+++ /dev/null
-/**
- * collectd - src/utils_cmds.h
- * Copyright (C) 2016 Sebastian 'tokkee' Harl
- *
- * 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:
- * Sebastian 'tokkee' Harl <sh at tokkee.org>
- **/
-
-#ifndef UTILS_CMDS_H
-#define UTILS_CMDS_H 1
-
-#include "plugin.h"
-
-#include <stdarg.h>
-
-typedef enum {
- CMD_UNKNOWN = 0,
- CMD_FLUSH = 1,
- CMD_GETVAL = 2,
- CMD_LISTVAL = 3,
- CMD_PUTVAL = 4,
-} cmd_type_t;
-#define CMD_TO_STRING(type) \
- ((type) == CMD_FLUSH) ? "FLUSH" \
- : ((type) == CMD_GETVAL) ? "GETVAL" \
- : ((type) == CMD_LISTVAL) ? "LISTVAL" \
- : ((type) == CMD_PUTVAL) ? "PUTVAL" \
- : "UNKNOWN"
-
-typedef struct {
- double timeout;
-
- char **plugins;
- size_t plugins_num;
- identifier_t *identifiers;
- size_t identifiers_num;
-} cmd_flush_t;
-
-typedef struct {
- char *raw_identifier;
- identifier_t identifier;
-} cmd_getval_t;
-
-typedef struct {
-} cmd_listval_t;
-
-typedef struct {
- /* The raw identifier as provided by the user. */
- char *raw_identifier;
-
- /* An array of the fully parsed identifier and all value lists, and their
- * options as provided by the user. */
- value_list_t *vl;
- size_t vl_num;
-} cmd_putval_t;
-
-/*
- * NAME
- * cmd_t
- *
- * DESCRIPTION
- * The representation of a fully parsed command.
- */
-typedef struct {
- cmd_type_t type;
- union {
- cmd_flush_t flush;
- cmd_getval_t getval;
- cmd_listval_t listval;
- cmd_putval_t putval;
- } cmd;
-} cmd_t;
-
-/*
- * NAME
- * cmd_options_t
- *
- * DESCRIPTIONS
- * Optional settings for tuning the parser behavior.
- */
-typedef struct {
- /* identifier_default_host: If non-NULL, the hostname is optional and will
- * default to the specified value. */
- char *identifier_default_host;
-} cmd_options_t;
-
-/*
- * NAME
- * cmd_status_t
- *
- * DESCRIPTION
- * Status codes describing the parse result.
- */
-typedef enum {
- CMD_OK = 0,
- CMD_ERROR = -1,
- CMD_PARSE_ERROR = -2,
- CMD_UNKNOWN_COMMAND = -3,
-
- /* Not necessarily fatal errors. */
- CMD_NO_OPTION = 1,
-} cmd_status_t;
-
-/*
- * NAME
- * cmd_error_handler_t
- *
- * DESCRIPTION
- * An error handler describes a callback to be invoked when the parser
- * encounters an error. The user data pointer will be passed to the callback
- * as the first argument.
- */
-typedef struct {
- void (*cb) (void *, cmd_status_t, const char *, va_list);
- void *ud;
-} cmd_error_handler_t;
-
-/*
- * NAME:
- * cmd_error
- *
- * DESCRIPTION
- * Reports an error via the specified error handler (if set).
- */
-void cmd_error (cmd_status_t status, cmd_error_handler_t *err,
- const char *format, ...);
-
-/*
- * NAME
- * cmd_parse
- *
- * DESCRIPTION
- * Parse a command string and populate a command object.
- *
- * PARAMETERS
- * `buffer' The command string to be parsed.
- * `ret_cmd' The parse result will be stored at this location.
- * `opts' Parser options. If NULL, defaults will be used.
- * `err' An optional error handler to invoke on error.
- *
- * RETURN VALUE
- * CMD_OK on success or the respective error code otherwise.
- */
-cmd_status_t cmd_parse (char *buffer, cmd_t *ret_cmd,
- const cmd_options_t *opts, cmd_error_handler_t *err);
-
-cmd_status_t cmd_parsev (size_t argc, char **argv, cmd_t *ret_cmd,
- const cmd_options_t *opts, cmd_error_handler_t *err);
-
-void cmd_destroy (cmd_t *cmd);
-
-/*
- * NAME
- * cmd_parse_option
- *
- * DESCRIPTION
- * Parses a command option which must be of the form:
- * name=value with \ and spaces
- *
- * PARAMETERS
- * `field' The parsed input field with any quotes removed and special
- * characters unescaped.
- * `ret_key' The parsed key will be stored at this location.
- * `ret_value' The parsed value will be stored at this location.
- *
- * RETURN VALUE
- * CMD_OK on success or an error code otherwise.
- * CMD_NO_OPTION if `field' does not represent an option at all (missing
- * equal sign).
- */
-cmd_status_t cmd_parse_option (char *field,
- char **ret_key, char **ret_value, cmd_error_handler_t *err);
-
-/*
- * NAME
- * cmd_error_fh
- *
- * DESCRIPTION
- * An error callback writing the message to an open file handle using the
- * format expected by the unixsock or exec plugins.
- *
- * PARAMETERS
- * `ud' Error handler user-data pointer. This must be an open
- * file-handle (FILE *).
- * `status' The error status code.
- * `format' Printf-style format string.
- * `ap' Variable argument list providing the arguments for the format
- * string.
- */
-void cmd_error_fh (void *ud, cmd_status_t status,
- const char *format, va_list ap);
-
-#endif /* UTILS_CMDS_H */
projects / collectd.git / blobdiff