Tree wide: Move utilities and libraries to src/utils/.

[collectd.git] / src / utils / cmds / listval.c

diff --git a/src/utils/cmds/listval.c b/src/utils/cmds/listval.c
new file mode 100644 (file)
index 0000000..287786b
--- /dev/null
+++ b/src/utils/cmds/listval.c
@@ -0,0 +1,103 @@
+/**
+ * collectd - src/utils_cmd_listval.c
+ * Copyright (C) 2008       Florian octo Forster
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *   Florian octo Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+
+#include "plugin.h"
+#include "utils/common/common.h"
+
+#include "utils/cmds/listval.h"
+#include "utils/cmds/parse_option.h"
+#include "utils_cache.h"
+
+cmd_status_t cmd_parse_listval(size_t argc, char **argv,
+                               const cmd_options_t *opts
+                               __attribute__((unused)),
+                               cmd_error_handler_t *err) {
+  if (argc != 0) {
+    cmd_error(CMD_PARSE_ERROR, err, "Garbage after end of command: `%s'.",
+              argv[0]);
+    return CMD_PARSE_ERROR;
+  }
+
+  return CMD_OK;
+} /* cmd_status_t cmd_parse_listval */
+
+#define free_everything_and_return(status)                                     \
+  do {                                                                         \
+    for (size_t j = 0; j < number; j++) {                                      \
+      sfree(names[j]);                                                         \
+      names[j] = NULL;                                                         \
+    }                                                                          \
+    sfree(names);                                                              \
+    sfree(times);                                                              \
+    return status;                                                             \
+  } while (0)
+
+#define print_to_socket(fh, ...)                                               \
+  do {                                                                         \
+    if (fprintf(fh, __VA_ARGS__) < 0) {                                        \
+      WARNING("handle_listval: failed to write to socket #%i: %s", fileno(fh), \
+              STRERRNO);                                                       \
+      free_everything_and_return(CMD_ERROR);                                   \
+    }                                                                          \
+    fflush(fh);                                                                \
+  } while (0)
+
+cmd_status_t cmd_handle_listval(FILE *fh, char *buffer) {
+  cmd_error_handler_t err = {cmd_error_fh, fh};
+  cmd_status_t status;
+  cmd_t cmd;
+
+  char **names = NULL;
+  cdtime_t *times = NULL;
+  size_t number = 0;
+
+  DEBUG("utils_cmd_listval: handle_listval (fh = %p, buffer = %s);", (void *)fh,
+        buffer);
+
+  if ((status = cmd_parse(buffer, &cmd, NULL, &err)) != CMD_OK)
+    return status;
+  if (cmd.type != CMD_LISTVAL) {
+    cmd_error(CMD_UNKNOWN_COMMAND, &err, "Unexpected command: `%s'.",
+              CMD_TO_STRING(cmd.type));
+    free_everything_and_return(CMD_UNKNOWN_COMMAND);
+  }
+
+  status = uc_get_names(&names, &times, &number);
+  if (status != 0) {
+    DEBUG("command listval: uc_get_names failed with status %i", status);
+    cmd_error(CMD_ERROR, &err, "uc_get_names failed.");
+    free_everything_and_return(CMD_ERROR);
+  }
+
+  print_to_socket(fh, "%i Value%s found\n", (int)number,
+                  (number == 1) ? "" : "s");
+  for (size_t i = 0; i < number; i++)
+    print_to_socket(fh, "%.3f %s\n", CDTIME_T_TO_DOUBLE(times[i]), names[i]);
+
+  free_everything_and_return(CMD_OK);
+} /* cmd_status_t cmd_handle_listval */