diff --git a/src/configfile.c b/src/configfile.c
index f93eda02fee007c6a47a559295488ccb030fed40..988f7312b1fca159cffac54dfbc99ddbdc302fc9 100644 (file)
--- a/src/configfile.c
+++ b/src/configfile.c
* Florian octo Forster <octo at verplant.org>
**/
-/*
- * FIXME:
- * - remove all (I mean *ALL*) calls to `fprintf': `stderr' will have been
- * closed.
- */
+/* TODO
+ * make internal-only functions `static' */
#include "collectd.h"
#include "libconfig/libconfig.h"
+#include "plugin.h"
#include "configfile.h"
#include "utils_debug.h"
#define ERR_NEEDS_ARG "Section `%s' needs an argument.\n"
#define ERR_NEEDS_SECTION "`%s' can only be used within a section.\n"
+#ifdef HAVE_LIBRRD
+extern int operating_mode;
+#else
+static int operating_mode = MODE_CLIENT;
+#endif
+
typedef struct cf_callback
{
char *type;
static cf_callback_t *first_callback = NULL;
+typedef struct cf_mode_item
+{
+ char *key;
+ char *value;
+ int mode;
+} cf_mode_item_t;
+
+/* TODO
+ * - LogFile
+ */
+static cf_mode_item_t cf_mode_list[] =
+{
+ {"Server", NULL, MODE_CLIENT },
+ {"Port", NULL, MODE_CLIENT | MODE_SERVER },
+ {"PIDFile", NULL, MODE_CLIENT | MODE_SERVER | MODE_LOCAL},
+ {"DataDir", NULL, MODE_SERVER | MODE_SERVER | MODE_LOCAL},
+ {"LogFile", NULL, MODE_SERVER | MODE_SERVER | MODE_LOCAL}
+};
+static int cf_mode_num = 5;
+
static int nesting_depth = 0;
static char *current_module = NULL;
-/* cf_register needs this prototype */
-int cf_callback_general (const char *, const char *, const char *,
+/* `cf_register' needs this prototype */
+int cf_callback_plugin_dispatch (const char *, const char *, const char *,
const char *, lc_flags_t, void *);
/*
- * Functions to handle register/unregister, search, ...
+ * Functions to handle register/unregister, search, and other plugin related
+ * stuff
*/
cf_callback_t *cf_search (char *type)
{
int ret;
int i;
+ DBG ("type = %s, key = %s, value = %s", type, orig_key, orig_value);
+
if ((cf_cb = cf_search (type)) == NULL)
{
- fprintf (stderr, "Plugin `%s' did not register a callback.\n", type);
+ syslog (LOG_WARNING, "Plugin `%s' did not register a callback.\n", type);
return (-1);
}
for (i = 0; i < cf_cb->keys_num; i++)
{
if (strcasecmp (cf_cb->keys[i], key) == 0)
+ {
ret = (*cf_cb->callback) (key, value);
+ break;
+ }
}
if (i >= cf_cb->keys_num)
- fprintf (stderr, "Plugin `%s' did not register for value `%s'.\n", type, key);
+ syslog (LOG_WARNING, "Plugin `%s' did not register for value `%s'.\n", type, key);
free (key);
free (value);
for (i = 0; i < keys_num; i++)
{
- if (snprintf (buf, 64, "Module.%s", keys[i]) < 64)
+ if (snprintf (buf, 64, "Plugin.%s", keys[i]) < 64)
{
/* This may be called multiple times for the same
* `key', but apparently `lc_register_*' can handle
* it.. */
lc_register_callback (buf, SHORTOPT_NONE,
- LC_VAR_STRING, cf_callback_general,
+ LC_VAR_STRING, cf_callback_plugin_dispatch,
NULL);
}
else
}
}
-/*
- * Functions for the actual parsing
+/*
+ * Other query functions
+ */
+char *cf_get_option (const char *key, char *def)
+{
+ int i;
+
+ for (i = 0; i < cf_mode_num; i++)
+ {
+ if ((cf_mode_list[i].mode & operating_mode) == 0)
+ continue;
+
+ if (strcasecmp (cf_mode_list[i].key, key) != 0)
+ continue;
+
+ if (cf_mode_list[i].value != NULL)
+ return (cf_mode_list[i].value);
+ return (def);
+ }
+
+ return (NULL);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Functions for the actual parsing *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * `cf_callback_mode'
+ * Chose the `operating_mode'
+ *
+ * Mode `value'
*/
-int cf_callback_general (const char *shortvar, const char *var,
+int cf_callback_mode (const char *shortvar, const char *var,
