[v9.3.x] Plugins: add option to proxy ds connections through a secure socks proxy (#59254) (#60643)

Plugins: add option to proxy ds connections through a secure socks proxy (#59254)

* Plugins: add feature to proxy data source connections

(cherry picked from commit 6805c951e9)

pkg/setting/setting.go

@@ -468,6 +468,8 @@ type Cfg struct {
 
 	Search SearchSettings
 
+	SecureSocksDSProxy SecureSocksDSProxySettings
+
 	// Access Control
 	RBACEnabled         bool
 	RBACPermissionCache bool
@@ -1070,6 +1072,13 @@ func (cfg *Cfg) Load(args CommandLineArgs) error {
 	cfg.Storage = readStorageSettings(iniFile)
 	cfg.Search = readSearchSettings(iniFile)
 
+	cfg.SecureSocksDSProxy, err = readSecureSocksDSProxySettings(iniFile)
+	if err != nil {
+		// if the proxy is misconfigured, disable it rather than crashing
+		cfg.SecureSocksDSProxy.Enabled = false
+		cfg.Logger.Error("secure_socks_datasource_proxy unable to start up", "err", err.Error())
+	}
+
 	if VerifyEmailEnabled && !cfg.Smtp.Enabled {
 		cfg.Logger.Warn("require_email_validation is enabled but smtp is disabled")
 	}