bud_error_t bud_config_load_file(bud_config_t* config,
const char* path,
const char** out) {
bud_error_t err;
char* content;
/* Check if we already have cache entry */
content = bud_hashmap_get(&config->files.hashmap, path, strlen(path));
if (content != NULL) {
*out = content;
return bud_ok();
}
ASSERT(config->loop != NULL, "Loop should be present");
err = bud_read_file_by_path(config->loop, path, &content);
if (!bud_is_ok(err))
return err;
err = bud_hashmap_insert(&config->files.hashmap,
path,
strlen(path),
content);
if (!bud_is_ok(err)) {
free(content);
return err;
}
*out = content;
return bud_ok();
}
bud_error_t bud_config_load_backend(bud_config_t* config,
JSON_Object* obj,
bud_config_backend_t* backend,
bud_hashmap_t* map,
unsigned int* ext_count) {
bud_error_t err;
JSON_Value* val;
const char* external;
int r;
bud_config_load_addr(obj, (bud_config_addr_t*) backend);
backend->config = config;
backend->xforward = -1;
val = json_object_get_value(obj, "proxyline");
if (json_value_get_type(val) == JSONString) {
const char* pline;
pline = json_value_get_string(val);
if (strcmp(pline, "haproxy") == 0)
backend->proxyline = kBudProxylineHAProxy;
else if (strcmp(pline, "json") == 0)
backend->proxyline = kBudProxylineJSON;
else
return bud_error_dstr(kBudErrProxyline, pline);
} else {
backend->proxyline = val != NULL && json_value_get_boolean(val) ?
kBudProxylineHAProxy :
kBudProxylineNone;
}
val = json_object_get_value(obj, "x-forward");
if (val != NULL)
backend->xforward = json_value_get_boolean(val);
/* Set defaults here to use them in sni.c */
bud_config_set_backend_defaults(backend);
r = bud_config_str_to_addr(backend->host, backend->port, &backend->addr);
if (r != 0)
return bud_error_num(kBudErrPton, r);
external = json_object_get_string(obj, "external");
if (external == NULL)
return bud_ok();
/* Insert backend into a hashmap */
err = bud_hashmap_insert(map, external, strlen(external), backend);
if (!bud_is_ok(err))
return err;
(*ext_count)++;
return bud_ok();
}
bud_error_t bud_config_load(bud_config_t* config) {
int i;
bud_error_t err;
JSON_Value* json;
JSON_Value* val;
JSON_Object* frontend;
JSON_Object* obj;
JSON_Object* log;
JSON_Object* avail;
JSON_Array* contexts;
if (config->piped) {
char* content;
ASSERT(config->loop != NULL, "Loop should be present");
err = bud_read_file_by_fd(config->loop, 0, &content);
if (!bud_is_ok(err))
goto end;
err = bud_hashmap_insert(&config->files.hashmap,
kPipedConfigPath,
strlen(kPipedConfigPath),
content);
if (!bud_is_ok(err)) {
free(content);
goto end;
}
json = json_parse_string(content);
} else if (config->inlined) {
json = json_parse_string(config->path);
} else {
const char* contents;
err = bud_config_load_file(config, config->path, &contents);
if (!bud_is_ok(err))
goto end;
json = json_parse_string(contents);
}
if (json == NULL) {
err = bud_error_dstr(kBudErrJSONParse, config->path);
goto end;
}
obj = json_value_get_object(json);
if (obj == NULL) {
err = bud_error(kBudErrJSONNonObjectRoot);
goto failed_alloc_path;
}
err = bud_config_load_tracing(&config->trace,
json_object_get_object(obj, "tracing"));
if (!bud_is_ok(err))
goto failed_alloc_path;
/* Allocate contexts and backends */
contexts = json_object_get_array(obj, "contexts");
config->context_count = contexts == NULL ? 0 : json_array_get_count(contexts);
config->contexts = calloc(config->context_count + 1,
sizeof(*config->contexts));
if (config->contexts == NULL) {
err = bud_error_str(kBudErrNoMem, "bud_context_t");
goto failed_alloc_contexts;
}
config->json = json;
/* Workers configuration */
