Add support influxdb basic auth

fixes #7644

doc/09-object-types.md

@@ -1607,6 +1607,13 @@ object InfluxdbWriter "influxdb" {
   host = "127.0.0.1"
   port = 8086
   database = "icinga2"
+  username = "icinga2"
+  password = "icinga2"
+
+  basic_auth = {
+     username = "icinga"
+     password = "icinga"
+  }
 
   flush_threshold = 1024
   flush_interval = 10s
@@ -1636,6 +1643,7 @@ Configuration Attributes:
   database                  | String                | **Required.** InfluxDB database name. Defaults to `icinga2`.
   username                  | String                | **Optional.** InfluxDB user name. Defaults to `none`.
   password                  | String                | **Optional.** InfluxDB user password.  Defaults to `none`.
+  basic\_auth               | Dictionary            | **Optional.** Username and password for HTTP basic authentication.
   ssl\_enable               | Boolean               | **Optional.** Whether to use a TLS stream. Defaults to `false`.
   ssl\_ca\_cert             | String                | **Optional.** Path to CA certificate to validate the remote host.
   ssl\_cert                 | String                | **Optional.** Path to host certificate to present to the remote host for mutual verification.

lib/perfdata/influxdbwriter.cpp

@@ -19,6 +19,7 @@
 #include "base/perfdatavalue.hpp"
 #include "base/stream.hpp"
 #include "base/json.hpp"
+#include "base/base64.hpp"
 #include "base/networkstream.hpp"
 #include "base/exception.hpp"
 #include "base/statsfunction.hpp"
@@ -504,6 +505,17 @@ void InfluxdbWriter::Flush()
 	request.set(http::field::user_agent, "Icinga/" + Application::GetAppVersion());
 	request.set(http::field::host, url->GetHost() + ":" + url->GetPort());
 
+	{
+		Dictionary::Ptr basicAuth = GetBasicAuth();
+
+		if (basicAuth) {
+			request.set(
+				http::field::authorization,
+				"Basic " + Base64::Encode(basicAuth->Get("username") + ":" + basicAuth->Get("password"))
+			);
+		}
+	}
+
 	request.body() = body;
 	request.set(http::field::content_length, request.body().size());
 

lib/perfdata/influxdbwriter.ti

@@ -38,6 +38,7 @@ class InfluxdbWriter : ConfigObject
 	[config] String ssl_key{
 		default {{{ return ""; }}}
 	};
+	[config, no_user_view] Dictionary::Ptr basic_auth;
 	[config, required] Dictionary::Ptr host_template {
 		default {{{
 			return new Dictionary({
@@ -91,6 +92,12 @@ validator InfluxdbWriter {
 			String "*";
 		};
 	};
+	Dictionary basic_auth {
+		required username;
+		String username;
+		required password;
+		String password;
+	};
 };
 
 }