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Signed-off-by: Aswin Suryanarayanan <aswinsuryan@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| /* | ||
| SPDX-License-Identifier: Apache-2.0 | ||
| Copyright Contributors to the Submariner project. | ||
| 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 ovn | ||
|
|
||
| import ( | ||
| "os" | ||
| "strings" | ||
|
|
||
| "context" | ||
| "crypto/tls" | ||
| "crypto/x509" | ||
| "github.com/cenkalti/backoff/v4" | ||
| libovsdbclient "github.com/ovn-org/libovsdb/client" | ||
| "github.com/ovn-org/libovsdb/model" | ||
| "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/nbdb" | ||
| "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/sbdb" | ||
| "github.com/pkg/errors" | ||
| "github.com/submariner-io/submariner/pkg/util/clusterfiles" | ||
| clientset "k8s.io/client-go/kubernetes" | ||
| ) | ||
|
|
||
| type ConnectionHandler struct { | ||
| k8sClientset clientset.Interface | ||
| nbdb libovsdbclient.Client | ||
| } | ||
|
|
||
| func NewConnectionHandler(k8sClientset clientset.Interface) *ConnectionHandler { | ||
| return &ConnectionHandler{ | ||
| k8sClientset: k8sClientset, | ||
| } | ||
| } | ||
|
|
||
| func (connectionHandler *ConnectionHandler) initClients() error { | ||
| var tlsConfig *tls.Config | ||
|
|
||
| if strings.HasPrefix(getOVNNBDBAddress(), "ssl:") { | ||
| certFile, err := clusterfiles.Get(connectionHandler.k8sClientset, getOVNCertPath()) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "error getting config for %q", getOVNCertPath()) | ||
| } | ||
|
|
||
| pkFile, err := clusterfiles.Get(connectionHandler.k8sClientset, getOVNPrivKeyPath()) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "error getting config for %q", getOVNPrivKeyPath()) | ||
| } | ||
|
|
||
| caFile, err := clusterfiles.Get(connectionHandler.k8sClientset, getOVNCaBundlePath()) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "error getting config for %q", getOVNCaBundlePath()) | ||
| } | ||
|
|
||
| tlsConfig, err = getOVNTLSConfig(pkFile, certFile, caFile) | ||
| if err != nil { | ||
| return errors.Wrap(err, "error getting OVN TLS config") | ||
| } | ||
| } | ||
|
|
||
| // Create nbdb client | ||
| nbdbModel, err := nbdb.FullDatabaseModel() | ||
| if err != nil { | ||
| return errors.Wrap(err, "error getting OVN NBDB database model") | ||
| } | ||
|
|
||
| connectionHandler.nbdb, err = createLibovsdbClient(getOVNNBDBAddress(), tlsConfig, nbdbModel) | ||
| if err != nil { | ||
| return errors.Wrap(err, "error creating NBDB connection") | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
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| func getOVNTLSConfig(pkFile, certFile, caFile string) (*tls.Config, error) { | ||
| cert, err := tls.LoadX509KeyPair(certFile, pkFile) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "Failure loading ovn certificates") | ||
| } | ||
|
|
||
| rootCAs := x509.NewCertPool() | ||
|
|
||
| data, err := os.ReadFile(caFile) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failure loading OVNDB ca bundle") | ||
| } | ||
|
|
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| rootCAs.AppendCertsFromPEM(data) | ||
|
|
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| return &tls.Config{ | ||
| Certificates: []tls.Certificate{cert}, | ||
| RootCAs: rootCAs, | ||
| ServerName: "ovn", | ||
| MinVersion: tls.VersionTLS12, | ||
| }, nil | ||
| } | ||
|
|
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| func createLibovsdbClient(dbAddress string, tlsConfig *tls.Config, dbModel model.ClientDBModel) (libovsdbclient.Client, error) { | ||
| options := []libovsdbclient.Option{ | ||
| // Reading and parsing the DB after reconnect at scale can (unsurprisingly) | ||
| // take longer than a normal ovsdb operation. Give it a bit more time so | ||
| // we don't time out and enter a reconnect loop. | ||
| libovsdbclient.WithReconnect(OVSDBTimeout, &backoff.ZeroBackOff{}), | ||
| libovsdbclient.WithLogger(&logger.Logger), | ||
| } | ||
|
|
||
| options = append(options, libovsdbclient.WithEndpoint(dbAddress)) | ||
| if tlsConfig != nil { | ||
| options = append(options, libovsdbclient.WithTLSConfig(tlsConfig)) | ||
| } | ||
|
|
||
| client, err := libovsdbclient.NewOVSDBClient(dbModel, options...) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "error creating ovsdbClient") | ||
| } | ||
|
|
||
| ctx, cancel := context.WithTimeout(context.Background(), OVSDBTimeout) | ||
| defer cancel() | ||
|
|
||
| err = client.Connect(ctx) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "error connecting to ovsdb") | ||
| } | ||
|
|
||
| if dbModel.Name() == "OVN_Northbound" { | ||
| _, err = client.MonitorAll(ctx) | ||
| if err != nil { | ||
| client.Close() | ||
| return nil, errors.Wrap(err, "error setting OVN NBDB client to monitor-all") | ||
| } | ||
| } else { | ||
| // Only Monitor Required SBDB tables to reduce memory overhead | ||
| _, err = client.Monitor(ctx, | ||
| client.NewMonitor( | ||
| libovsdbclient.WithTable(&sbdb.Chassis{}), | ||
| ), | ||
| ) | ||
| if err != nil { | ||
| client.Close() | ||
| return nil, errors.Wrap(err, "error monitoring chassis table in OVN SBDB") | ||
| } | ||
| } | ||
|
|
||
| logger.Info("Client is %v", client) | ||
|
|
||
| return client, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| SPDX-License-Identifier: Apache-2.0 | ||
| Copyright Contributors to the Submariner project. | ||
| 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 ovn | ||
|
|
||
| import ( | ||
| "os" | ||
| "time" | ||
| ) | ||
|
|
||
| // default OVSDB timeout used by ovn-k. | ||
| const ( | ||
| OVSDBTimeout = 20 * time.Second | ||
| ovnCert = "secret://openshift-ovn-kubernetes/ovn-cert/tls.crt" | ||
| ovnPrivKey = "secret://openshift-ovn-kubernetes/ovn-cert/tls.key" | ||
| ovnCABundle = "configmap://openshift-ovn-kubernetes/ovn-ca/ca-bundle.crt" | ||
| defaultOVNNBDB = "ssl:ovnkube-db.openshift-ovn-kubernetes.svc.cluster.local:9641" | ||
| ) | ||
|
|
||
| func getOVNNBDBAddress() string { | ||
| addr := os.Getenv("OVN_NBDB") | ||
| if addr == "" { | ||
| return defaultOVNNBDB | ||
| } | ||
|
|
||
| return addr | ||
| } | ||
|
|
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| func getOVNPrivKeyPath() string { | ||
| key := os.Getenv("OVN_PK") | ||
| if key == "" { | ||
| return ovnPrivKey | ||
| } | ||
|
|
||
| return key | ||
| } | ||
|
|
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| func getOVNCertPath() string { | ||
| cert := os.Getenv("OVN_CERT") | ||
| if cert == "" { | ||
| return ovnCert | ||
| } | ||
|
|
||
| return cert | ||
| } | ||
|
|
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| func getOVNCaBundlePath() string { | ||
| ca := os.Getenv("OVN_CA") | ||
| if ca == "" { | ||
| return ovnCABundle | ||
| } | ||
|
|
||
| return ca | ||
| } |
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