void libcouchbase_server_buffer_start_packet(libcouchbase_server_t *c,
const void *command_cookie,
ringbuffer_t *buff,
ringbuffer_t *buff_cookie,
const void *data,
libcouchbase_size_t size)
{
struct libcouchbase_command_data_st ct;
memset(&ct, 0, sizeof(struct libcouchbase_command_data_st));
/* @todo we don't want to call gethrtime for each operation, */
/* so I need to pass it down the chain so that a large */
/* multiget can reuse the same timer... */
ct.start = gethrtime();
ct.cookie = command_cookie;
if (ringbuffer_get_nbytes(buff_cookie) == 0) {
c->next_timeout = ct.start;
libcouchbase_update_timer(c->instance);
}
if (!ringbuffer_ensure_capacity(buff, size) ||
!ringbuffer_ensure_capacity(&c->cmd_log, size) ||
!ringbuffer_ensure_capacity(buff_cookie, sizeof(ct)) ||
ringbuffer_write(buff, data, size) != size ||
ringbuffer_write(&c->cmd_log, data, size) != size ||
ringbuffer_write(buff_cookie, &ct, sizeof(ct)) != sizeof(ct)) {
abort();
}
}
void libcouchbase_server_buffer_write_packet(libcouchbase_server_t *c,
ringbuffer_t *buff,
const void *data,
libcouchbase_size_t size)
{
(void)c;
if (!ringbuffer_ensure_capacity(buff, size) ||
!ringbuffer_ensure_capacity(&c->cmd_log, size) ||
ringbuffer_write(buff, data, size) != size ||
ringbuffer_write(&c->cmd_log, data, size) != size) {
abort();
}
}
static void request_config(cccp_provider *cccp)
{
protocol_binary_request_set_cluster_config req;
lcb_connection_t conn = &cccp->connection;
ringbuffer_t *buf = conn->output;
memset(&req, 0, sizeof(req));
req.message.header.request.magic = PROTOCOL_BINARY_REQ;
req.message.header.request.opcode = CMD_GET_CLUSTER_CONFIG;
req.message.header.request.opaque = 0xF00D;
if (!buf) {
if ((buf = calloc(1, sizeof(*buf))) == NULL) {
mcio_error(cccp, LCB_CLIENT_ENOMEM);
return;
}
conn->output = buf;
}
if (!ringbuffer_ensure_capacity(buf, sizeof(req.bytes))) {
mcio_error(cccp, LCB_CLIENT_ENOMEM);
}
ringbuffer_write(buf, req.bytes, sizeof(req.bytes));
lcb_sockrw_set_want(conn, LCB_WRITE_EVENT, 1);
lcb_sockrw_apply_want(conn);
lcb_timer_rearm(cccp->timer, PROVIDER_SETTING(&cccp->base,
config_node_timeout));
}
int ringbuffer_memcpy(ringbuffer_t *dst, ringbuffer_t *src,
lcb_size_t nbytes)
{
ringbuffer_t copy = *src;
struct lcb_iovec_st iov[2];
int ii = 0;
lcb_size_t towrite = nbytes;
lcb_size_t toread, nb;
if (nbytes > ringbuffer_get_nbytes(src)) {
/* EINVAL */
return -1;
}
if (!ringbuffer_ensure_capacity(dst, nbytes)) {
/* Failed to allocate space */
return -1;
}
ringbuffer_get_iov(dst, RINGBUFFER_WRITE, iov);
toread = minimum(iov[ii].iov_len, nbytes);
do {
assert(ii < 2);
nb = ringbuffer_read(©, iov[ii].iov_base, toread);
toread -= nb;
towrite -= nb;
++ii;
} while (towrite > 0);
ringbuffer_produced(dst, nbytes);
return 0;
}
void
lcbio_ctx_put(lcbio_CTX *ctx, const void *buf, unsigned nbuf)
{
lcbio__EASYRB *erb = ctx->output;
