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// Package mongodb provides Mongo DB dataplane clients for Microsoft Azure CosmosDb Services.
package mongodb
// Copyright 2017 Microsoft Corporation
//
// 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.
import (
"context"
"crypto/tls"
"fmt"
"net"
"strings"
"github.com/Azure/azure-sdk-for-go/services/cosmos-db/mgmt/2015-04-08/documentdb"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/adal"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/globalsign/mgo"
)
const (
cosmosDbConnectionPort = 10255
)
// NewMongoDBClientWithConnectionString returns a MongoDb session to communicate with CosmosDB using a connection string.
func NewMongoDBClientWithConnectionString(connectionString string) (*mgo.Session, error) {
// strip out the "ssl=true" option as MongoDb driver does not support by default SSL.
connectionString = strings.Replace(connectionString, "ssl=true", "", -1)
dialInfo, err := mgo.ParseURL(connectionString)
if err != nil {
return nil, err
}
return NewMongoDBClient(dialInfo)
}
// NewMongoDBClientWithCredentials returns a MongoDb session to communicate with CosmosDB using a username and a password.
func NewMongoDBClientWithCredentials(username, password, host string) (*mgo.Session, error) {
dialInfo := &mgo.DialInfo{
Addrs: []string{fmt.Sprintf("%s:%d", host, cosmosDbConnectionPort)},
Username: username,
Password: password,
}
return NewMongoDBClient(dialInfo)
}
// NewMongoDBClientWithSPToken returns a session to communicate with CosmosDB using an auth token.
func NewMongoDBClientWithSPToken(spToken *adal.ServicePrincipalToken, subscriptionID, resourceGroup, account string, environment azure.Environment) (*mgo.Session, error) {
authorizer := autorest.NewBearerAuthorizer(spToken)
cosmosDbClient := documentdb.NewDatabaseAccountsClientWithBaseURI(environment.ResourceManagerEndpoint, subscriptionID)
cosmosDbClient.Authorizer = authorizer
cosmosDbClient.AddToUserAgent("dataplane mongodb")
result, err := cosmosDbClient.ListConnectionStrings(context.Background(), resourceGroup, account)
if err != nil {
return nil, err
}
connectionStrings := *result.ConnectionStrings
for _, connectionString := range connectionStrings {
session, err := NewMongoDBClientWithConnectionString(*connectionString.ConnectionString)
if session != nil && err == nil {
return session, nil
}
}
return nil, err
}
// NewMongoDBClientWithMSI returns a MongoDB session to communicate with CosmosDB using MSI.
func NewMongoDBClientWithMSI(subscriptionID, resourceGroup, account string, environment azure.Environment) (*mgo.Session, error) {
msiEndpoint, err := adal.GetMSIVMEndpoint()
spToken, err := adal.NewServicePrincipalTokenFromMSI(msiEndpoint, environment.ResourceManagerEndpoint)
if err != nil {
return nil, err
}
return NewMongoDBClientWithSPToken(spToken, subscriptionID, resourceGroup, account, environment)
}
// NewMongoDBClient returns a MongoDB session to communicate with CosmosDB.
func NewMongoDBClient(dialInfo *mgo.DialInfo) (*mgo.Session, error) {
dialInfo.DialServer = func(addr *mgo.ServerAddr) (net.Conn, error) {
return tls.Dial("tcp", addr.String(), &tls.Config{})
}
session, err := mgo.DialWithInfo(dialInfo)
if err != nil {
return nil, err
}
return session, nil
}
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