/
typha.go
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/
typha.go
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// Copyright (c) 2017-2018 Tigera, Inc. All rights reserved.
//
// 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.
package infrastructure
import (
"crypto/x509"
"io/ioutil"
"os"
"path/filepath"
log "github.com/sirupsen/logrus"
"github.com/projectcalico/felix/fv/containers"
"github.com/projectcalico/felix/fv/utils"
"github.com/projectcalico/typha/pkg/tlsutils"
)
type Typha struct {
*containers.Container
}
func (f *Typha) GetTyphaPID() int {
return f.GetSinglePID("calico-typha")
}
func (f *Typha) GetTyphaPIDs() []int {
return f.GetPIDs("calico-typha")
}
func RunTypha(infra DatastoreInfra, options TopologyOptions) *Typha {
log.Info("Starting typha")
args := infra.GetDockerArgs()
args = append(args,
"--privileged",
"-e", "TYPHA_LOGSEVERITYSCREEN="+options.TyphaLogSeverity,
"-e", "TYPHA_PROMETHEUSMETRICSENABLED=true",
)
if options.WithFelixTyphaTLS {
EnsureTLSCredentials()
args = append(args,
"-e", "TYPHA_CAFILE="+filepath.Join(certDir, "ca.crt"),
"-e", "TYPHA_SERVERKEYFILE="+filepath.Join(certDir, "server.key"),
"-e", "TYPHA_SERVERCERTFILE="+filepath.Join(certDir, "server.crt"),
"-e", "TYPHA_CLIENTCN=typha-client",
"-v", certDir+":"+certDir,
)
options.ExtraEnvVars["FELIX_TYPHACAFILE"] = filepath.Join(certDir, "ca.crt")
options.ExtraEnvVars["FELIX_TYPHAKEYFILE"] = filepath.Join(certDir, "client.key")
options.ExtraEnvVars["FELIX_TYPHACERTFILE"] = filepath.Join(certDir, "client.crt")
options.ExtraEnvVars["FELIX_TYPHACN"] = "typha-server"
options.ExtraVolumes[certDir] = certDir
}
args = append(args,
utils.Config.TyphaImage,
)
c := containers.Run("typha",
containers.RunOpts{AutoRemove: true},
args...,
)
return &Typha{
Container: c,
}
}
var certDir = ""
func EnsureTLSCredentials() {
if certDir != "" {
// Already in place.
return
}
// Generate credentials needed for Felix-Typha TLS.
var err error
certDir, err = ioutil.TempDir("", "felixfv")
tlsutils.PanicIfErr(err)
// Trusted CA.
caCert, caKey := tlsutils.MakeCACert("trustedCA")
tlsutils.WriteCert(caCert.Raw, filepath.Join(certDir, "ca.crt"))
// Typha server.
serverCert, serverKey := tlsutils.MakePeerCert("typha-server", "", x509.ExtKeyUsageServerAuth, caCert, caKey)
tlsutils.WriteKey(serverKey, filepath.Join(certDir, "server.key"))
tlsutils.WriteCert(serverCert, filepath.Join(certDir, "server.crt"))
// Typha client with good CN.
clientCert, clientKey := tlsutils.MakePeerCert("typha-client", "", x509.ExtKeyUsageClientAuth, caCert, caKey)
tlsutils.WriteKey(clientKey, filepath.Join(certDir, "client.key"))
tlsutils.WriteCert(clientCert, filepath.Join(certDir, "client.crt"))
}
func RemoveTLSCredentials() {
if certDir != "" {
err := os.RemoveAll(certDir)
tlsutils.PanicIfErr(err)
}
}