if (!erb) {
ctx->output = erb = calloc(1, sizeof(*ctx->output));
if (!erb) {
lcbio_ctx_senderr(ctx, LCB_CLIENT_ENOMEM);
return;
}
erb->parent = ctx;
if (!ringbuffer_initialize(&erb->rb, nbuf)) {
lcbio_ctx_senderr(ctx, LCB_CLIENT_ENOMEM);
return;
}
}
if (!ringbuffer_ensure_capacity(&erb->rb, nbuf)) {
lcbio_ctx_senderr(ctx, LCB_CLIENT_ENOMEM);
return;
}
ringbuffer_write(&erb->rb, buf, nbuf);
}
static int do_fill_input_buffer(libcouchbase_server_t *c)
{
struct libcouchbase_iovec_st iov[2];
libcouchbase_ssize_t nr;
if (!ringbuffer_ensure_capacity(&c->input, 8192)) {
libcouchbase_error_handler(c->instance, LIBCOUCHBASE_CLIENT_ENOMEM, NULL);
return -1;
}
ringbuffer_get_iov(&c->input, RINGBUFFER_WRITE, iov);
nr = c->instance->io->recvv(c->instance->io, c->sock, iov, 2);
if (nr == -1) {
switch (c->instance->io->error) {
case EINTR:
break;
case EWOULDBLOCK:
return 0;
default:
libcouchbase_failout_server(c, LIBCOUCHBASE_NETWORK_ERROR);
return -1;
}
} else if (nr == 0) {
assert((iov[0].iov_len + iov[1].iov_len) != 0);
/* TODO stash error message somewhere
* "Connection closed... we should resend to other nodes or reconnect!!" */
libcouchbase_failout_server(c, LIBCOUCHBASE_NETWORK_ERROR);
return -1;
} else {
ringbuffer_produced(&c->input, (libcouchbase_size_t)nr);
}
return 1;
}
lcb_size_t ringbuffer_strcat(ringbuffer_t *buffer, const char *str)
{
lcb_size_t len = strlen(str);
if (!ringbuffer_ensure_capacity(buffer, len)) {
return 0;
}
return ringbuffer_write(buffer, str, len);
}
void libcouchbase_server_buffer_retry_packet(libcouchbase_server_t *c,
struct libcouchbase_command_data_st *ct,
ringbuffer_t *buff,
ringbuffer_t *buff_cookie,
const void *data,
libcouchbase_size_t size)
{
libcouchbase_size_t ct_size = sizeof(struct libcouchbase_command_data_st);
if (ringbuffer_get_nbytes(buff_cookie) == 0) {
c->next_timeout = ct->start;
libcouchbase_update_timer(c->instance);
}
if (!ringbuffer_ensure_capacity(buff, size) ||
!ringbuffer_ensure_capacity(&c->cmd_log, size) ||
!ringbuffer_ensure_capacity(buff_cookie, ct_size) ||
ringbuffer_write(buff, data, size) != size ||
ringbuffer_write(&c->cmd_log, data, size) != size ||
ringbuffer_write(buff_cookie, ct, ct_size) != ct_size) {
abort();
}
}
int ringbuffer_append(ringbuffer_t *src, ringbuffer_t *dest)
{
char buffer[1024];
lcb_size_t nr, nw;
while ((nr = ringbuffer_read(src, buffer, sizeof(buffer))) != 0) {
lcb_assert(ringbuffer_ensure_capacity(dest, nr));
nw = ringbuffer_write(dest, buffer, nr);
lcb_assert(nw == nr);
}
return 1;
}
/**
* Request a read of data into the buffer
* @param conn the connection object
* @param buf a ringbuffer structure. If the read request is successful,
* the ringbuffer is destroyed. Its allocated data is owned by the IO plugin
* for the duration of the operation. It may be restored via
* ringbuffer_take_buffer once the operation has finished.
