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-rw-r--r--ctdb/event/event_cmd.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/ctdb/event/event_cmd.c b/ctdb/event/event_cmd.c
new file mode 100644
index 0000000..db39e4d
--- /dev/null
+++ b/ctdb/event/event_cmd.c
@@ -0,0 +1,358 @@
+/*
+ CTDB event daemon - command handling
+
+ Copyright (C) Amitay Isaacs 2018
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+
+#include <talloc.h>
+#include <tevent.h>
+
+#include "lib/util/debug.h"
+#include "lib/util/tevent_unix.h"
+
+#include "common/logging.h"
+
+#include "event/event_private.h"
+
+struct event_cmd_state {
+ struct event_context *eventd;
+ struct ctdb_event_request *request;
+ struct ctdb_event_reply *reply;
+};
+
+/*
+ * CTDB_EVENT_CMD_RUN
+ */
+
+static void event_cmd_run_done(struct tevent_req *subreq);
+
+static struct tevent_req *event_cmd_run_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct event_context *eventd,
+ struct ctdb_event_request *request,
+ struct ctdb_event_reply *reply)
+{
+ struct tevent_req *req, *subreq;
+ struct event_cmd_state *state;
+ struct run_event_context *run_ctx;
+ struct ctdb_event_request_run *rdata;
+ int ret;
+ bool continue_on_failure = false;
+
+ req = tevent_req_create(mem_ctx, &state, struct event_cmd_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ state->eventd = eventd;
+ state->request = request;
+ state->reply = reply;
+
+ rdata = request->data.run;
+
+ ret = eventd_run_ctx(eventd, rdata->component, &run_ctx);
+ if (ret != 0) {
+ state->reply->result = ret;
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ if (rdata->flags & CTDB_EVENT_RUN_ALL) {
+ continue_on_failure = true;
+ }
+
+ subreq = run_event_send(state,
+ ev,
+ run_ctx,
+ rdata->event,
+ rdata->args,
+ tevent_timeval_current_ofs(rdata->timeout,0),
+ continue_on_failure);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, event_cmd_run_done, req);
+
+ return req;
+}
+
+static void event_cmd_run_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct event_cmd_state *state = tevent_req_data(
+ req, struct event_cmd_state);
+ struct run_event_script_list *script_list = NULL;
+ struct ctdb_event_request_run *rdata;
+ int ret;
+ bool ok;
+
+ ok = run_event_recv(subreq, &ret, state, &script_list);
+ TALLOC_FREE(subreq);
+ if (!ok) {
+ state->reply->result = ret;
+ goto done;
+ }
+
+ if (script_list == NULL) {
+ state->reply->result = EIO;
+ goto done;
+ }
+
+ if (script_list->summary == -ECANCELED) {
+ state->reply->result = ECANCELED;
+ goto done;
+ }
+
+ rdata = state->request->data.run;
+ ret = eventd_set_event_result(state->eventd,
+ rdata->component,
+ rdata->event,
+ script_list);
+ if (ret != 0) {
+ state->reply->result = ret;
+ goto done;
+ }
+
+ if (script_list->summary == -ETIMEDOUT) {
+ state->reply->result = ETIMEDOUT;
+ } else if (script_list->summary != 0) {
+ state->reply->result = ENOEXEC;
+ }
+
+done:
+ tevent_req_done(req);
+}
+
+/*
+ * CTDB_EVENT_CMD_STATUS
+ */
+
+static struct tevent_req *event_cmd_status_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct event_context *eventd,
+ struct ctdb_event_request *request,
+ struct ctdb_event_reply *reply)
+{
+ struct tevent_req *req;
+ struct event_cmd_state *state;
+ struct ctdb_event_request_run *rdata;
+ struct run_event_script_list *script_list;
+ int ret;
+
+ req = tevent_req_create(mem_ctx, &state, struct event_cmd_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ reply->data.status = talloc_zero(reply,
+ struct ctdb_event_reply_status);
+ if (tevent_req_nomem(reply->data.status, req)) {
+ reply->result = ENOMEM;
+ goto done;
+ }
+
+ rdata = request->data.run;
+
