Diff: M2XStreamClient/M2XStreamClient_template.h

Revision:

3:78f223d34f36

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/M2XStreamClient/M2XStreamClient_template.h	Tue Mar 05 02:34:44 2019 +0000
@@ -0,0 +1,135 @@
+#ifndef M2XStreamClient_template_h
+#define M2XStreamClient_template_h
+
+// Implementations of template functions
+
+int print_encoded_string(Print* print, const char* str);
+
+template <class T>
+int M2XStreamClient::updateStreamValue(const char* deviceId, const char* streamName, T value) {
+  if (_client->connect(_host, _port)) {
+    DBGLN("%s", "Connected to M2X server!");
+    writePutHeader(deviceId, streamName,
+                   //  for {"value":" and "}
+                   _null_print.print(value) + 12);
+    _client->print("{\"value\":\"");
+    _client->print(value);
+    _client->print("\"}");
+  } else {
+    DBGLN("%s", "ERROR: Cannot connect to M2X server!");
+    return E_NOCONNECTION;
+  }
+
+  return readStatusCode(true);
+}
+
+template <class T>
+inline int write_multiple_values(Print* print, int streamNum,
+                                 const char* names[], const int counts[],
+                                 const char* ats[], T values[]) {
+  int bytes = 0, value_index = 0;
+  bytes += print->print("{\"values\":{");
+  for (int i = 0; i < streamNum; i++) {
+    bytes += print->print("\"");
+    bytes += print->print(names[i]);
+    bytes += print->print("\":[");
+    for (int j = 0; j < counts[i]; j++) {
+      bytes += print->print("{\"timestamp\": \"");
+      bytes += print->print(ats[value_index]);
+      bytes += print->print("\", \"value\": \"");
+      bytes += print->print(values[value_index]);
+      bytes += print->print("\"}");
+      if (j < counts[i] - 1) { bytes += print->print(","); }
+      value_index++;
+    }
+    bytes += print->print("]");
+    if (i < streamNum - 1) { bytes += print->print(","); }
+  }
+  bytes += print->print("}}");
+  return bytes;
+}
+
+template <class T>
+int M2XStreamClient::postDeviceUpdates(const char* deviceId, int streamNum,
+                                       const char* names[], const int counts[],
+                                       const char* ats[], T values[]) {
+  if (_client->connect(_host, _port)) {
+    DBGLN("%s", "Connected to M2X server!");
+    int length = write_multiple_values(&_null_print, streamNum, names,
+                                       counts, ats, values);
+    _client->print("POST ");
+    if (_path_prefix)
+      _client->print(_path_prefix);
+    _client->print("/v2/devices/");
+    print_encoded_string(_client, deviceId);
+    _client->println("/updates HTTP/1.0");
+    writeHttpHeader(length);
+    write_multiple_values(_client, streamNum, names, counts, ats, values);
+  } else {
+    DBGLN("%s", "ERROR: Cannot connect to M2X server!");
+    return E_NOCONNECTION;
+  }
+  return readStatusCode(true);
+}
+
+template <class T>
+static int write_location_data(Print* print, const char* name,
+                               T latitude, T longitude,
+                               T elevation) {
+  int bytes = 0;
+  bytes += print->print("{\"name\":\"");
+  bytes += print->print(name);
+  bytes += print->print("\",\"latitude\":\"");
+  bytes += print->print(latitude);
+  bytes += print->print("\",\"longitude\":\"");
+  bytes += print->print(longitude);
+  bytes += print->print("\",\"elevation\":\"");
+  bytes += print->print(elevation);
+  bytes += print->print("\"}");
+  return bytes;
+}
+
+static int write_location_data(Print* print, const char* name,
+                               double latitude, double longitude,
+                               double elevation) {
+  int bytes = 0;
+  bytes += print->print("{\"name\":\"");
+  bytes += print->print(name);
+  bytes += print->print("\",\"latitude\":\"");
+  bytes += print->print(latitude, MAX_DOUBLE_DIGITS);
+  bytes += print->print("\",\"longitude\":\"");
+  bytes += print->print(longitude, MAX_DOUBLE_DIGITS);
+  bytes += print->print("\",\"elevation\":\"");
+  bytes += print->print(elevation);
+  bytes += print->print("\"}");
+  return bytes;
+}
+
+template <class T>
+int M2XStreamClient::updateLocation(const char* deviceId,
+                                    const char* name,
+                                    T latitude,
+                                    T longitude,
+                                    T elevation) {
+  if (_client->connect(_host, _port)) {
+    DBGLN("%s", "Connected to M2X server!");
+
+    int length = write_location_data(&_null_print, name, latitude, longitude,
+                                     elevation);
+    _client->print("PUT ");
+    if (_path_prefix)
+      _client->print(_path_prefix);
+    _client->print("/v2/devices/");
+    print_encoded_string(_client, deviceId);
+    _client->println("/location HTTP/1.0");
+
+    writeHttpHeader(length);
+    write_location_data(_client, name, latitude, longitude, elevation);
+  } else {
+    DBGLN("%s", "ERROR: Cannot connect to M2X server!");
+    return E_NOCONNECTION;
+  }
+  return readStatusCode(true);
+}
+
+#endif