README.md

Open Service Broker API for .NET - Client

Client library for calling the Open Service Broker API specification using idiomatic C# interfaces and type-safe DTOs.

dotnet add package OpenServiceBroker.Client

Usage

var client = new OpenServiceBrokerClient(new Uri("http://example.com/"));

All operations that result in a HTTP request are async. Non-successful HTTP status codes are mapped to domain-specific exception types (BrokerException and derived). Refer to the library's XML documentation for details on which exceptions to expect on which invocations.

The Open Service Broker API specification allows for both synchronous/blocking and asynchronous/incomplete/deferred operations. To avoid confusion with the C# language concept of async this library uses the terms "blocking" and "deferred" to describe these API features.

Instances of OpenServiceBrokerClient have three properties that expose the same functionality in different ways:

• .ServiceInstancesBlocking allows you to request blocking responses from the server. However, you may encounter AsyncRequiredException if the server does not support blocking operations.
• .ServiceInstancesDeferred allows you to request deferred responses from the server. However, you have to manually handle waiting/polling for the completion of operations.
• .ServiceInstancesPolling combines the advantages of both. It requests deferred responses from the server and transparently handles the waiting/polling for you. It is the recommended option for most use-cases.

Samples

Read the catalog:

var result = await client.Catalog.ReadAsync();

Provision a service instance:

var result = await client.ServiceInstancesPolling["123"].ProvisionAsync(new ServiceInstanceProvisionRequest
{
    ServiceId = "abc",
    PlanId = "xyz",
    Context = new JObject
    {
        {"platform", "myplatform"}
    },
    Parameters = new JObject
    {
        {"some_option", "some value"}
    }
});

Fetch a service instance:

var result = await client.ServiceInstancesPolling["123"].FetchAsync();

Update a service instance:

var result = await client.ServiceInstancesPolling["123"].UpdateAsync(new ServiceInstanceUpdateRequest
{
    ServiceId = "abc",
    PlanId = "xyz",
    Context = new JObject
    {
        {"platform", "myplatform"}
    },
    Parameters = new JObject
    {
        {"some_option", "some value"}
    }
});

Deprovision a service instance:

await client.ServiceInstancesPolling["123"].DeprovisionAsync(serviceId: "abc", planId: "xyz");

Create a service binding:

var result = await client.ServiceInstancesPolling["123"].ServiceBindings["456"].BindAsync(new ServiceBindingRequest
{
    ServiceId = "abc",
    PlanId = "xyz",
    BindResource = new ServiceBindingResourceObject
    {
        AppGuid = "e490c9df-6627-4699-8db8-55edc2a88e58"
    },
    Context = new JObject
    {
        {"platform", "myplatform"}
    },
    Parameters = new JObject
    {
        {"some_option", "some value"}
    }
});

Rotate a service binding (requires binding_rotatable in the plan):

var result = await client.ServiceInstancesPolling["123"].ServiceBindings["789"].BindAsync(new ServiceBindingRequest
{
    ServiceId = "abc",
    PlanId = "xyz",
    PredecessorBindingId = "456"
});

Fetch a service binding:

var result = await client.ServiceInstancesPolling["123"].ServiceBindings["456"].FetchAsync();

Delete a service binding:

await client.ServiceInstancesPolling["123"].ServiceBindings["456"].UnbindAsync(serviceId: "abc", planId: "xyz");

Versioning

The client library specifies the API version it expects by setting the X-Broker-API-Version header for all requests (as defined in the specification).

Currently the client library supports the 2.17 feature set but defaults to setting the version header to 2.13 for greater compatibility with older brokers. If the broker you are calling expects a different version and you are sure your request is compliant with that version of the specification you can override this:

client.SetApiVersion(new ApiVersion(2, 17));

Related packages

• OpenServiceBroker.Model provides the DTOs and exceptions used by this library.
• OpenServiceBroker.Server implements the same API using ASP.NET Core.

Links

• API documentation