#include "plugin.h"
#include "utils_cache.h"
-#include "utils_parse_option.h"
#include "utils_cmd_getval.h"
+#include "utils_parse_option.h"
-#define print_to_socket(fh, ...) \
- do { \
- if (fprintf (fh, __VA_ARGS__) < 0) { \
- char errbuf[1024]; \
- WARNING ("handle_getval: failed to write to socket #%i: %s", \
- fileno (fh), sstrerror (errno, errbuf, sizeof (errbuf))); \
- return -1; \
- } \
- fflush(fh); \
- } while (0)
-
-int handle_getval (FILE *fh, char *buffer)
-{
- char *command;
- char *identifier;
+cmd_status_t cmd_parse_getval(size_t argc, char **argv,
+ cmd_getval_t *ret_getval,
+ const cmd_options_t *opts,
+ cmd_error_handler_t *err) {
char *identifier_copy;
+ int status;
- char *hostname;
- char *plugin;
- char *plugin_instance;
- char *type;
- char *type_instance;
- gauge_t *values;
- size_t values_num;
-
- const data_set_t *ds;
-
- int status;
-
- if ((fh == NULL) || (buffer == NULL))
- return (-1);
-
- DEBUG ("utils_cmd_getval: handle_getval (fh = %p, buffer = %s);",
- (void *) fh, buffer);
-
- command = NULL;
- status = parse_string (&buffer, &command);
- if (status != 0)
- {
- print_to_socket (fh, "-1 Cannot parse command.\n");
- return (-1);
+ if ((ret_getval == NULL) || (opts == NULL)) {
+ errno = EINVAL;
+ cmd_error(CMD_ERROR, err, "Invalid arguments to cmd_parse_getval.");
+ return CMD_ERROR;
}
- assert (command != NULL);
- if (strcasecmp ("GETVAL", command) != 0)
- {
- print_to_socket (fh, "-1 Unexpected command: `%s'.\n", command);
- return (-1);
+ if (argc != 1) {
+ if (argc == 0)
+ cmd_error(CMD_PARSE_ERROR, err, "Missing identifier.");
+ else
+ cmd_error(CMD_PARSE_ERROR, err, "Garbage after identifier: `%s'.",
+ argv[1]);
+ return CMD_PARSE_ERROR;
}
- identifier = NULL;
- status = parse_string (&buffer, &identifier);
- if (status != 0)
- {
- print_to_socket (fh, "-1 Cannot parse identifier.\n");
- return (-1);
+ /* parse_identifier() modifies its first argument,
+ * returning pointers into it */
+ identifier_copy = sstrdup(argv[0]);
+
+ status = parse_identifier(
+ argv[0], &ret_getval->identifier.host, &ret_getval->identifier.plugin,
+ &ret_getval->identifier.plugin_instance, &ret_getval->identifier.type,
+ &ret_getval->identifier.type_instance, opts->identifier_default_host);
+ if (status != 0) {
+ DEBUG("cmd_parse_getval: Cannot parse identifier `%s'.", identifier_copy);
+ cmd_error(CMD_PARSE_ERROR, err, "Cannot parse identifier `%s'.",
+ identifier_copy);
+ sfree(identifier_copy);
+ return CMD_PARSE_ERROR;
}
- assert (identifier != NULL);
- if (*buffer != 0)
- {
- print_to_socket (fh, "-1 Garbage after end of command: %s\n", buffer);
- return (-1);
- }
+ ret_getval->raw_identifier = identifier_copy;
+ return CMD_OK;
+} /* cmd_status_t cmd_parse_getval */
+
+#define print_to_socket(fh, ...) \
+ do { \
+ if (fprintf(fh, __VA_ARGS__) < 0) { \
+ char errbuf[1024]; \
+ WARNING("cmd_handle_getval: failed to write to socket #%i: %s", \
+ fileno(fh), sstrerror(errno, errbuf, sizeof(errbuf))); \
+ return -1; \
+ } \
+ fflush(fh); \
+ } while (0)
- /* parse_identifier() modifies its first argument,
- * returning pointers into it */
- identifier_copy = sstrdup (identifier);
-
- status = parse_identifier (identifier_copy, &hostname,
- &plugin, &plugin_instance,
- &type, &type_instance);
- if (status != 0)
- {
