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By initializing the signer lazily, only when used the first time, the check for missing
secret_key
andprincipal_id
is also postponed until an actual API call to Azure is made.This makes it possible to load the Rails environment without setting the Azure Storage credentials in environments that do not need to connect to Azure. For example, a build step that precompiles assets needs to load the environments, but usually does not need Azure Storage. Before this change, one would still have to set some (possibly fake)
secret_key
orprincipal_id
in such build step, while with this change those can be omitted in any environment in which no real calls to the Azure API will be made.