struct tr_action_s {
regex_t re;
char *replacement;
- int may_be_empty;
+ _Bool may_be_empty;
tr_action_t *next;
};
+struct tr_meta_data_action_s;
+typedef struct tr_meta_data_action_s tr_meta_data_action_t;
+struct tr_meta_data_action_s {
+ char *key;
+ regex_t re;
+ char *replacement;
+
+ tr_meta_data_action_t *next;
+};
+
struct tr_data_s {
tr_action_t *host;
tr_action_t *plugin;
tr_action_t *plugin_instance;
/* tr_action_t *type; */
tr_action_t *type_instance;
+ tr_meta_data_action_t *meta;
};
typedef struct tr_data_s tr_data_t;
char *dest;
if (orig == NULL)
- return (NULL);
+ return NULL;
sz = strlen(orig) + 1;
dest = malloc(sz);
if (dest == NULL)
- return (NULL);
+ return NULL;
memcpy(dest, orig, sz);
- return (dest);
+ return dest;
} /* }}} char *tr_strdup */
static void tr_action_destroy(tr_action_t *act) /* {{{ */
sfree(act);
} /* }}} void tr_action_destroy */
+static void tr_meta_data_action_destroy(tr_meta_data_action_t *act) /* {{{ */
+{
+ if (act == NULL)
+ return;
+
+ sfree(act->key);
+ regfree(&act->re);
+ sfree(act->replacement);
+
+ if (act->next != NULL)
+ tr_meta_data_action_destroy(act->next);
+
+ sfree(act);
+} /* }}} void tr_meta_data_action_destroy */
+
static int tr_config_add_action(tr_action_t **dest, /* {{{ */
- const oconfig_item_t *ci, int may_be_empty) {
+ const oconfig_item_t *ci, _Bool may_be_empty) {
tr_action_t *act;
int status;
if (dest == NULL)
- return (-EINVAL);
+ return -EINVAL;
if ((ci->values_num != 2) || (ci->values[0].type != OCONFIG_TYPE_STRING) ||
(ci->values[1].type != OCONFIG_TYPE_STRING)) {
ERROR("Target `replace': The `%s' option requires exactly two string "
"arguments.",
ci->key);
- return (-1);
+ return -1;
}
act = calloc(1, sizeof(*act));
if (act == NULL) {
ERROR("tr_config_add_action: calloc failed.");
- return (-ENOMEM);
+ return -ENOMEM;
}
act->replacement = NULL;
"failed: %s.",
ci->values[0].value.string, errbuf);
sfree(act);
- return (-EINVAL);
+ return -EINVAL;
}
act->replacement = tr_strdup(ci->values[1].value.string);
if (act->replacement == NULL) {
ERROR("tr_config_add_action: tr_strdup failed.");
- regfree(&act->re);
- sfree(act);
- return (-ENOMEM);
+ tr_action_destroy(act);
+ return -ENOMEM;
}
/* Insert action at end of list. */
prev->next = act;
}
- return (0);
+ return 0;
} /* }}} int tr_config_add_action */
+static int tr_config_add_meta_action(tr_meta_data_action_t **dest, /* {{{ */
+ const oconfig_item_t *ci,
+ _Bool should_delete) {
+ tr_meta_data_action_t *act;
+ int status;
+
+ if (dest == NULL)
+ return -EINVAL;
+
+ if (should_delete) {
+ if ((ci->values_num != 2) || (ci->values[0].type != OCONFIG_TYPE_STRING) ||
+ (ci->values[1].type != OCONFIG_TYPE_STRING)) {
+ ERROR("Target `replace': The `%s' option requires exactly two string "
+ "arguments.",
+ ci->key);
+ return -1;
+ }
+ } else {
+ if ((ci->values_num != 3) || (ci->values[0].type != OCONFIG_TYPE_STRING) ||
+ (ci->values[1].type != OCONFIG_TYPE_STRING) ||
+ (ci->values[2].type != OCONFIG_TYPE_STRING)) {
+ ERROR("Target `replace': The `%s' option requires exactly three string "
+ "arguments.",
+ ci->key);
+ return -1;
+ }
+ }
+
+ if (strlen(ci->values[0].value.string) == 0) {
+ ERROR("Target `replace': The `%s' option does not accept empty string as "
+ "first argument.",
+ ci->key);
+ return -1;
+ }
+
+ act = calloc(1, sizeof(*act));
+ if (act == NULL) {
+ ERROR("tr_config_add_meta_action: calloc failed.");
+ return -ENOMEM;
+ }
+
+ act->key = NULL;
+ act->replacement = NULL;
+
+ status = regcomp(&act->re, ci->values[1].value.string, REG_EXTENDED);
+ if (status != 0) {
+ char errbuf[1024] = "";
+
+ /* regerror assures null termination. */
+ regerror(status, &act->re, errbuf, sizeof(errbuf));
+ ERROR("Target `replace': Compiling the regular expression `%s' "
+ "failed: %s.",