- DEBUG ("handle_getval: Cannot parse identifier `%s'.", identifier);
- print_to_socket (fh, "-1 Cannot parse identifier `%s'.\n", identifier);
- sfree (identifier_copy);
- return (-1);
+cmd_status_t cmd_handle_getval(FILE *fh, char *buffer) {
+ cmd_error_handler_t err = {cmd_error_fh, fh};
+ cmd_status_t status;
+ cmd_t cmd;
+
+ gauge_t *values;
+ size_t values_num;
+
+ const data_set_t *ds;
+
+ if ((fh == NULL) || (buffer == NULL))
+ return -1;
+
+ DEBUG("utils_cmd_getval: cmd_handle_getval (fh = %p, buffer = %s);",
+ (void *)fh, buffer);
+
+ if ((status = cmd_parse(buffer, &cmd, NULL, &err)) != CMD_OK)
+ return status;
+ if (cmd.type != CMD_GETVAL) {
+ cmd_error(CMD_UNKNOWN_COMMAND, &err, "Unexpected command: `%s'.",
+ CMD_TO_STRING(cmd.type));
+ cmd_destroy(&cmd);
+ return CMD_UNKNOWN_COMMAND;
}
- ds = plugin_get_ds (type);
- if (ds == NULL)
- {
- DEBUG ("handle_getval: plugin_get_ds (%s) == NULL;", type);
- print_to_socket (fh, "-1 Type `%s' is unknown.\n", type);
- sfree (identifier_copy);
- return (-1);
+ ds = plugin_get_ds(cmd.cmd.getval.identifier.type);
+ if (ds == NULL) {
+ DEBUG("cmd_handle_getval: plugin_get_ds (%s) == NULL;",
+ cmd.cmd.getval.identifier.type);
+ cmd_error(CMD_ERROR, &err, "Type `%s' is unknown.\n",
+ cmd.cmd.getval.identifier.type);
+ cmd_destroy(&cmd);
+ return -1;
}
values = NULL;
values_num = 0;
- status = uc_get_rate_by_name (identifier, &values, &values_num);
- if (status != 0)
- {
- print_to_socket (fh, "-1 No such value\n");
- sfree (identifier_copy);
- return (-1);
+ status =
+ uc_get_rate_by_name(cmd.cmd.getval.raw_identifier, &values, &values_num);
+ if (status != 0) {
+ cmd_error(CMD_ERROR, &err, "No such value.");
+ cmd_destroy(&cmd);
+ return CMD_ERROR;
}
- if (ds->ds_num != values_num)
- {
- ERROR ("ds[%s]->ds_num = %zu, "
- "but uc_get_rate_by_name returned %zu values.",
- ds->type, ds->ds_num, values_num);
- print_to_socket (fh, "-1 Error reading value from cache.\n");
- sfree (values);
- sfree (identifier_copy);
- return (-1);
+ if (ds->ds_num != values_num) {
+ ERROR("ds[%s]->ds_num = %zu, "
+ "but uc_get_rate_by_name returned %zu values.",
+ ds->type, ds->ds_num, values_num);
+ cmd_error(CMD_ERROR, &err, "Error reading value from cache.");
+ sfree(values);
+ cmd_destroy(&cmd);
+ return CMD_ERROR;
}
- print_to_socket (fh, "%zu Value%s found\n", values_num,
- (values_num == 1) ? "" : "s");
- for (size_t i = 0; i < values_num; i++)
- {
- print_to_socket (fh, "%s=", ds->ds[i].name);
- if (isnan (values[i]))
- {
- print_to_socket (fh, "NaN\n");
- }
- else
- {
- print_to_socket (fh, "%12e\n", values[i]);
+ print_to_socket(fh, "%zu Value%s found\n", values_num,
+ (values_num == 1) ? "" : "s");
+ for (size_t i = 0; i < values_num; i++) {
+ print_to_socket(fh, "%s=", ds->ds[i].name);
+ if (isnan(values[i])) {
+ print_to_socket(fh, "NaN\n");
+ } else {
+ print_to_socket(fh, "%12e\n", values[i]);
}
}
- sfree (values);
- sfree (identifier_copy);
+ sfree(values);
+ cmd_destroy(&cmd);
+
+ return CMD_OK;
+} /* cmd_status_t cmd_handle_getval */
- return (0);
-} /* int handle_getval */
+void cmd_destroy_getval(cmd_getval_t *getval) {
+ if (getval == NULL)
+ return;
-/* vim: set sw=2 sts=2 ts=8 : */
+ sfree(getval->raw_identifier);
+} /* void cmd_destroy_getval */
projects / collectd.git / blobdiff