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// -
// ========================LICENSE_START=================================
// Copyright (C) 2024: Deutsche Telecom
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================LICENSE_END===================================
// Package cfg provides configuration settings for the policy-opa-pdp service.
// This package includes variables for various configuration settings such as log level,
// Kafka server details, and credentials.It also includes functions to initialize these
// settings and retrieve environment variables with default values.
package cfg
import (
log "github.com/sirupsen/logrus"
"os"
"strconv"
)
// LogLevel - The log level for the application.
// BootstrapServer - The Kafka bootstrap server address.
// Topic - The Kafka topic to subscribe to.
// GroupId - The Kafka consumer group ID.
// Username - The username for basic authentication.
// Password - The password for basic authentication.
// UseSASLForKAFKA - Flag to indicate if SASL should be used for Kafka.
// KAFKA_USERNAME - The Kafka username for SASL authentication.
// KAFKA_PASSWORD - The Kafka password for SASL authentication.
var (
LogLevel string
BootstrapServer string
Topic string
GroupId string
Username string
Password string
UseSASLForKAFKA string
KAFKA_USERNAME string
KAFKA_PASSWORD string
)
// Initializes the configuration settings.
func init() {
log.SetLevel(log.DebugLevel)
log.SetOutput(os.Stdout)
log.Debug("###################################### ")
log.Debug("OPA-PDP: Starting initialisation ")
log.Debug("###################################### ")
LogLevel = getEnv("LOG_LEVEL", "info")
BootstrapServer = getEnv("KAFKA_URL", "kafka:9092")
Topic = getEnv("PAP_TOPIC", "policy-pdp-pap")
GroupId = getEnv("GROUPID", "opa-pdp")
Username = getEnv("API_USER", "policyadmin")
Password = getEnv("API_PASSWORD", "zb!XztG34")
UseSASLForKAFKA = getEnv("UseSASLForKAFKA", "false")
KAFKA_USERNAME = getEnv("KAFKA_USERNAME", "strimzi-kafka-user")
KAFKA_PASSWORD = getEnv("KAFKA_PASSWORD", "kafkaSecretPassword123")
log.Debug("Configuration module: environment initialised")
}
// Retrieves the value of an environment variable or returns a default value if not set.
func getEnv(key string, defaultVal string) string {
if value, exists := os.LookupEnv(key); exists {
return value
}
log.Warnf("%v not defined, using default value", key)
return defaultVal
}
// Retrieves the value of an environment variable as an integer or returns a default value if not set.
func getEnvAsInt(name string, defaultVal int) int {
valueStr := getEnv(name, "")
if value, err := strconv.Atoi(valueStr); err == nil {
return value
} else if valueStr != "" {
log.Warnf("Invalid int value: %v for variable: %v. Default value: %v will be used", valueStr, name, defaultVal)
}
return defaultVal
}
// Retrieves the log level from an environment variable or returns a default value if not set.
func getLogLevel(key string, defaultVal string) log.Level {
logLevelStr := getEnv(key, defaultVal)
if loglevel, err := log.ParseLevel(logLevelStr); err == nil {
return loglevel
} else {
log.Warnf("Invalid log level: %v. Log level will be Info!", logLevelStr)
return log.DebugLevel
}
}
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