+ ci->values[1].value.string, errbuf);
+ sfree(act->key);
+ sfree(act);
+ return -EINVAL;
+ }
+
+ act->key = tr_strdup(ci->values[0].value.string);
+ if (act->key == NULL) {
+ ERROR("tr_config_add_meta_action: tr_strdup failed.");
+ tr_meta_data_action_destroy(act);
+ return -ENOMEM;
+ }
+
+ if (!should_delete) {
+ act->replacement = tr_strdup(ci->values[2].value.string);
+ if (act->replacement == NULL) {
+ ERROR("tr_config_add_meta_action: tr_strdup failed.");
+ tr_meta_data_action_destroy(act);
+ return -ENOMEM;
+ }
+ }
+
+ /* Insert action at end of list. */
+ if (*dest == NULL)
+ *dest = act;
+ else {
+ tr_meta_data_action_t *prev;
+
+ prev = *dest;
+ while (prev->next != NULL)
+ prev = prev->next;
+
+ prev->next = act;
+ }
+
+ return 0;
+} /* }}} int tr_config_add_meta_action */
+
static int tr_action_invoke(tr_action_t *act_head, /* {{{ */
char *buffer_in, size_t buffer_in_size,
- int may_be_empty) {
+ _Bool may_be_empty) {
int status;
char buffer[DATA_MAX_NAME_LEN];
regmatch_t matches[8] = {[0] = {0}};
if (act_head == NULL)
- return (-EINVAL);
+ return -EINVAL;
sstrncpy(buffer, buffer_in, sizeof(buffer));
subst_status = subst(temp, sizeof(temp), buffer, (size_t)matches[0].rm_so,
(size_t)matches[0].rm_eo, act->replacement);
if (subst_status == NULL) {
- ERROR("Target `replace': subst (buffer = %s, start = %zu, end = %zu, "
+ ERROR("Target `replace': subst (buffer = %s, start = %" PRIsz
+ ", end = %" PRIsz ", "
"replacement = %s) failed.",
buffer, (size_t)matches[0].rm_so, (size_t)matches[0].rm_eo,
act->replacement);
if ((may_be_empty == 0) && (buffer[0] == 0)) {
WARNING("Target `replace': Replacement resulted in an empty string, "
"which is not allowed for this buffer (`host' or `plugin').");
- return (0);
+ return 0;
}
DEBUG("target_replace plugin: tr_action_invoke: -> buffer = %s;", buffer);
sstrncpy(buffer_in, buffer, buffer_in_size);
- return (0);
+ return 0;
} /* }}} int tr_action_invoke */
+static int tr_meta_data_action_invoke(/* {{{ */
+ tr_meta_data_action_t *act_head,
+ meta_data_t **dest) {
+ int status;
+ regmatch_t matches[8] = {[0] = {0}};
+
+ if (act_head == NULL)
+ return -EINVAL;
+
+ if ((*dest) == NULL) /* nothing to do */
+ return 0;
+
+ for (tr_meta_data_action_t *act = act_head; act != NULL; act = act->next) {
+ char temp[DATA_MAX_NAME_LEN];
+ char *subst_status;
+ int value_type;
+ int meta_data_status;
+ char *value;
+ meta_data_t *result;
+
+ value_type = meta_data_type(*dest, act->key);
+ if (value_type == 0) /* not found */
+ continue;
+ if (value_type != MD_TYPE_STRING) {
+ WARNING("Target `replace': Attempting replace on metadata key `%s', "
+ "which isn't a string.",
+ act->key);
+ continue;
+ }
+
+ meta_data_status = meta_data_get_string(*dest, act->key, &value);
+ if (meta_data_status != 0) {
+ ERROR("Target `replace': Unable to retrieve metadata value for `%s'.",
+ act->key);
+ return meta_data_status;
+ }
+
+ DEBUG("target_replace plugin: tr_meta_data_action_invoke: `%s' "
+ "old value = `%s'",
+ act->key, value);
+
+ status = regexec(&act->re, value, STATIC_ARRAY_SIZE(matches), matches,
+ /* flags = */ 0);
+ if (status == REG_NOMATCH) {
+ sfree(value);
+ continue;
+ } else if (status != 0) {
+ char errbuf[1024] = "";
+
+ regerror(status, &act->re, errbuf, sizeof(errbuf));
+ ERROR("Target `replace': Executing a regular expression failed: %s.",
+ errbuf);
+ sfree(value);
+ continue;
+ }
+
+ if (act->replacement == NULL) {
+ /* no replacement; delete the key */
+ DEBUG("target_replace plugin: tr_meta_data_action_invoke: "
+ "deleting `%s'",
+ act->key);
+ meta_data_delete(*dest, act->key);
+ sfree(value);
+ continue;
+ }
+
+ subst_status = subst(temp, sizeof(temp), value, (size_t)matches[0].rm_so,
+ (size_t)matches[0].rm_eo, act->replacement);
+ if (subst_status == NULL) {
