static filter_context_constructor_t ctx_constructors[FTK_count];
static filter_context_destructor_t ctx_destructors[FTK_count];
+static filter_async_handler_t async_handler = NULL;
static const filter_hook_t default_hook = {
.type = 0,
.value = (char*)"DUNNO",
+ .counter = -1,
+ .cost = 0,
.postfix = true,
.async = false,
.filter_id = 0
static const filter_hook_t async_hook = {
.type = 0,
.value = NULL,
+ .counter = -1,
+ .cost = 0,
.postfix = false,
.async = true,
.filter_id = 0
};
+uint32_t filter_running = 0;
+
filter_type_t filter_register(const char *type, filter_constructor_t constructor,
filter_destructor_t destructor, filter_runner_t runner,
filter_context_constructor_t context_constructor,
return tok;
}
+void filter_async_handler_register(filter_async_handler_t handler)
+{
+ async_handler = handler;
+}
+
bool filter_build(filter_t *filter)
{
bool ret = true;
p_delete(&filter->name);
}
-const filter_hook_t *filter_run(const filter_t *filter, const query_t *query,
- filter_context_t *context)
+static inline const filter_hook_t *filter_hook_for_result(const filter_t *filter,
+ filter_result_t res)
{
int start = 0;
int end = filter->hooks.len;
- debug("running filter %s (%s)", filter->name, ftokens[filter->type]);
- filter_result_t res = runners[filter->type](filter, query, context);
- context->current_filter = NULL;
-
- debug("filter run, result is %s", htokens[res]);
if (res == HTK_ABORT) {
return NULL;
}
if (res == HTK_ASYNC) {
- context->current_filter = filter;
return &async_hook;
}
return &default_hook;
}
+const filter_hook_t *filter_run(const filter_t *filter, const query_t *query,
+ filter_context_t *context)
+{
+ debug("running filter %s (%s)", filter->name, ftokens[filter->type]);
+ ++filter_running;
+ filter_result_t res = runners[filter->type](filter, query, context);
+
+ if (res == HTK_ASYNC) {
+ context->current_filter = filter;
+ } else {
+ --filter_running;
+ context->current_filter = NULL;
+ }
+
+ debug("filter run, result is %s", htokens[res]);
+ return filter_hook_for_result(filter, res);
+}
+
bool filter_test(const filter_t *filter, const query_t *query,
filter_context_t *context, filter_result_t result)
{
const char *value, int value_len)
{
filter_hook_t hook;
+ hook.filter_id = -1;
hook.type = hook_tokenize(name, name_len);
if (hook.type == HTK_UNKNOWN) {
err("unknown hook type %.*s", name_len, name);
return false;
}
hook.async = false;
+
+ /* Value format is (counter:id:incr)?(postfix:reply|filter_name)
+ */
+ hook.value = NULL;
+ if (strncmp(value, "counter:", 8) == 0) {
+ char *end = NULL;
+ value += 8;
+ hook.counter = strtol(value, &end, 10);
+ if (end == value || *end != ':') {
+ err("hook %s, cannot read counter id", htokens[hook.type]);
+ return false;
+ } else if (hook.counter < 0 || hook.counter >= MAX_COUNTERS) {
+ err("hook %s, invalid counter id %d", htokens[hook.type], hook.counter);
+ return false;
+ }
+ value = end + 1;
+ hook.cost = strtol(value, &end, 10);
+ if (end == value || *end != ':') {
+ err("hook %s, cannot read counter increment", htokens[hook.type]);
+ return false;
+ } else if (hook.cost < 0) {
+ err("hook %s, invalid counter increment value %d", htokens[hook.type],
+ hook.cost);
+ return false;
+ }
+ value = end + 1;
+ } else {
+ hook.counter = -1;
+ hook.cost = 0;
+ }
hook.postfix = (strncmp(value, "postfix:", 8) == 0);
+ if (hook.postfix && query_format(NULL, 0, value + 8, NULL) == -1) {
+ err("invalid formatted text \"%s\"", value + 8);
+ return false;
+ }
hook.value = m_strdup(hook.postfix ? value + 8 : value);
- hook.filter_id = -1;
array_add(filter->hooks, hook);
return true;
}
}
}
}
+
+void filter_context_clean(filter_context_t *context)
+{
+ p_clear(&context->counters, 1);
+ context->instance[0] = '\0';
+}
+
+void filter_post_async_result(filter_context_t *context, filter_result_t result)
+{
+ const filter_t *filter = context->current_filter;
+ const filter_hook_t *hook = NULL;
+
+ if (result == HTK_ASYNC) {
+ return;
+ }
+ --filter_running;
+ hook = filter_hook_for_result(filter, result);
+ async_handler(context, hook);
+}