Support retry policies, e.g. exponential backoff

[nakamorichi]

Expected behavior

Should be possible to set retry policy, such as exponential backoff, in similar way to google-http-java-client

See https://github.com/googleapis/google-http-java-client for reference implementation.

Actual behavior

No obvious way to set retry policy.

[deepak2016]

@Kitanotori Thanks for reporting the issue. This helps us to prioritize the features to work on next.
We have this in our backlog and we will be taking up this item soon.

[J0s3f]

This looks like a duplicate of #91

[darrelmiller]

@Kitanotori We are gathering requirements for retry behavior in a design document here https://github.com/microsoftgraph/msgraph-sdk-design/blob/master/middleware/RetryHandler.md We welcome your input as to whether what we have outlined will meet your requirements.

[nakamorichi]

@darrelmiller submitted proposal regarding exponential backoff microsoftgraph/msgraph-sdk-design#3

[NakulSabharwal]

Hi @Kitanotori ,we have integrated out msgraph-sdk-core with this sdk and now supporting retry with exponential backoff. Thanks.

[nakamorichi]

@NakulSabharwal How do I set GraphServiceClient to use exponential backoff?

[heyalistair]

@Kitanotori I'm not an export in the implementation of this SDK, but it looks like from src/main/java/com/microsoft/graph/http/BaseRequest.java that it retries with exponential backoff by default.