*/
lcb_sockrw_status_t lcb_sockrw_v1_start_read(lcb_connection_t conn,
ringbuffer_t **buf,
lcb_io_read_cb callback,
lcb_io_error_cb error_callback)
{
int ret;
lcb_io_opt_t io;
struct lcb_buf_info *bi = &conn->sockptr->read_buffer;
if (conn->sockptr->is_reading) {
return LCB_SOCKRW_PENDING;
}
ringbuffer_ensure_capacity(*buf,
conn->settings ? conn->settings->rbufsize :
LCB_DEFAULT_RBUFSIZE);
ringbuffer_get_iov(*buf, RINGBUFFER_WRITE, bi->iov);
lcb_assert(bi->ringbuffer == NULL);
lcb_assert(bi->root == NULL);
bi->ringbuffer = *buf;
bi->root = bi->ringbuffer->root;
*buf = NULL;
io = conn->io;
ret = io->v.v1.start_read(io, conn->sockptr, callback);
if (ret == 0) {
conn->sockptr->is_reading = 1;
return LCB_SOCKRW_PENDING;
} else {
*buf = bi->ringbuffer;
memset(bi, 0, sizeof(*bi));
if (error_callback) {
io->v.v1.send_error(io, conn->sockptr, error_callback);
}
}
return LCB_SOCKRW_IO_ERROR;
}
lcb_sockrw_status_t lcb_sockrw_v0_read(lcb_connection_t conn, ringbuffer_t *buf)
{
struct lcb_iovec_st iov[2];
lcb_ssize_t nr;
lcb_io_opt_t io = conn->io;
if (!ringbuffer_ensure_capacity(buf,
conn->settings ? conn->settings->rbufsize :
LCB_DEFAULT_RBUFSIZE)) {
return LCB_SOCKRW_GENERIC_ERROR;
}
ringbuffer_get_iov(buf, RINGBUFFER_WRITE, iov);
nr = io->v.v0.recvv(io, conn->sockfd, iov, 2);
if (nr == -1) {
switch (io->v.v0.error) {
case EINTR:
break;
case EWOULDBLOCK:
#ifdef USE_EAGAIN
case EAGAIN:
#endif
return LCB_SOCKRW_WOULDBLOCK;
default:
return LCB_SOCKRW_IO_ERROR;
return -1;
}
} else if (nr == 0) {
lcb_assert((iov[0].iov_len + iov[1].iov_len) != 0);
/* TODO stash error message somewhere
* "Connection closed... we should resend to other nodes or reconnect!!" */
return LCB_SOCKRW_SHUTDOWN;
} else {
ringbuffer_produced(buf, (lcb_size_t)nr);
}
return LCB_SOCKRW_READ;
}
int ringbuffer_append(ringbuffer_t *src, ringbuffer_t *dest)
{
char buffer[1024];
lcb_size_t nr, nw;
while ((nr = ringbuffer_read(src, buffer,
sizeof(buffer))) != 0) {
if (!ringbuffer_ensure_capacity(dest, nr)) {
abort();
return 0;
}
nw = ringbuffer_write(dest, buffer, nr);
if (nw != nr) {
abort();
return 0;
}
}
return 1;
}
/**
* Extended version of observe command. This allows us to service
* various forms of higher level operations which use observe in one way
* or another
*/
lcb_error_t lcb_observe_ex(lcb_t instance,
const void *command_cookie,
lcb_size_t num,
const void *const *items,
lcb_observe_type_t type)
{
lcb_size_t ii;
lcb_size_t maxix;
lcb_uint32_t opaque;
struct lcb_command_data_st ct;
struct observe_requests_st reqs;
memset(&reqs, 0, sizeof(reqs));
if (instance->type != LCB_TYPE_BUCKET) {
return lcb_synchandler_return(instance, LCB_EBADHANDLE);
}
if (instance->config.handle == NULL) {
return lcb_synchandler_return(instance, LCB_CLIENT_ETMPFAIL);
}
if (instance->config.dist_type != VBUCKET_DISTRIBUTION_VBUCKET) {
return lcb_synchandler_return(instance, LCB_NOT_SUPPORTED);
}
opaque = ++instance->seqno;
ct.cookie = command_cookie;
maxix = instance->config.nreplicas;
if (type == LCB_OBSERVE_TYPE_CHECK) {
maxix = 0;
} else {
if (type == LCB_OBSERVE_TYPE_DURABILITY) {
ct.flags = LCB_CMD_F_OBS_DURABILITY | LCB_CMD_F_OBS_BCAST;
} else {
ct.flags = LCB_CMD_F_OBS_BCAST;
}
}
reqs.nrequests = instance->nservers;
reqs.requests = calloc(reqs.nrequests, sizeof(*reqs.requests));
for (ii = 0; ii < num; ii++) {
const void *key, *hashkey;
lcb_size_t nkey, nhashkey;
int vbid, jj;
if (type == LCB_OBSERVE_TYPE_DURABILITY) {