+ ERROR("Target `replace': subst (value = %s, start = %" PRIsz
+ ", end = %" PRIsz ", "
+ "replacement = %s) failed.",
+ value, (size_t)matches[0].rm_so, (size_t)matches[0].rm_eo,
+ act->replacement);
+ sfree(value);
+ continue;
+ }
+
+ DEBUG("target_replace plugin: tr_meta_data_action_invoke: `%s' "
+ "value `%s' -> `%s'",
+ act->key, value, temp);
+
+ if ((result = meta_data_create()) == NULL) {
+ ERROR("Target `replace': failed to create metadata for `%s'.", act->key);
+ sfree(value);
+ return -ENOMEM;
+ }
+
+ meta_data_status = meta_data_add_string(result, act->key, temp);
+ if (meta_data_status != 0) {
+ ERROR("Target `replace': Unable to set metadata value for `%s'.",
+ act->key);
+ meta_data_destroy(result);
+ sfree(value);
+ return meta_data_status;
+ }
+
+ meta_data_clone_merge(dest, result);
+ meta_data_destroy(result);
+ sfree(value);
+ } /* for (act = act_head; act != NULL; act = act->next) */
+
+ return 0;
+} /* }}} int tr_meta_data_action_invoke */
+
static int tr_destroy(void **user_data) /* {{{ */
{
tr_data_t *data;
if (user_data == NULL)
- return (-EINVAL);
+ return -EINVAL;
data = *user_data;
if (data == NULL)
- return (0);
+ return 0;
tr_action_destroy(data->host);
tr_action_destroy(data->plugin);
tr_action_destroy(data->plugin_instance);
/* tr_action_destroy (data->type); */
tr_action_destroy(data->type_instance);
+ tr_meta_data_action_destroy(data->meta);
sfree(data);
- return (0);
+ return 0;
} /* }}} int tr_destroy */
static int tr_create(const oconfig_item_t *ci, void **user_data) /* {{{ */
data = calloc(1, sizeof(*data));
if (data == NULL) {
ERROR("tr_create: calloc failed.");
- return (-ENOMEM);
+ return -ENOMEM;
}
data->host = NULL;
data->plugin_instance = NULL;
/* data->type = NULL; */
data->type_instance = NULL;
+ data->meta = NULL;
status = 0;
for (int i = 0; i < ci->children_num; i++) {
else if (strcasecmp("TypeInstance", child->key) == 0)
status = tr_config_add_action(&data->type_instance, child,
/* may be empty = */ 1);
+ else if (strcasecmp("MetaData", child->key) == 0)
+ status = tr_config_add_meta_action(&data->meta, child,
+ /* should delete = */ 0);
+ else if (strcasecmp("DeleteMetaData", child->key) == 0)
+ status = tr_config_add_meta_action(&data->meta, child,
+ /* should delete = */ 1);
else {
ERROR("Target `replace': The `%s' configuration option is not understood "
"and will be ignored.",
if ((data->host == NULL) && (data->plugin == NULL) &&
(data->plugin_instance == NULL)
/* && (data->type == NULL) */
- && (data->type_instance == NULL)) {
+ && (data->type_instance == NULL) && (data->meta == NULL)) {
ERROR("Target `replace': You need to set at least one of `Host', "
"`Plugin', `PluginInstance' or `TypeInstance'.");
status = -1;
if (status != 0) {
tr_destroy((void *)&data);
- return (status);
+ return status;
}
*user_data = data;
- return (0);
+ return 0;
} /* }}} int tr_create */
static int tr_invoke(const data_set_t *ds, value_list_t *vl, /* {{{ */
tr_data_t *data;
if ((ds == NULL) || (vl == NULL) || (user_data == NULL))
- return (-EINVAL);
+ return -EINVAL;
data = *user_data;
if (data == NULL) {
ERROR("Target `replace': Invoke: `data' is NULL.");
- return (-EINVAL);
+ return -EINVAL;
+ }
+
+ if (data->meta != NULL) {
+ tr_meta_data_action_invoke(data->meta, &(vl->meta));
}
#define HANDLE_FIELD(f, e) \
HANDLE_FIELD(host, 0);
HANDLE_FIELD(plugin, 0);
HANDLE_FIELD(plugin_instance, 1);
- /* HANDLE_FIELD (type); */
+ /* HANDLE_FIELD (type, 0); */
HANDLE_FIELD(type_instance, 1);
- return (FC_TARGET_CONTINUE);
+ return FC_TARGET_CONTINUE;
} /* }}} int tr_invoke */
void module_register(void) {
tproc.invoke = tr_invoke;
fc_register_target("replace", tproc);
} /* module_register */
-
-/* vim: set sw=2 sts=2 tw=78 et fdm=marker : */
projects / collectd.git / blobdiff