Create Clickhouse config

pkg/clickhouse/config/config.go

@@ -0,0 +1,41 @@
+// Copyright (c) 2025 The Jaeger Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package clickhouse
+
+// Configuration is clickhouse's internal configuration data
+type Configuration struct {
+	Connection Connection `mapstructure:"connection"`
+}
+
+type Connection struct {
+	// Servers contains a list of hosts that are used to connect to the cluster.
+	Servers []string `mapstructure:"servers" valid:"required,url"`
+	// Database is the database name for Jaeger service on the server
+	Database string `mapstructure:"database_name"`
+	// The port used when dialing to a cluster.
+	Port int `mapstructure:"port"`
+	// Authenticator contains the details of the authentication mechanism that is used for
+	// connecting to a cluster.
+	Authenticator Authenticator `mapstructure:"auth"`
+}
+
+// Authenticator holds the authentication properties needed to connect to a Clickhouse cluster.
+type Authenticator struct {
+	Basic BasicAuthenticator `mapstructure:"basic"`
+}
+
+// BasicAuthenticator holds the username and password for a password authenticator for a Clickhouse cluster.
+type BasicAuthenticator struct {
+	Username string `mapstructure:"username"`
+	Password string `mapstructure:"password"`
+}
+
+func DefaultConfiguration() *Configuration {
+	return &Configuration{
+		Connection: Connection{
+			Servers:      []string{"127.0.0.1"},
+			Port:         9000,
+		},
+	}
+}

pkg/clickhouse/config/config_test.go

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+// Copyright (c) 2025 The Jaeger Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package clickhouse