Amdatu BlobStores
Project Info
| What | Where |
|---|---|
| Main website | http://www.amdatu.org/components/blobstores.html |
| Source code | https://bitbucket.org/amdatu/amdatu-blobstores |
| Issue tracking | https://amdatu.atlassian.net/browse/AMDATUSTORAGE |
| Continuous build | https://amdatu.atlassian.net/builds/browse/AMDATUBLOBSTORES |
Introduction
BlobStores are used to store (large) files in the cloud. Amdatu BlobStores is based on the jclouds library that supports BlobStores from several cloud providers such as Amazon S3 and Microsoft Azure. Amdatu BlobStores re-packages jclouds and all of it's dependencies to provide a single comprehensive component that is available as an OSGi service which is configurable using a Managed Service Factory. This way ConfigurationAdmin can be used to configure BlobStores while using the jclouds API to use the BlobStores from code.
Usage
Deploy the BlobStore bundle; `org.amdatu.blobstores` with your application and inject the BlobStoreService into components as desired. After providing a configuration, the BlobStoreService then allows you to interact with the configured BlobStore.
Dependencies
The Amdatu MongoDB bundle depends on the following bundles:
- Apache Felix DependencyManager v3.1.0;
- An OSGi ConfigurationAdmin service implementation, for example Apache Felix ConfigAdmin v1.8.0;
- (Optionally) an OSGi LogService implementation, for example Apache Felix LogService v1.0.1.
Configuration
The `BlobStoreService` must be configured before it can be used. Once the `BlobStoreService` is configured, you can use it to interact with the configured BlobStore through the jclouds BlobStore API. The BlobStoreService is configured by providing a factory configuration using the PID `org.amdatu.storage.servicefactory`.
Note that this configuration is mandatory in order to make use of the BlobStore service!
Configuration is done by setting the required `ID_KEY`, `PROVIDER_KEY` and optional `IDENTITY_KEY`, `SECRET_KEY` and `BASEDIR_KEY` properties.
Example
The following example shows how to retrieve a BlobStoreContext and BlobStore, create a container and store a Blob inside the container using the configured BlobStore:
BlobStoreContext bsContext = m_blobStoreService.getContext();
BlobStore blobStore = bsContext.getBlobStore();
blobStore.createContainerInLocation(null, containerName);
blobStore.putBlob(containerName,
blobStore.blobBuilder(blobName).payload(ByteSource.wrap("somecontent".getBytes())).build());
License
The Amdatu MongoDB project is licensed under Apache License 2.0.