const lcb_durability_entry_t *ent = items[ii];
key = ent->request.v.v0.key;
nkey = ent->request.v.v0.nkey;
hashkey = ent->request.v.v0.hashkey;
nhashkey = ent->request.v.v0.nhashkey;
} else {
const lcb_observe_cmd_t *ocmd = items[ii];
key = ocmd->v.v0.key;
nkey = ocmd->v.v0.nkey;
hashkey = ocmd->v.v0.hashkey;
nhashkey = ocmd->v.v0.nhashkey;
}
if (!nhashkey) {
hashkey = key;
nhashkey = nkey;
}
vbid = vbucket_get_vbucket_by_key(instance->config.handle,
hashkey, nhashkey);
for (jj = -1; jj < (int)maxix; jj++) {
struct observe_st *rr;
int idx = vbucket_get_replica(instance->config.handle,
vbid, jj);
if (idx < 0 || idx > (int)instance->nservers) {
if (jj == -1) {
destroy_requests(&reqs);
return lcb_synchandler_return(instance, LCB_NO_MATCHING_SERVER);
}
continue;
}
lcb_assert(idx < (int)reqs.nrequests);
rr = reqs.requests + idx;
if (!rr->allocated) {
if (!init_request(rr)) {
destroy_requests(&reqs);
return lcb_synchandler_return(instance, LCB_CLIENT_ENOMEM);
}
}
{
lcb_uint16_t vb = htons((lcb_uint16_t)vbid);
lcb_uint16_t len = htons((lcb_uint16_t)nkey);
rr->packet.message.header.request.magic = PROTOCOL_BINARY_REQ;
rr->packet.message.header.request.opcode = CMD_OBSERVE;
rr->packet.message.header.request.datatype = PROTOCOL_BINARY_RAW_BYTES;
rr->packet.message.header.request.opaque = opaque;
ringbuffer_ensure_capacity(&rr->body,
sizeof(vb) + sizeof(len) + nkey);
rr->nbody += ringbuffer_write(&rr->body, &vb, sizeof(vb));
rr->nbody += ringbuffer_write(&rr->body, &len, sizeof(len));
rr->nbody += ringbuffer_write(&rr->body, key, nkey);
}
}
}
for (ii = 0; ii < reqs.nrequests; ii++) {
struct observe_st *rr = reqs.requests + ii;
struct lcb_server_st *server = instance->servers + ii;
char *tmp;
if (!rr->allocated) {
continue;
}
rr->packet.message.header.request.bodylen = ntohl((lcb_uint32_t)rr->nbody);
ct.start = gethrtime();
lcb_server_start_packet_ct(server, &ct, rr->packet.bytes,
sizeof(rr->packet.bytes));
if (ringbuffer_is_continous(&rr->body, RINGBUFFER_READ, rr->nbody)) {
tmp = ringbuffer_get_read_head(&rr->body);
TRACE_OBSERVE_BEGIN(&rr->packet, server->authority, tmp, rr->nbody);
lcb_server_write_packet(server, tmp, rr->nbody);
} else {
tmp = malloc(ringbuffer_get_nbytes(&rr->body));
if (!tmp) {
/* FIXME by this time some of requests might be scheduled */
destroy_requests(&reqs);
return lcb_synchandler_return(instance, LCB_CLIENT_ENOMEM);
} else {
ringbuffer_read(&rr->body, tmp, rr->nbody);
TRACE_OBSERVE_BEGIN(&rr->packet, server->authority, tmp, rr->nbody);
lcb_server_write_packet(server, tmp, rr->nbody);
}
}
lcb_server_end_packet(server);
lcb_server_send_packets(server);
}
destroy_requests(&reqs);
return lcb_synchandler_return(instance, LCB_SUCCESS);
}
LIBCOUCHBASE_API
lcb_error_t lcb_observe(lcb_t instance,
const void *command_cookie,
lcb_size_t num,
const lcb_observe_cmd_t *const *items)
{
int vbid, idx, jj;
lcb_size_t ii;
lcb_uint32_t opaque;
struct observe_st *requests;
/* we need a vbucket config before we can start getting data.. */
if (instance->vbucket_config == NULL) {
switch (instance->type) {
case LCB_TYPE_CLUSTER:
return lcb_synchandler_return(instance, LCB_EBADHANDLE);
case LCB_TYPE_BUCKET:
default:
return lcb_synchandler_return(instance, LCB_CLIENT_ETMPFAIL);
}
}
if (instance->dist_type != VBUCKET_DISTRIBUTION_VBUCKET) {
return lcb_synchandler_return(instance, LCB_NOT_SUPPORTED);
}
/* the list of pointers to body buffers for each server */
