c5b7b6ef11
This change brings back component outputs to the overall system again. In doing so, it generally overhauls the way we do resource RPCs a bit: * Instead of RegisterResource and CompleteResource, we call these BeginRegisterResource and EndRegisterResource, which begins to model these as effectively "asynchronous" resource requests. This should also help with parallelism (https://github.com/pulumi/pulumi/issues/106). * Flip the CLI/engine a little on its head. Rather than it driving the planning and deployment process, we move more to a model where it simply observes it. This is done by implementing an event handler interface with three events: OnResourceStepPre, OnResourceStepPost, and OnResourceComplete. The first two are invoked immediately before and after any step operation, and the latter is invoked whenever a EndRegisterResource comes in. The reason for the asymmetry here is that the checkpointing logic in the deployment engine is largely untouched (intentionally, as this is a sensitive part of the system), and so the "begin"/"end" nature doesn't flow through faithfully. * Also make the engine more event-oriented in its terminology and the way it handles the incoming BeginRegisterResource and EndRegisterResource events from the language host. This is the first step down a long road of incrementally refactoring the engine to work this way, a necessary prerequisite for parallelism.
41 lines
1.6 KiB
TypeScript
41 lines
1.6 KiB
TypeScript
// Copyright 2016-2017, Pulumi Corporation. All rights reserved.
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import * as log from "../log";
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import { getProject, getStack } from "../metadata";
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import { ComponentResource, ComputedValues, Resource } from "../resource";
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import { getRootResource, setRootResource } from "./settings";
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/**
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* rootPulumiStackTypeName is the type name that should be used to construct the root component in the tree of Pulumi
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* resources allocated by a deployment. This must be kept up to date with
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* `github.com/pulumi/pulumi/pkg/resource/stack.RootPulumiStackTypeName`.
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*/
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export const rootPulumiStackTypeName = "pulumi:pulumi:Stack";
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/**
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* runInPulumiStack creates a new Pulumi stack resource and executes the callback inside of it. Any outputs
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* returned by the callback will be stored as output properties on this resulting Stack object.
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*/
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export function runInPulumiStack(init: () => any): void {
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const _ = new Stack(init);
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}
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class Stack extends ComponentResource {
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constructor(init: () => ComputedValues) {
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super(rootPulumiStackTypeName, `${getProject()}-${getStack()}`);
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if (getRootResource()) {
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throw new Error("Only one root Pulumi Stack may be active at once");
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}
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let outputs: ComputedValues | undefined;
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try {
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setRootResource(this); // install ourselves as the current root.
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outputs = init(); // run the init code.
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}
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finally {
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super.done(outputs); // save the outputs for this component to whatever the init returned.
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setRootResource(undefined); // restore the original root resource.
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}
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}
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}
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