const char *arguments, const char *value, lc_flags_t flags,
void *extra)
{
DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
shortvar, var, arguments, value);
- if ((nesting_depth == 0) || (current_module == NULL))
+ if (strcasecmp (value, "Client") == 0)
+ operating_mode = MODE_CLIENT;
+ else if (strcasecmp (value, "Server") == 0)
+ operating_mode = MODE_SERVER;
+ else if (strcasecmp (value, "Local") == 0)
+ operating_mode = MODE_LOCAL;
+ else
{
- fprintf (stderr, ERR_NEEDS_SECTION, shortvar);
+ syslog (LOG_ERR, "Invalid value for config option `Mode': `%s'", value);
return (LC_CBRET_ERROR);
}
- /* Send the data to the plugin */
- if (cf_dispatch (current_module, shortvar, value) < 0)
- return (LC_CBRET_ERROR);
+ return (LC_CBRET_OKAY);
+}
+
+/*
+ * `cf_callback_mode_plugindir'
+ * Change the plugin directory
+ *
+ * <Mode xxx>
+ * PluginDir `value'
+ * </Mode>
+ */
+int cf_callback_mode_plugindir (const char *shortvar, const char *var,
+ const char *arguments, const char *value, lc_flags_t flags,
+ void *extra)
+{
+ DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
+ shortvar, var, arguments, value);
+
+ plugin_set_dir (value);
return (LC_CBRET_OKAY);
}
-int cf_callback_section_mode (const char *shortvar, const char *var,
+int cf_callback_mode_option (const char *shortvar, const char *var,
const char *arguments, const char *value, lc_flags_t flags,
void *extra)
{
+ cf_mode_item_t *item;
+
DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
shortvar, var, arguments, value);
- if (flags == LC_FLAGS_SECTIONSTART)
+ if (extra == NULL)
{
- if (nesting_depth != 0)
- {
- fprintf (stderr, ERR_NOT_NESTED);
- return (LC_CBRET_ERROR);
- }
+ fprintf (stderr, "No extra..?\n");
+ return (LC_CBRET_ERROR);
+ }
- if (arguments == NULL)
- {
- fprintf (stderr, ERR_NEEDS_ARG, shortvar);
- return (LC_CBRET_ERROR);
- }
+ item = (cf_mode_item_t *) extra;
- nesting_depth++;
+ if (strcasecmp (item->key, shortvar))
+ {
+ fprintf (stderr, "Wrong extra..\n");
+ return (LC_CBRET_ERROR);
+ }
- if (((operating_mode == MODE_CLIENT)
- && (strcasecmp (arguments, "Client") == 0))
- || ((operating_mode == MODE_SERVER)
- && (strcasecmp (arguments, "Server") == 0))
- || ((operating_mode == MODE_LOCAL)
- && (strcasecmp (arguments, "Local") == 0)))
- {
- return (LC_CBRET_OKAY);
- }
- else
- {
- return (LC_CBRET_IGNORESECTION);
- }
+ if ((operating_mode & item->mode) == 0)
+ {
+ fprintf (stderr, "Option `%s' is not valid in this mode!\n", shortvar);
+ return (LC_CBRET_ERROR);
}
- else if (flags == LC_FLAGS_SECTIONEND)
+
+ if (item->value != NULL)
{
- nesting_depth--;
+ free (item->value);
+ item->value = NULL;
+ }
- return (LC_CBRET_OKAY);
+ if ((item->value = strdup (value)) == NULL)
+ {
+ perror ("strdup");
+ return (LC_CBRET_ERROR);
}
+
+ return (LC_CBRET_OKAY);
+}
+
+/*
+ * `cf_callback_mode_loadmodule':
+ * Load a plugin.
+ *
+ * <Mode xxx>
+ * LoadPlugin `value'
+ * </Mode>
+ */
+int cf_callback_mode_loadmodule (const char *shortvar, const char *var,
+ const char *arguments, const char *value, lc_flags_t flags,
+ void *extra)
+{
+ DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
+ shortvar, var, arguments, value);
+
+ if (plugin_load (value))
+ syslog (LOG_ERR, "plugin_load (%s): failed to load plugin", value);
+
+ /* Return `okay' even if there was an error, because it's not a syntax
+ * problem.. */
+ return (LC_CBRET_OKAY);
+}
+
+/*
+ * `cf_callback_mode_switch'
+ * Change the contents of the global variable `operating_mode'
+ *
+ * This should be command line options. One *can* do this in the config
+ * files, but I will not document this. Don't whine abount it not working as
+ * you expect if you do it anyways.