requests = calloc(instance->nservers, sizeof(struct observe_st));
opaque = ++instance->seqno;
for (ii = 0; ii < num; ++ii) {
const void *key = items[ii]->v.v0.key;
lcb_size_t nkey = items[ii]->v.v0.nkey;
const void *hashkey = items[ii]->v.v0.hashkey;
lcb_size_t nhashkey = items[ii]->v.v0.nhashkey;
if (nhashkey == 0) {
hashkey = key;
nhashkey = nkey;
}
vbid = vbucket_get_vbucket_by_key(instance->vbucket_config, hashkey,
nhashkey);
for (jj = -1; jj < instance->nreplicas; ++jj) {
struct observe_st *rr;
/* it will increment jj to get server index, so (-1 + 1) = 0 (master) */
idx = vbucket_get_replica(instance->vbucket_config, vbid, jj);
if ((idx < 0 || idx > (int)instance->nservers)) {
/* the config says that there is no server yet at that position (-1) */
if (jj == -1) {
/* master node must be available */
destroy_requests(requests, instance->nservers);
return lcb_synchandler_return(instance, LCB_NETWORK_ERROR);
} else {
continue;
}
}
rr = requests + idx;
if (!rr->allocated) {
if (!init_request(rr)) {
destroy_requests(requests, instance->nservers);
return lcb_synchandler_return(instance, LCB_CLIENT_ENOMEM);
}
rr->req.message.header.request.magic = PROTOCOL_BINARY_REQ;
rr->req.message.header.request.opcode = CMD_OBSERVE;
rr->req.message.header.request.datatype = PROTOCOL_BINARY_RAW_BYTES;
rr->req.message.header.request.opaque = opaque;
}
{
lcb_uint16_t vb = htons((lcb_uint16_t)vbid);
lcb_uint16_t len = htons((lcb_uint16_t)nkey);
ringbuffer_ensure_capacity(&rr->body, sizeof(vb) + sizeof(len) + nkey);
rr->nbody += ringbuffer_write(&rr->body, &vb, sizeof(vb));
rr->nbody += ringbuffer_write(&rr->body, &len, sizeof(len));
rr->nbody += ringbuffer_write(&rr->body, key, nkey);
}
}
}
for (ii = 0; ii < instance->nservers; ++ii) {
struct observe_st *rr = requests + ii;
lcb_server_t *server = instance->servers + ii;
if (rr->allocated) {
char *tmp;
rr->req.message.header.request.bodylen = ntohl((lcb_uint32_t)rr->nbody);
lcb_server_start_packet(server, command_cookie, rr->req.bytes, sizeof(rr->req.bytes));
if (ringbuffer_is_continous(&rr->body, RINGBUFFER_READ, rr->nbody)) {
tmp = ringbuffer_get_read_head(&rr->body);
TRACE_OBSERVE_BEGIN(&rr->req, server->authority, tmp, rr->nbody);
lcb_server_write_packet(server, tmp, rr->nbody);
} else {
tmp = malloc(ringbuffer_get_nbytes(&rr->body));
if (!tmp) {
/* FIXME by this time some of requests might be scheduled */
destroy_requests(requests, instance->nservers);
return lcb_synchandler_return(instance, LCB_CLIENT_ENOMEM);
} else {
ringbuffer_read(&rr->body, tmp, rr->nbody);
TRACE_OBSERVE_BEGIN(&rr->req, server->authority, tmp, rr->nbody);
lcb_server_write_packet(server, tmp, rr->nbody);
}
}
lcb_server_end_packet(server);
lcb_server_send_packets(server);
}
}
destroy_requests(requests, instance->nservers);
return lcb_synchandler_return(instance, LCB_SUCCESS);
}
static lcb_error_t
obs_ctxadd(lcb_MULTICMD_CTX *mctx, const lcb_CMDOBSERVE *cmd)
{
const void *hk;
lcb_SIZE nhk;
int vbid;
unsigned maxix;
int ii;
OBSERVECTX *ctx = CTX_FROM_MULTI(mctx);
lcb_t instance = ctx->instance;
mc_CMDQUEUE *cq = &instance->cmdq;
if (LCB_KEYBUF_IS_EMPTY(&cmd->key)) {
return LCB_EMPTY_KEY;
}
if (cq->config == NULL) {
return LCB_CLIENT_ETMPFAIL;
}
if (instance->dist_type != LCBVB_DIST_VBUCKET) {
return LCB_NOT_SUPPORTED;
}
mcreq_extract_hashkey(&cmd->key, &cmd->hashkey, 24, &hk, &nhk);
vbid = lcbvb_k2vb(cq->config, hk, nhk);