+ ret = eventd_get_event_result(eventd,
+ rdata->component,
+ rdata->event,
+ &script_list);
+ if (ret != 0) {
+ reply->result = ret;
+ goto done;
+ }
+
+ reply->data.status->script_list = eventd_script_list(reply,
+ script_list);
+ if (reply->data.status->script_list == NULL) {
+ reply->result = ENOMEM;
+ goto done;
+ }
+ reply->data.status->summary = script_list->summary;
+
+ reply->result = 0;
+
+done:
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+}
+
+/*
+ * CTDB_EVENT_CMD_SCRIPT
+ */
+
+static struct tevent_req *event_cmd_script_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct event_context *eventd,
+ struct ctdb_event_request *request,
+ struct ctdb_event_reply *reply)
+{
+ struct tevent_req *req;
+ struct event_cmd_state *state;
+ struct run_event_context *run_ctx;
+ struct ctdb_event_request_script *rdata;
+ int ret;
+
+ req = tevent_req_create(mem_ctx, &state, struct event_cmd_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ rdata = request->data.script;
+
+ ret = eventd_run_ctx(eventd, rdata->component, &run_ctx);
+ if (ret != 0) {
+ reply->result = ret;
+ goto done;
+ }
+
+ if (rdata->action == CTDB_EVENT_SCRIPT_DISABLE) {
+ ret = run_event_script_disable(run_ctx, rdata->script);
+ } else if (rdata->action == CTDB_EVENT_SCRIPT_ENABLE) {
+ ret = run_event_script_enable(run_ctx, rdata->script);
+ } else {
+ D_ERR("Invalid action specified\n");
+ reply->result = EPROTO;
+ goto done;
+ }
+
+ if (ret != 0) {
+ reply->result = ret;
+ goto done;
+ }
+
+ reply->result = 0;
+
+done:
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+}
+
+static bool event_cmd_recv(struct tevent_req *req, int *perr)
+{
+ if (tevent_req_is_unix_error(req, perr)) {
+ return false;
+ }
+
+ return true;
+}
+
+
+struct event_cmd_dispatch_state {
+ struct ctdb_event_reply *reply;
+};
+
+static void event_cmd_dispatch_done(struct tevent_req *subreq);
+
+struct tevent_req *event_cmd_dispatch_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct event_context *eventd,
+ struct ctdb_event_request *request)
+{
+ struct tevent_req *req, *subreq;
+ struct event_cmd_dispatch_state *state;
+
+ req = tevent_req_create(mem_ctx,
+ &state,
+ struct event_cmd_dispatch_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ state->reply = talloc_zero(state, struct ctdb_event_reply);
+ if (tevent_req_nomem(state->reply, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ state->reply->cmd = request->cmd;
+
+ switch (request->cmd) {
+ case CTDB_EVENT_CMD_RUN:
+ subreq = event_cmd_run_send(state,
+ ev,
+ eventd,
+ request,
+ state->reply);
+ break;
+
+ case CTDB_EVENT_CMD_STATUS:
+ subreq = event_cmd_status_send(state,
+ ev,
+ eventd,
+ request,
+ state->reply);
+ break;
+
+ case CTDB_EVENT_CMD_SCRIPT:
+ subreq = event_cmd_script_send(state,
+ ev,
+ eventd,
+ request,
+ state->reply);
+ break;
+
+ default:
+ state->reply->result = EPROTO;
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, event_cmd_dispatch_done, req);
+
+ return req;
+}
+
+static void event_cmd_dispatch_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ int ret;
+ bool ok;
+
+ ok = event_cmd_recv(subreq, &ret);
+ TALLOC_FREE(subreq);
+ if (!ok) {
+ tevent_req_error(req, ret);
+ return;
+ }
+
+ tevent_req_done(req);
+}
+
+bool event_cmd_dispatch_recv(struct tevent_req *req,
+ int *perr,
+ TALLOC_CTX *mem_ctx,
+ struct ctdb_event_reply **reply)
+{
+ struct event_cmd_dispatch_state *state = tevent_req_data(
+ req, struct event_cmd_dispatch_state);
+
+ if (tevent_req_is_unix_error(req, perr)) {
+ return false;
+ }
+
+ *reply = talloc_steal(mem_ctx, state->reply);
+ return true;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-13 21:53:34 +0000