Added SSL support for influxdb

src/config.hpp

@@ -232,6 +232,7 @@ class Config {
     _saveNeeded = true;
   }
   bool isInfluxDb2Active() { return _influxDb2Url.length() ? true : false; }
+  bool isInfluxSSL() { return _influxDb2Url.startsWith("https://"); }
   const char* getInfluxDb2PushOrg() { return _influxDb2Org.c_str(); }
   void setInfluxDb2PushOrg(String s) {
     _influxDb2Org = s;

src/pushtarget.cpp

@@ -64,7 +64,7 @@ void PushTarget::sendAll(float angle, float gravitySG, float corrGravitySG,
 
   if (myConfig.isInfluxDb2Active()) {
     LOG_PERF_START("push-influxdb2");
-    sendInfluxDb2(engine);
+    sendInfluxDb2(engine, myConfig.isInfluxSSL());
     LOG_PERF_STOP("push-influxdb2");
   }
 
@@ -78,7 +78,7 @@ void PushTarget::sendAll(float angle, float gravitySG, float corrGravitySG,
 //
 // Send to influx db v2
 //
-void PushTarget::sendInfluxDb2(TemplatingEngine& engine) {
+void PushTarget::sendInfluxDb2(TemplatingEngine& engine, bool isSecure) {
 #if !defined(PUSH_DISABLE_LOGGING)
   Log.notice(F("PUSH: Sending values to influxdb2." CR));
 #endif
@@ -91,8 +91,31 @@ void PushTarget::sendInfluxDb2(TemplatingEngine& engine) {
       "&bucket=" + String(myConfig.getInfluxDb2PushBucket());
   String doc = engine.create(TemplatingEngine::TEMPLATE_INFLUX);
 
-  _http.begin(_wifi, serverPath);
-  _http.setTimeout(myHardwareConfig.getPushTimeout() * 1000);
+  if (isSecure) {
+    Log.notice(F("PUSH: InfluxDB, SSL enabled without validation." CR));
+    _wifiSecure.setInsecure();
+
+#if defined(ESP8266)
+    String host =
+        serverPath.substring(8);  // remove the prefix or the probe will fail,
+                                  // it needs a pure host name.
+    int idx = host.indexOf("/");
+    if (idx != -1) host = host.substring(0, idx);
+
+    if (_wifiSecure.probeMaxFragmentLength(host, 443, 512)) {
+      Log.notice(F("PUSH: InfluxDB server supports smaller SSL buffer." CR));
+      _wifiSecure.setBufferSizes(512, 512);
+    }
+#endif
+
+    _httpSecure.begin(_wifiSecure, serverPath);
+    _httpSecure.setTimeout(myHardwareConfig.getPushTimeout() * 1000);
+    _lastCode = _httpSecure.POST(doc);
+  } else  {
+    _http.begin(_wifi, serverPath);
+    _http.setTimeout(myHardwareConfig.getPushTimeout() * 1000);
+    _lastCode = _http.POST(doc);
+  }
 
 #if LOG_LEVEL == 6 && !defined(PUSH_DISABLE_LOGGING)
   Log.verbose(F("PUSH: url %s." CR), serverPath.c_str());
@@ -111,13 +134,18 @@ void PushTarget::sendInfluxDb2(TemplatingEngine& engine) {
     errLog.addEntry("PUSH: Influxdb push failed response=" + String(_lastCode));
   }
 
-  _http.end();
-  _wifi.stop();
+  if (isSecure) {
+    _httpSecure.end();
+    _wifiSecure.stop();
+  } else {
+    _http.end();
+    _wifi.stop();
+  }
   tcp_cleanup();
 }
 
 //
-//
+// Add HTTP header to request
 //
 void PushTarget::addHttpHeader(HTTPClient& http, String header) {
   if (!header.length()) return;

src/pushtarget.hpp

@@ -59,7 +59,7 @@ class PushTarget {
   void sendHttp3(TemplatingEngine& engine, bool isSecure) {
     sendHttpGet(engine, isSecure);
   }
-  void sendInfluxDb2(TemplatingEngine& engine);
+  void sendInfluxDb2(TemplatingEngine& engine, bool isSecure);
   void sendMqtt(TemplatingEngine& engine, bool isSecure);
   int getLastCode() { return _lastCode; }
   bool getLastSuccess() { return _lastSuccess; }

src/webserver.cpp

@@ -861,7 +861,7 @@ void WebServerHandler::webHandleTestPush() {
     enabled = true;
   } else if (!type.compareTo(PARAM_FORMAT_INFLUXDB) &&
              myConfig.isInfluxDb2Active()) {
-    push.sendInfluxDb2(engine);
+    push.sendInfluxDb2(engine, myConfig.isInfluxSSL());
     enabled = true;
   } else if (!type.compareTo(PARAM_FORMAT_MQTT) && myConfig.isMqttActive()) {
     push.sendMqtt(engine, myConfig.isMqttSSL());

src_docs/source/releases.rst

@@ -9,6 +9,8 @@ v1.0.0
 * Removed brewfather option (can use standard HTTP options), the old apporach can still be used via changing format template.
 * Added 5 more points for formula creation, so a total of 10 angles/gravity values can be stored.
 * Added function on format page so that it's easy to copy a format template from the docs (simplify service integration).
+* Added https support for Influxdb
+* Added additional http error codes to troubleshooting documentation
 * BUG: Fixed issue in formula calculation in case there were a gap in the data series
 
 v0.9.0

src_docs/source/troubleshooting.rst

@@ -31,7 +31,6 @@ Log errors
   Check the format for your custom header. This means it has not a correct format.
 
 * Influxdb push failed response
-* Brewfather push failed response
 * HTTP push failed response
 
   All these errors are standard http error codes. This are the commone ones;
@@ -41,6 +40,20 @@ Log errors
   *  403 - Forbidden. Could be an issue with token or URL. 
   *  404 - Not found. Probably a wrong URL.
   
+  In some cases there can be negative error codes which have the following meaning:
+
+  * -1 - Connection refused
+  * -2 - Send header failed
+  * -3 - Send payload failed
+  * -4 - Not connected
+  * -5 - Connection lost
+  * -6 - No stream
+  * -7 - No HTTP server
+  * -8 - Too little RAM available
+  * -9 - Error encoding
+  * -10 - Error writing to stream
+  * -11 - Read timeout
+
 * MQTT push on <topic> failed error
 
   * -3 - Network failed connected