Adding GPS plugin to make the subscription

Change-Id: I838ec22ee246c7ad1b438a2777b1fd8af02433b7
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 54 insertions, 0 deletions

diff --git a/plugins/gps.c b/plugins/gps.c
new file mode 100644
index 0000000..39b1f49
--- /dev/null
+++ b/plugins/gps.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author Romain Forlot <romain.forlot@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#define AFB_BINDING_VERSION 2
+#include <afb/afb-binding.h>
+#include <systemd/sd-event.h>
+#include <json-c/json_object.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "ctl-plugin.h"
+#include "wrap-json.h"
+
+CTLP_REGISTER("gps");
+
+// Call at initialisation time
+CTLP_ONLOAD(plugin, api) {
+	AFB_NOTICE ("GPS plugin: label='%s' version='%s' info='%s'", plugin->label, plugin->version, plugin->info);
+	return api;
+}
+
+CTLP_CAPI (subscribeToLow, source, argsJ, eventJ, context) {
+	json_object* subscribeArgsJ = NULL, *responseJ = NULL;
+
+	int err = 0;
+	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
+
+	AFB_DEBUG("Calling subscribe with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
+	err = afb_service_call_sync("gps", "subscribe", subscribeArgsJ, &responseJ);
+	if(err)
+	{
+		AFB_ERROR("Can't find api 'gpsd'");
+		return err;
+	}
+
+	return err;
+}