datalen = reply_data.dsize; + memcpy(&r->data[0], reply_data.dptr, reply_data.dsize); - node = ctdb->nodes[dest]; + node = ctdb->nodes[hdr->srcnode]; - if (ctdb->methods->queue_pkt(node, (uint8_t *)c, len) != 0) { - talloc_free(c); - return -1; - } + ctdb->methods->queue_pkt(node, (uint8_t *)r, r->hdr.length); - /* - event_add_timed(ctdb->ev, c, timeval_current_ofs(CTDB_REQ_TIMEOUT, 0), - ctdb_call_timeout, c); - */ - return -1; + talloc_free(reply_data.dptr); + talloc_free(r); } +enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR}; + +/* + state of a in-progress ctdb call +*/ +struct ctdb_call_state { + enum call_state state; + struct ctdb_req_call *c; + struct ctdb_node *node; + TDB_DATA reply_data; +}; + + +/* + called when a CTDB_REPLY_CALL packet comes in +*/ +void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) +{ + struct ctdb_reply_call *c = (struct ctdb_reply_call *)hdr; + struct ctdb_call_state *state; + TDB_DATA reply_data; + + state = idr_find(ctdb->idr, hdr->reqid); + + reply_data.dptr = c->data; + reply_data.dsize = c->datalen; + + state->reply_data = reply_data; + + talloc_steal(state, c); + + state->state = CTDB_CALL_DONE; +} + +/* + destroy a ctdb_call +*/ +static int ctdb_call_destructor(struct ctdb_call_state *state) +{ + idr_remove(state->node->ctdb->idr, state->c->hdr.reqid); + return 0; +} + +/* + called when a call times out +*/ +void ctdb_call_timeout(struct event_context *ev, struct timed_event *te, + struct timeval t, void *private) +{ + struct ctdb_call_state *state = talloc_get_type(private, struct ctdb_call_state); + state->state = CTDB_CALL_ERROR; + ctdb_set_error(state->node->ctdb, "ctdb_call timed out"); +} + +/* + fake an event driven local ctdb_call +*/ +struct ctdb_call_state *ctdb_call_local_send(struct ctdb_context *ctdb, + TDB_DATA key, int call_id, + TDB_DATA *call_data, TDB_DATA *reply_data) +{ + struct ctdb_call_state *state; + int ret; + + state = talloc_zero(ctdb, struct ctdb_call_state); + CTDB_NO_MEMORY(ctdb, state); + + state->state = CTDB_CALL_DONE; + state->node = ctdb->nodes[ctdb->vnn]; + + ret = ctdb_call_local(ctdb, key, call_id, call_data, &state->reply_data); + return state; +} + + +/* + make a remote ctdb call - async send +*/ +struct ctdb_call_state *ctdb_call_send(struct ctdb_context *ctdb, + TDB_DATA key, int call_id, + TDB_DATA *call_data, TDB_DATA *reply_data) +{ + uint32_t dest; + uint32_t len; + struct ctdb_call_state *state; + + dest = ctdb_hash(&key) % ctdb->num_nodes; + if (dest == ctdb->vnn && !(ctdb->flags & CTDB_FLAG_SELF_CONNECT)) { + return ctdb_call_local_send(ctdb, key, call_id, call_data, reply_data); + } + + state = talloc_zero(ctdb, struct ctdb_call_state); + CTDB_NO_MEMORY(ctdb, state); + + len = sizeof(*state->c) + key.dsize + (call_data?call_data->dsize:0); + state->c = talloc_size(ctdb, len); + CTDB_NO_MEMORY(ctdb, state->c); + + state->c->hdr.length = len; + state->c->hdr.operation = CTDB_REQ_CALL; + state->c->hdr.destnode = dest; + state->c->hdr.srcnode = ctdb->vnn; + /* this limits us to 16k outstanding messages - not unreasonable */ + state->c->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF); + state->c->callid = call_id; + state->c->keylen = key.dsize; + state->c->calldatalen = call_data?call_data->dsize:0; + memcpy(&state->c->data[0], key.dptr, key.dsize); + if (call_data) { + memcpy(&state->c->data[key.dsize], call_data->dptr, call_data->dsize); + } + + state->node = ctdb->nodes[dest]; + state->state = CTDB_CALL_WAIT; + + talloc_set_destructor(state, ctdb_call_destructor); + + if (ctdb->methods->queue_pkt(state->node, (uint8_t *)state->c, len) != 0) { + talloc_free(state); + return NULL; + } + + event_add_timed(ctdb->ev, state, timeval_current_ofs(CTDB_REQ_TIMEOUT, 0), + ctdb_call_timeout, state); + return state; +} + + +/* + make a remote ctdb call - async recv +*/ +int ctdb_call_recv(struct ctdb_call_state *state, TDB_DATA *reply_data) +{ + while (state->state < CTDB_CALL_DONE) { + event_loop_once(state->node->ctdb->ev); + } + if (state->state != CTDB_CALL_DONE) { + talloc_free(state); + return -1; + } + if (reply_data) { + reply_data->dptr = talloc_memdup(state->node->ctdb, + state->reply_data.dptr, + state->reply_data.dsize); + reply_data->dsize = state->reply_data.dsize; + } + talloc_free(state); + return 0; +} + +/* + full ctdb_call +*/ +int ctdb_call(struct ctdb_context *ctdb, + TDB_DATA key, int call_id, + TDB_DATA *call_data, TDB_DATA *reply_data) +{ + struct ctdb_call_state *state; + state = ctdb_call_send(ctdb, key, call_id, call_data, reply_data); + return ctdb_call_recv(state, reply_data); +} diff --git a/ctdb/configure b/ctdb/configure deleted file mode 100755 index 883e5ce1abf..00000000000 --- a/ctdb/configure +++ /dev/null @@ -1,22743 +0,0 @@ -#! /bin/sh -# Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.60. -# -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. -# This configure script is free software; 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So we exec the FD to /dev/null, -# effectively closing config.log, so it can be properly (re)opened and -# appended to by config.status. When coming back to configure, we -# need to make the FD available again. -if test "$no_create" != yes; then - ac_cs_success=: - ac_config_status_args= - test "$silent" = yes && - ac_config_status_args="$ac_config_status_args --quiet" - exec 5>/dev/null - $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false - exec 5>>config.log - # Use ||, not &&, to avoid exiting from the if with $? = 1, which - # would make configure fail if this is the last instruction. - $ac_cs_success || { (exit 1); exit 1; } -fi - diff --git a/ctdb/ctdb_test.c b/ctdb/ctdb_test.c index 7bac6deef6f..5bc35ad3322 100644 --- a/ctdb/ctdb_test.c +++ b/ctdb/ctdb_test.c @@ -23,7 +23,7 @@ #include "system/filesys.h" #include "popt.h" -enum my_functions {FUNC_SORT=1, FUNC_FETCH=2, FUNC_SORT_ARRAY=3}; +enum my_functions {FUNC_SORT=1, FUNC_FETCH=2}; static int int_compare(int *i1, int *i2) { @@ -50,36 +50,14 @@ static int sort_func(struct ctdb_call *call) return CTDB_ERR_NOMEM; } call->new_data->dsize = call->record_data.dsize + call->call_data->dsize; + memcpy(call->new_data->dptr, + call->record_data.dptr, call->record_data.dsize); memcpy(call->new_data->dptr+call->record_data.dsize, call->call_data->dptr, call->call_data->dsize); - qsort(call->new_data->dptr, call->new_data->dsize / sizeof(int), - sizeof(int), (comparison_fn_t)int_compare); - return 0; -} -/* - add an integer into a record in sorted order -*/ -static int sort_func_array(struct ctdb_call *call) -{ - if (call->call_data == NULL || - call->call_data->dsize % sizeof(int) != 0) { - return CTDB_ERR_INVALID; - } - call->new_data = talloc(call, TDB_DATA); - if (call->new_data == NULL) { - return CTDB_ERR_NOMEM; - } - call->new_data->dptr = talloc_size(call, - call->call_data->dsize); - if (call->new_data->dptr == NULL) { - return CTDB_ERR_NOMEM; - } - call->new_data->dsize = call->call_data->dsize; - memcpy(call->new_data->dptr, - call->call_data->dptr, call->call_data->dsize); qsort(call->new_data->dptr, call->new_data->dsize / sizeof(int), sizeof(int), (comparison_fn_t)int_compare); + return 0; } @@ -101,12 +79,14 @@ int main(int argc, const char *argv[]) const char *nlist = NULL; const char *transport = "tcp"; const char *myaddress = NULL; + int self_connect=0; struct poptOption popt_options[] = { POPT_AUTOHELP { "nlist", 0, POPT_ARG_STRING, &nlist, 0, "node list file", "filename" }, { "listen", 0, POPT_ARG_STRING, &myaddress, 0, "address to listen on", "address" }, { "transport", 0, POPT_ARG_STRING, &transport, 0, "protocol transport", NULL }, + { "self-connect", 0, POPT_ARG_NONE, &self_connect, 0, "enable self connect", "boolean" }, POPT_TABLEEND }; int opt; @@ -149,6 +129,10 @@ int main(int