+ */
+int cf_callback_mode_switch (const char *shortvar, const char *var,
+ const char *arguments, const char *value, lc_flags_t flags,
+ void *extra)
+{
+ DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
+ shortvar, var, arguments, value);
+
+ if (strcasecmp (shortvar, "Client") == 0)
+ operating_mode = MODE_CLIENT;
+ else if (strcasecmp (shortvar, "Local") == 0)
+ operating_mode = MODE_LOCAL;
+ else if (strcasecmp (shortvar, "Server") == 0)
+ operating_mode = MODE_SERVER;
else
{
- fprintf (stderr, ERR_SECTION_ONLY, shortvar);
+ fprintf (stderr, "cf_callback_mode_switch: Wrong mode!\n");
return (LC_CBRET_ERROR);
}
+ return (LC_CBRET_OKAY);
}
-int cf_callback_section_module (const char *shortvar, const char *var,
+/*
+ * `cf_callback_plugin'
+ * Start/end section `plugin'
+ *
+ * <Plugin `arguments'>
+ * ...
+ * </Plugin>
+ */
+int cf_callback_plugin (const char *shortvar, const char *var,
const char *arguments, const char *value, lc_flags_t flags,
void *extra)
{
if (current_module != NULL)
{
free (current_module);
- current_module == NULL;
+ current_module = NULL;
}
nesting_depth--;
}
}
-int cf_callback_loadmodule (const char *shortvar, const char *var,
+/*
+ * `cf_callback_plugin_dispatch'
+ * Send options within `plugin' sections to the plugin that requests it.
+ *
+ * <Plugin `current_module'>
+ * `var' `value'
+ * </Plugin>
+ */
+int cf_callback_plugin_dispatch (const char *shortvar, const char *var,
const char *arguments, const char *value, lc_flags_t flags,
void *extra)
{
DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
shortvar, var, arguments, value);
- if (nesting_depth == 0)
+ if ((nesting_depth == 0) || (current_module == NULL))
{
fprintf (stderr, ERR_NEEDS_SECTION, shortvar);
return (LC_CBRET_ERROR);
}
- /*
- * TODO:
- * - Write wrapper around `plugin_load' to resolve path/filename
- * - Call this new, public function here
- */
- DBG ("Implement me, idiot!");
+ /* Send the data to the plugin */
+ if (cf_dispatch (current_module, shortvar, value) < 0)
+ return (LC_CBRET_ERROR);
return (LC_CBRET_OKAY);
}
+void cf_init (void)
+{
+ static int run_once = 0;
+ int i;
+
+ if (run_once != 0)
+ return;
+ run_once = 1;
+
+ lc_register_callback ("Mode", SHORTOPT_NONE, LC_VAR_STRING,
+ cf_callback_mode, NULL);
+ lc_register_callback ("Plugin", SHORTOPT_NONE, LC_VAR_SECTION,
+ cf_callback_plugin, NULL);
+
+ lc_register_callback ("PluginDir", SHORTOPT_NONE,
+ LC_VAR_STRING, cf_callback_mode_plugindir, NULL);
+ lc_register_callback ("LoadPlugin", SHORTOPT_NONE,
+ LC_VAR_STRING, cf_callback_mode_loadmodule, NULL);
+
+ for (i = 0; i < cf_mode_num; i++)
+ {
+ cf_mode_item_t *item;
+
+ item = &cf_mode_list[i];
+
+ lc_register_callback (item->key, SHORTOPT_NONE, LC_VAR_STRING,
+ cf_callback_mode_option, (void *) item);
+ }
+}
+
int cf_read (char *filename)
{
+ cf_init ();
+
if (filename == NULL)
filename = CONFIGFILE;
- lc_register_callback ("Mode", SHORTOPT_NONE, LC_VAR_SECTION,
- cf_callback_section_mode, NULL);
- lc_register_callback ("Module", SHORTOPT_NONE, LC_VAR_SECTION,
- cf_callback_section_module, NULL);
-
- /*
- * TODO:
- * - Add more directives, such as `DefaultMode', `DataDir', `PIDFile', ...
- */
-
- lc_register_callback ("Mode.LoadModule", SHORTOPT_NONE,
- LC_VAR_STRING, cf_callback_loadmodule,
- NULL);
+ DBG ("Starting to parse file `%s'", filename);
+ /* int lc_process_file(const char *appname, const char *pathname, lc_conf_type_t type); */
if (lc_process_file ("collectd", filename, LC_CONF_APACHE))
{
- /* FIXME: Use syslog here */
- fprintf (stderr, "Error loading config file `%s': %s\n",
- filename, lc_geterrstr ());
+ syslog (LOG_ERR, "lc_process_file (%s): %s", filename, lc_geterrstr ());
return (-1);
}
+ DBG ("Done parsing file `%s'", filename);
+
/* free memory and stuff */
lc_cleanup ();