mirror of
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109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package main
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import (
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"bytes"
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"io/ioutil"
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"log"
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"github.com/Shopify/sarama"
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"github.com/buger/goreplay/proto"
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)
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// KafkaConfig should contains required information to
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// build producers.
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type InputKafkaConfig struct {
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producer sarama.AsyncProducer
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consumer sarama.Consumer
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Host string `json:"input-kafka-host"`
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Topic string `json:"input-kafka-topic"`
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UseJSON bool `json:"input-kafka-json-format"`
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}
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type OutputKafkaConfig struct {
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producer sarama.AsyncProducer
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consumer sarama.Consumer
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Host string `json:"output-kafka-host"`
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Topic string `json:"output-kafka-topic"`
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UseJSON bool `json:"output-kafka-json-format"`
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}
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// KafkaTLSConfig should contains TLS certificates for connecting to secured Kafka clusters
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type KafkaTLSConfig struct {
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CACert string `json:"kafka-tls-ca-cert"`
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clientCert string `json:"kafka-tls-client-cert"`
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clientKey string `json:"kafka-tls-client-key"`
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}
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// KafkaMessage should contains catched request information that should be
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// passed as Json to Apache Kafka.
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type KafkaMessage struct {
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ReqURL string `json:"Req_URL"`
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ReqType string `json:"Req_Type"`
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ReqID string `json:"Req_ID"`
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ReqTs string `json:"Req_Ts"`
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ReqMethod string `json:"Req_Method"`
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ReqBody string `json:"Req_Body,omitempty"`
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ReqHeaders map[string]string `json:"Req_Headers,omitempty"`
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}
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// NewTLSConfig loads TLS certificates
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func NewTLSConfig(clientCertFile, clientKeyFile, caCertFile string) (*tls.Config, error) {
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tlsConfig := tls.Config{}
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// Load client cert
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cert, err := tls.LoadX509KeyPair(clientCertFile, clientKeyFile)
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if err != nil {
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return &tlsConfig, err
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}
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tlsConfig.Certificates = []tls.Certificate{cert}
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// Load CA cert
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caCert, err := ioutil.ReadFile(caCertFile)
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if err != nil {
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return &tlsConfig, err
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}
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caCertPool := x509.NewCertPool()
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caCertPool.AppendCertsFromPEM(caCert)
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tlsConfig.RootCAs = caCertPool
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return &tlsConfig, err
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}
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// NewKafkaConfig returns Kafka config with or without TLS
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func NewKafkaConfig(tlsConfig *KafkaTLSConfig) *sarama.Config {
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config := sarama.NewConfig()
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// Configuration options go here
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if (tlsConfig != nil) && (tlsConfig.CACert != "") && (tlsConfig.clientCert != "") && (tlsConfig.clientKey != "") {
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config.Net.TLS.Enable = true
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tlsConfig, err := NewTLSConfig(tlsConfig.clientCert, tlsConfig.clientKey, tlsConfig.CACert)
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if err != nil {
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log.Fatal(err)
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}
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config.Net.TLS.Config = tlsConfig
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}
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return config
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}
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// Dump returns the given request in its HTTP/1.x wire
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// representation.
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func (m KafkaMessage) Dump() ([]byte, error) {
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var b bytes.Buffer
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b.WriteString(fmt.Sprintf("%s %s %s\n", m.ReqType, m.ReqID, m.ReqTs))
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b.WriteString(fmt.Sprintf("%s %s HTTP/1.1", m.ReqMethod, m.ReqURL))
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b.Write(proto.CRLF)
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for key, value := range m.ReqHeaders {
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b.WriteString(fmt.Sprintf("%s: %s", key, value))
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b.Write(proto.CRLF)
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}
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b.Write(proto.CRLF)
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b.WriteString(m.ReqBody)
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return b.Bytes(), nil
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}
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