argc, const char *argv[]) exit(1); } + if (self_connect) { + ctdb_set_flags(ctdb, CTDB_FLAG_SELF_CONNECT); + } + ret = ctdb_set_transport(ctdb, transport); if (ret == -1) { printf("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb)); @@ -172,10 +156,9 @@ int main(int argc, const char *argv[]) /* setup a ctdb call function */ ret = ctdb_set_call(ctdb, sort_func, FUNC_SORT); ret = ctdb_set_call(ctdb, fetch_func, FUNC_FETCH); - ret = ctdb_set_call(ctdb, sort_func_array, FUNC_SORT_ARRAY); /* attach to a specific database */ - ret = ctdb_attach(ctdb, "./testx.tdb", TDB_DEFAULT, O_RDWR|O_CREAT|O_TRUNC, 0666); + ret = ctdb_attach(ctdb, "test.tdb", TDB_DEFAULT, O_RDWR|O_CREAT|O_TRUNC, 0666); if (ret == -1) { printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb)); exit(1); @@ -183,48 +166,41 @@ int main(int argc, const char *argv[]) /* start the protocol running */ ret = ctdb_start(ctdb); + + /* wait until all nodes are connected (should not be needed + outide of test code) */ + ctdb_connect_wait(ctdb); key.dptr = "test"; key.dsize = strlen("test")+1; - -#if 1 -#define TEST_ARRAY_SIZE 100 - /* loop for testing */ - while (1) { - /* add some random data */ - data.dptr = (void*)talloc_array(ev, int, TEST_ARRAY_SIZE); - for (i=0;ictdb; int error = 0; - socklen_t len; + socklen_t len = sizeof(error); if (getsockopt(tnode->fd, SOL_SOCKET, SO_ERROR, &error, &len) != 0 || error != 0) { @@ -63,6 +63,10 @@ static void ctdb_node_connect_write(struct event_context *ev, struct fd_event *f /* tell the ctdb layer we are connected */ node->ctdb->upcalls->node_connected(node); + + if (tnode->queue) { + EVENT_FD_WRITEABLE(tnode->fde); + } } /* diff --git a/ctdb/tcp/tcp_init.c b/ctdb/tcp/tcp_init.c index 39ecec4dbdd..b3378677035 100644 --- a/ctdb/tcp/tcp_init.c +++ b/ctdb/tcp/tcp_init.c @@ -39,7 +39,8 @@ int ctdb_tcp_start(struct ctdb_context *ctdb) next event loop */ for (i=0;inum_nodes;i++) { struct ctdb_node *node = *(ctdb->nodes + i); - if (ctdb_same_address(&ctdb->address, &node->address)) continue; + if (!(ctdb->flags & CTDB_FLAG_SELF_CONNECT) && + ctdb_same_address(&ctdb->address, &node->address)) continue; event_add_timed(ctdb->ev, node, timeval_zero(), ctdb_tcp_node_connect, node); } diff --git a/ctdb/tcp/tcp_io.c b/ctdb/tcp/tcp_io.c index d6bc2db83e4..d572ba533fd 100644 --- a/ctdb/tcp/tcp_io.c +++ b/ctdb/tcp/tcp_io.c @@ -140,8 +140,6 @@ void ctdb_tcp_incoming_read(struct event_context *ev, struct fd_event *fde, /* tell the ctdb layer above that we have a packet */ in->ctdb->upcalls->recv_pkt(in->ctdb, data, num_ready); - - talloc_free(data); } /* @@ -153,14 +151,9 @@ int ctdb_tcp_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length) struct ctdb_tcp_node); struct ctdb_tcp_packet *pkt; - if (tnode->fd == -1) { - ctdb_set_error(node->ctdb, "Sending to dead node %s\n", node->name); - return -1; - } - /* if the queue is empty then try an immediate write, avoiding queue overhead. This relies on non-blocking sockets */ - if (tnode->queue == NULL) { + if (tnode->queue == NULL && tnode->fd != -1) { ssize_t n = write(tnode->fd, data, length); if (n == -1 && errno != EAGAIN && errno != EWOULDBLOCK) { event_add_timed(node->ctdb->ev, node, timeval_zero(), @@ -184,7 +177,7 @@ int ctdb_tcp_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length) pkt->length = length; - if (tnode->queue == NULL) { + if (tnode->queue == NULL && tnode->fd != -1) { EVENT_FD_WRITEABLE(tnode->fde); } diff --git a/ctdb/tests/1node.txt b/ctdb/tests/1node.txt new file mode 100644 index 00000000000..db4350c0c07 --- /dev/null +++ b/ctdb/tests/1node.txt @@ -0,0 +1 @@ +127.0.0.1:9001 diff --git a/ctdb/tests/test1.sh b/ctdb/tests/test1.sh new file mode 100755 index 00000000000..c91899fb380 --- /dev/null +++ b/ctdb/tests/test1.sh @@ -0,0 +1,5 @@ +#!/bin/sh + +killall -q ctdb_test +bin/ctdb_test --nlist tests/1node.txt --listen 127.0.0.1:9001 +killall ctdb_test