config->worker_count = -1;
config->restart_timeout = -1;
config->master_ipc = -1;
val = json_object_get_value(obj, "workers");
if (val != NULL)
config->worker_count = json_value_get_number(val);
val = json_object_get_value(obj, "restart_timeout");
if (val != NULL)
config->restart_timeout = json_value_get_number(val);
val = json_object_get_value(obj, "master_ipc");
if (val != NULL)
config->master_ipc = json_value_get_boolean(val);
/* Logger configuration */
log = json_object_get_object(obj, "log");
config->log.stdio = -1;
config->log.syslog = -1;
if (log != NULL) {
config->log.level = json_object_get_string(log, "level");
config->log.facility = json_object_get_string(log, "facility");
val = json_object_get_value(log, "stdio");
if (val != NULL)
config->log.stdio = json_value_get_boolean(val);
val = json_object_get_value(log, "syslog");
if (val != NULL)
config->log.syslog = json_value_get_boolean(val);
}
/* Availability configuration */
avail = json_object_get_object(obj, "availability");
config->availability.death_timeout = -1;
config->availability.revive_interval = -1;
config->availability.retry_interval = -1;
config->availability.max_retries = -1;
if (avail != NULL) {
val = json_object_get_value(avail, "death_timeout");
if (val != NULL)
config->availability.death_timeout = json_value_get_number(val);
val = json_object_get_value(avail, "revive_interval");
if (val != NULL)
config->availability.revive_interval = json_value_get_number(val);
val = json_object_get_value(avail, "retry_interval");
if (val != NULL)
config->availability.retry_interval = json_value_get_number(val);
val = json_object_get_value(avail, "max_retries");
if (val != NULL)
config->availability.max_retries = json_value_get_number(val);
}
/* Frontend configuration */
frontend = json_object_get_object(obj, "frontend");
err = bud_config_load_frontend(frontend, &config->frontend);
if (!bud_is_ok(err))
goto failed_alloc_contexts;
/* Load frontend's context */
err = bud_context_load(frontend, &config->contexts[0]);
if (!bud_is_ok(err))
goto failed_alloc_contexts;
/* Backend configuration */
config->balance = json_object_get_string(obj, "balance");
err = bud_config_load_backend_list(config,
obj,
&config->contexts[0].backend);
if (!bud_is_ok(err))
goto failed_alloc_contexts;
/* User and group configuration */
config->user = json_object_get_string(obj, "user");
config->group = json_object_get_string(obj, "group");
/* SNI configuration */
bud_config_read_pool_conf(obj, "sni", &config->sni);
/* OCSP Stapling configuration */
bud_config_read_pool_conf(obj, "stapling", &config->stapling);
/* SSL Contexts */
/* TODO(indutny): sort them and do binary search */
for (i = 0; i < config->context_count; i++) {
bud_context_t* ctx;
/* NOTE: contexts[0] - is a default context */
ctx = &config->contexts[i + 1];
obj = json_array_get_object(contexts, i);
if (obj == NULL) {
err = bud_error(kBudErrJSONNonObjectCtx);
goto failed_load_context;
}
err = bud_context_load(obj, ctx);
if (!bud_is_ok(err))
goto failed_load_context;
err = bud_config_load_backend_list(config, obj, &ctx->backend);
if (!bud_is_ok(err))
goto failed_load_context;
}
bud_config_set_defaults(config);
return bud_config_init(config);
failed_load_context:
/* Deinitalize contexts */
for (i++; i >= 0; i--) {
bud_context_t* ctx;
ctx = &config->contexts[i];
free(ctx->backend.list);
ctx->backend.list = NULL;
}
failed_alloc_contexts:
free(config->contexts);
config->contexts = NULL;
free(config->trace.dso);
config->trace.dso = NULL;
failed_alloc_path:
json_value_free(json);
config->json = NULL;
end:
return err;
}
