MongoDB Adapter

Installation

go get -u github.com/casbin/mongodb-adapter/v3

Simple Example

package mainimport ("github.com/casbin/casbin/v2""github.com/casbin/mongodb-adapter/v3")funcmain() {// Initialize a MongoDB adapter and use it in a Casbin enforcer:// The adapter will use the database named "casbin".// If it doesn't exist, the adapter will create it automatically.a,err:=mongodbadapter.NewAdapter("127.0.0.1:27017")// Your MongoDB URL.iferr!=nil {panic(err)}// Or you can use an existing DB "abc" like this:// The adapter will use the table named "casbin_rule".// If it doesn't exist, the adapter will create it automatically.// a := mongodbadapter.NewAdapter("127.0.0.1:27017/abc")e,err:=casbin.NewEnforcer("examples/rbac_model.conf",a)iferr!=nil {panic(err)}// Load the policy from DB.e.LoadPolicy()// Check the permission.e.Enforce("alice","data1","read")// Modify the policy.// e.AddPolicy(...)// e.RemovePolicy(...)// Save the policy back to DB.e.SavePolicy()}

Advanced Example

package mainimport ("github.com/casbin/casbin/v2""github.com/casbin/mongodb-adapter/v3"mongooptions"go.mongodb.org/mongo-driver/mongo/options")funcmain() {// Initialize a MongoDB adapter with NewAdapterWithClientOption:// The adapter will use custom mongo client options.// custom database name.// default collection name 'casbin_rule'.mongoClientOption:=mongooptions.Client().ApplyURI("mongodb://127.0.0.1:27017")databaseName:="casbin"a,err:=mongodbadapter.NewAdapterWithClientOption(mongoClientOption,databaseName)// Or you can use NewAdapterWithCollectionName for custom collection name.iferr!=nil {panic(err)}e,err:=casbin.NewEnforcer("examples/rbac_model.conf",a)iferr!=nil {panic(err)}// Load the policy from DB.e.LoadPolicy()// Check the permission.e.Enforce("alice","data1","read")// Modify the policy.// e.AddPolicy(...)// e.RemovePolicy(...)// Save the policy back to DB.e.SavePolicy()}

Filtered Policies

import"github.com/globalsign/mgo/bson"// This adapter also implements the FilteredAdapter interface. This allows for// efficent, scalable enforcement of very large policies:filter:=&bson.M{"v0":"alice"}e.LoadFilteredPolicy(filter)// The loaded policy is now a subset of the policy in storage, containing only// the policy lines that match the provided filter. This filter should be a// valid MongoDB selector using BSON. A filtered policy cannot be saved.

Getting Help

License