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Multi Tenancy with Mongodb and Gorm

user43947 Published in September 21, 2018, 2:50 am

I am trying to save objects in mongodb using multi tenancy at DATABASE level. However, objects always gets saved in the default database.

my application.yml

            tenantResolverClass: org.grails.datastore.mapping.multitenancy.resolvers.SystemPropertyTenantResolver
            url: mongodb://localhost/test
                url: mongodb://localhost/test1db
                url: mongodb://localhost/test2db
                maxWaitTime: 10000

I can see that all the connections(default, 1 and 2) are loaded fine into connectionSourceMap in InMemoryConnectionSources.groovy class.

Interceptor function is invoked before controller function and interceptor sets the following property:

System.setProperty(SystemPropertyTenantResolver.PROPERTY_NAME, "1")

I was expecting that since Tenant id has been set to "1" and object against key "1" exists in connectionSourceMap, so now objects will be saved in test1db. However this is not the case when I try to save object

Tenants.withCurrent {
                   domainObj.save(flush: flush, validate: false)

I tried to debug the application.


    public <T1> T1 withNewSession(Serializable tenantId, Closure<T1> callable) {
        MongoDatastore mongoDatastore = getDatastoreForTenantId(tenantId);
        Session session = mongoDatastore.connect();
        try {
            return callable.call(session);
        finally {

mongoDataStore object appears to contain the right information with default database string set to test1db. However, the session object is again referring to test db as default db. I could not understand why this is happening and how could I resolve this.

I have a feeling that issue might be related to the following point in the documentation[1]:

11.2.3. Multi Tenancy and the Session Factory
Note that if you reference the default SessionFactory or PlatformTransactionManager in your classes that are injected via Spring, these will not be tenant aware and will point directly to default data source.

But could not figure out on how to resolve the issue.

Thanks for your help and time. Any help is appreciated.

1: http://gorm.grails.org/latest/hibernate/manual/index.html#multiTenancy

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  • Could you provide an example that reproduces the issue on github? – Graeme Rocher Oct 27 '16 at 11:06

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