This continues the previous commit and establishes the interpreter context so that we can use the new host interface. In summary: * Instead of using the NullSource for destructions -- which doesn't hook up an interpreter and so any reads of configuration variables will fail -- we will enlighten the EvalSource to know how to orchestrate destruction interpretation. The primary difference is that we don't actually run the code, but *we do* perform all of the necessary configuration and variable init. * Associate the active interpreter with the plugin context as we are executing, so that the host object can actually read the state from the heap as requested to do so by attached plugins. * Rename anything "engine" related to use the term "host"; this avoids introducing unnecesarily new terminology. * Add a new pkg/resource/provider/ package where we can begin consolidating helper functionality for resource providers. Right now, this includes a wrapper interface atop the gRPC machinery necessary to contact the host, in addition to a Main function that hides some boilerplate entrypoint code. * Add a rpcutil.IsBenignCloseErr routine to let us ignore "benign" gRPC errors that are knowingly returned at shutdown. This commit completes pulumi/lumi#117. |
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serve.go |