MongoDB实现Multi tenant的方法

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this is an example on how to implement the multi tenancy by using MongoDB. Tenant separation is done by schema separation.

Tenant resolver to get the tenant for current request

@Component
 public class TenantResolver {
     public static final String HEADER_HYBRIS_TENANT = "hybris-tenant";
 
     private String defaultTenant;
 
     public String getCurrentTenant() {
         return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest().getHeader(HEADER_HYBRIS_TENANT);
 
     }
 
 }

1. Document annotation to specify the collection name

@Document(collection = "#{tenantResolver.getCurrentTenant()}_config")
public class Config {
...
}

Test:

Created different collections according to the tenant:

db.getCollectionNames()

[ “config”, “t1_config”, “t2_config”, “t3_config”, “users” ]

Data from different tenant is stored into the corresponding collection:

db.t1_config.find()

{ “_id” : “test1”, “_class” : “com.example.model.Config”, “value” : “value” }

db.t2_config.find()

{ “_id” : “test2”, “_class” : “com.example.model.Config”, “value” : “value” }

db.t3_config.find()

{ “_id” : “test3”, “_class” : “com.example.model.Config”, “value” : “value” }