int
crm_ipc_send(crm_ipc_t * client, xmlNode * message, enum crm_ipc_flags flags, int32_t ms_timeout,
xmlNode ** reply)
{
long rc = 0;
struct iovec *iov;
static uint32_t id = 0;
static int factor = 8;
struct crm_ipc_response_header *header;
crm_ipc_init();
if (client == NULL) {
crm_notice("Invalid connection");
return -ENOTCONN;
} else if (crm_ipc_connected(client) == FALSE) {
/* Don't even bother */
crm_notice("Connection to %s closed", client->name);
return -ENOTCONN;
}
if (ms_timeout == 0) {
ms_timeout = 5000;
}
if (client->need_reply) {
crm_trace("Trying again to obtain pending reply from %s", client->name);
rc = qb_ipcc_recv(client->ipc, client->buffer, client->buf_size, ms_timeout);
if (rc < 0) {
crm_warn("Sending to %s (%p) is disabled until pending reply is received", client->name,
client->ipc);
return -EALREADY;
} else {
crm_notice("Lost reply from %s (%p) finally arrived, sending re-enabled", client->name,
client->ipc);
client->need_reply = FALSE;
}
}
id++;
CRM_LOG_ASSERT(id != 0); /* Crude wrap-around detection */
rc = crm_ipc_prepare(id, message, &iov, client->max_buf_size);
if(rc < 0) {
return rc;
}
header = iov[0].iov_base;
header->flags |= flags;
if(is_set(flags, crm_ipc_proxied)) {
/* Don't look for a synchronous response */
clear_bit(flags, crm_ipc_client_response);
}
if(header->size_compressed) {
if(factor < 10 && (client->max_buf_size / 10) < (rc / factor)) {
crm_notice("Compressed message exceeds %d0%% of the configured ipc limit (%u bytes), "
"consider setting PCMK_ipc_buffer to %u or higher",
factor, client->max_buf_size, 2 * client->max_buf_size);
factor++;
}
}
crm_trace("Sending from client: %s request id: %d bytes: %u timeout:%d msg...",
client->name, header->qb.id, header->qb.size, ms_timeout);
if (ms_timeout > 0 || is_not_set(flags, crm_ipc_client_response)) {
rc = internal_ipc_send_request(client, iov, ms_timeout);
if (rc <= 0) {
crm_trace("Failed to send from client %s request %d with %u bytes...",
client->name, header->qb.id, header->qb.size);
goto send_cleanup;
} else if (is_not_set(flags, crm_ipc_client_response)) {
crm_trace("Message sent, not waiting for reply to %d from %s to %u bytes...",
header->qb.id, client->name, header->qb.size);
goto send_cleanup;
}
rc = internal_ipc_get_reply(client, header->qb.id, ms_timeout);
if (rc < 0) {
/* No reply, for now, disable sending
*
* The alternative is to close the connection since we don't know
* how to detect and discard out-of-sequence replies
*
* TODO - implement the above
*/
client->need_reply = TRUE;
}
} else {
rc = internal_ipc_send_recv(client, iov);
}
if (rc > 0) {
struct crm_ipc_response_header *hdr = (struct crm_ipc_response_header *)(void*)client->buffer;
crm_trace("Received response %d, size=%u, rc=%ld, text: %.200s", hdr->qb.id, hdr->qb.size,
rc, crm_ipc_buffer(client));
if (reply) {
*reply = string2xml(crm_ipc_buffer(client));
}
} else {
crm_trace("Response not received: rc=%ld, errno=%d", rc, errno);
}
send_cleanup:
if (crm_ipc_connected(client) == FALSE) {
crm_notice("Connection to %s closed: %s (%ld)", client->name, pcmk_strerror(rc), rc);
} else if (rc == -ETIMEDOUT) {
crm_warn("Request %d to %s (%p) failed: %s (%ld) after %dms",
header->qb.id, client->name, client->ipc, pcmk_strerror(rc), rc, ms_timeout);
crm_write_blackbox(0, NULL);
} else if (rc <= 0) {
crm_warn("Request %d to %s (%p) failed: %s (%ld)",
header->qb.id, client->name, client->ipc, pcmk_strerror(rc), rc);
}
free(header);
free(iov[1].iov_base);
free(iov);
return rc;
}
int
crm_ipc_send(crm_ipc_t *client, xmlNode *message, enum crm_ipc_flags flags, int32_t ms_timeout, xmlNode **reply)
{
long rc = 0;
struct iovec iov[2];
static uint32_t id = 0;
struct crm_ipc_request_header header;
char *buffer = NULL;
if(crm_ipc_connected(client) == FALSE) {
/* Don't even bother */
crm_notice("Connection to %s closed", client->name);
return -ENOTCONN;
}
if(client->need_reply) {
crm_trace("Trying again to obtain pending reply from %s", client->name);
rc = qb_ipcc_recv(client->ipc, client->buffer, client->buf_size, 300);
if(rc < 0) {
crm_warn("Sending to %s is disabled until pending reply is recieved", client->name);
free(buffer);
return -EREMOTEIO;
} else {
crm_notice("Lost reply from %s finally arrived, sending re-enabled", client->name);
client->need_reply = FALSE;
}
}
buffer = dump_xml_unformatted(message);
iov[0].iov_len = sizeof(struct crm_ipc_request_header);
iov[0].iov_base = &header;
iov[1].iov_len = 1 + strlen(buffer);
iov[1].iov_base = buffer;
header.qb.id = ++id;
header.qb.size = iov[0].iov_len + iov[1].iov_len;
header.flags = flags;
if(ms_timeout == 0) {
ms_timeout = 5000;
}
crm_trace("Sending from client: %s request id: %d bytes: %u timeout:%d msg: %.200s...",
client->name, header.qb.id, header.qb.size, ms_timeout, buffer);
if(ms_timeout > 0) {
rc = internal_ipc_send_request(client, iov, ms_timeout);
if (rc <= 0) {
crm_trace("Failed to send from client %s request %d with %u bytes: %.200s...",
client->name, header.qb.id, header.qb.size, buffer);
goto send_cleanup;
} else if(is_not_set(flags, crm_ipc_client_response)) {
crm_trace("Message sent, not waiting for reply to %d from %s to %u bytes: %.200s...",
header.qb.id, client->name, header.qb.size, buffer);
goto send_cleanup;
}
rc = internal_ipc_get_reply(client, header.qb.id, ms_timeout);
if(rc < 0) {
/* No reply, for now, disable sending
*
* The alternative is to close the connection since we don't know
* how to detect and discard out-of-sequence replies
*
* TODO - implement the above
*/
client->need_reply = TRUE;
}
} else {
rc = internal_ipc_send_recv(client, iov);
}
if(rc > 0) {
struct qb_ipc_response_header *hdr = (struct qb_ipc_response_header *)client->buffer;
crm_trace("Recieved response %d, size=%d, rc=%ld, text: %.200s", hdr->id, hdr->size, rc, crm_ipc_buffer(client));
if(reply) {
*reply = string2xml(crm_ipc_buffer(client));
}
} else {
crm_trace("Response not recieved: rc=%ld, errno=%d", rc, errno);
}
send_cleanup:
if(crm_ipc_connected(client) == FALSE) {
crm_notice("Connection to %s closed: %s (%ld)", client->name, pcmk_strerror(rc), rc);
} else if(rc <= 0) {
crm_warn("Request %d to %s failed: %s (%ld)", header.qb.id, client->name, pcmk_strerror(rc), rc);
crm_info("Request was %.120s", buffer);
}
free(buffer);
return rc;
}