feat(monitor): add api server

plugins/monitor/monitor.c

@@ -22,22 +22,90 @@
 #include <string.h>
 
 #include <nng/nng.h>
+#include <nng/supplemental/http/http.h>
 
 #include "monitor.h"
+#include "restful/handle.h"
 #include "utils/log.h"
 
 #define neu_plugin_module default_monitor_plugin_module
 
 struct neu_plugin {
     neu_plugin_common_t common;
+    nng_http_server *   api_server;
 };
 
+static nng_http_server *server_init()
+{
+    nng_url *        url       = NULL;
+    nng_http_server *server    = NULL;
+    const char *     host_port = "http://0.0.0.0:7001";
+
+    nlog_info("monitor bind url: %s", host_port);
+
+    int ret = nng_url_parse(&url, host_port);
+    if (0 != ret) {
+        return NULL;
+    }
+
+    ret = nng_http_server_hold(&server, url);
+    if (0 != ret) {
+        nlog_error("monitor server bind error: %d", ret);
+    }
+
+    nng_url_free(url);
+    return server;
+}
+
+static struct neu_rest_handler api_handlers[] = {};
+
+static int add_handlers(nng_http_server *server)
+{
+    struct neu_rest_handler cors = {
+        .method        = NEU_REST_METHOD_OPTIONS,
+        .type          = NEU_REST_HANDLER_FUNCTION,
+        .value.handler = neu_rest_handle_cors,
+    };
+
+    for (size_t i = 0; i < sizeof(api_handlers) / sizeof(api_handlers[0]);
+         ++i) {
+        if (0 != neu_rest_add_handler(server, &api_handlers[0])) {
+            return -1;
+        }
+
+        cors.url = api_handlers[i].url;
+        if (0 != neu_rest_add_handler(server, &cors)) {
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
 static neu_plugin_t *monitor_plugin_open(void)
 {
     neu_plugin_t *plugin = calloc(1, sizeof(neu_plugin_t));
+    if (NULL == plugin) {
+        return NULL;
+    }
 
     neu_plugin_common_init(&plugin->common);
 
+    plugin->api_server = server_init();
+    if (NULL == plugin->api_server) {
+        nlog_error("fail to create monitor server");
+        free(plugin);
+        return NULL;
+    }
+
+    if (0 != add_handlers(plugin->api_server) ||
+        0 != nng_http_server_start(plugin->api_server)) {
+        nlog_error("fail to start monitor server");
+        nng_http_server_release(plugin->api_server);
+        free(plugin);
+        return NULL;
+    }
+
     return plugin;
 }
 
@@ -45,6 +113,8 @@ static int monitor_plugin_close(neu_plugin_t *plugin)
 {
     int rv = 0;
 
+    nng_http_server_stop(plugin->api_server);
+    nng_http_server_release(plugin->api_server);
     free(plugin);
     nlog_info("Success to free plugin: %s", neu_plugin_module.module_name);