maxix = LCBVB_NREPLICAS(cq->config);
for (ii = -1; ii < (int)maxix; ++ii) {
struct observe_st *rr;
lcb_U16 vb16, klen16;
int ix;
if (ii == -1) {
ix = lcbvb_vbmaster(cq->config, vbid);
if (ix < 0) {
return LCB_NO_MATCHING_SERVER;
}
} else {
ix = lcbvb_vbreplica(cq->config, vbid, ii);
if (ix < 0) {
continue;
}
}
lcb_assert(ix < (int)ctx->nrequests);
rr = ctx->requests + ix;
if (!rr->allocated) {
if (!init_request(rr)) {
return LCB_CLIENT_ENOMEM;
}
}
vb16 = htons((lcb_U16)vbid);
klen16 = htons((lcb_U16)cmd->key.contig.nbytes);
ringbuffer_ensure_capacity(&rr->body, sizeof(vb16) + sizeof(klen16));
ringbuffer_write(&rr->body, &vb16, sizeof vb16);
ringbuffer_write(&rr->body, &klen16, sizeof klen16);
ringbuffer_write(&rr->body, cmd->key.contig.bytes, cmd->key.contig.nbytes);
ctx->remaining++;
if (cmd->cmdflags & LCB_CMDOBSERVE_F_MASTER_ONLY) {
break;
}
}
return LCB_SUCCESS;
}
static libcouchbase_error_t create_memcached(const struct libcouchbase_memcached_st *user,
VBUCKET_CONFIG_HANDLE vbconfig)
{
ringbuffer_t buffer;
char *copy = strdup(user->serverlist);
char head[1024];
int first;
char *ptr = copy;
int fail;
libcouchbase_ssize_t offset = 0;
if (copy == NULL) {
return LIBCOUCHBASE_CLIENT_ENOMEM;
}
if (ringbuffer_initialize(&buffer, 1024) == -1) {
free(copy);
return LIBCOUCHBASE_CLIENT_ENOMEM;
}
head[0] = '\0';
offset += snprintf(head + offset, sizeof(head) - offset, "%s", "{");
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"bucketType\":\"memcached\",");
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"nodeLocator\":\"ketama\",");
if (user->username != NULL) {
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"authType\":\"sasl\",");
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"name\":\"");
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
user->username);
offset += snprintf(head + offset, sizeof(head) - offset, "%s", "\",");
if (user->password != NULL) {
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"saslPassword\":\"");
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
user->password);
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\",");
}
}
offset += snprintf(head + offset, sizeof(head) - offset, "%s",
"\"nodes\": [");
ringbuffer_write(&buffer, head, strlen(head));
/* Let's add the hosts... */
first = 1;
do {
char *tok;
char *next = strchr(ptr, ';');
const char *port = "11211";
libcouchbase_ssize_t length;
if (next != NULL) {
*next = '\0';
}
tok = strchr(ptr, ':');
if (tok != NULL) {
*tok = '\0';
port = tok + 1;
if ((tok = strchr(ptr, ':')) != NULL) {
*tok = '\0'; /* Remove weight for now */
}
}
length = snprintf(head, sizeof(head),
"%c{\"hostname\":\"%s\",\"ports\":{\"direct\":%s}}",
first ? ' ' : ',', ptr, port);
first = 0;
if (ringbuffer_ensure_capacity(&buffer, length) == -1) {
free(copy);
return LIBCOUCHBASE_CLIENT_ENOMEM;
}
ringbuffer_write(&buffer, head, length);
if (next != NULL) {
ptr = next + 1;
} else {
ptr = NULL;
}
} while (ptr != NULL);
if (ringbuffer_ensure_capacity(&buffer, 3) == -1) {
free(copy);
return LIBCOUCHBASE_CLIENT_ENOMEM;
}
ringbuffer_write(&buffer, "]}", 3); /* Include '\0' */
/* Now let's parse the config! */
fail = vbucket_config_parse(vbconfig, LIBVBUCKET_SOURCE_MEMORY,
(char *)ringbuffer_get_read_head(&buffer));
free(copy);
ringbuffer_destruct(&buffer);
if (fail) {
/* Hmm... internal error! */
return LIBCOUCHBASE_EINTERNAL;
}
return LIBCOUCHBASE_SUCCESS;
}