73f4f2c464
Replace the Source-based implementation of refresh with a phase that runs as the first part of plan execution and rewrites the snapshot in-memory. In order to fit neatly within the existing framework for resource operations, these changes introduce a new kind of step, RefreshStep, to represent refreshes. RefreshSteps operate similar to ReadSteps but do not imply that the resource being read is not managed by Pulumi. In addition to the refresh reimplementation, these changes incorporate those from #1394 to run refresh in the integration test framework. Fixes #1598. Fixes pulumi/pulumi-terraform#165. Contributes to #1449.
64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
// Copyright 2016-2018, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package deploy
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import (
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"context"
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"github.com/pulumi/pulumi/pkg/tokens"
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"github.com/pulumi/pulumi/pkg/util/contract"
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)
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// NewFixedSource returns a valid planning source that is comprised of a list of pre-computed steps.
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func NewFixedSource(ctx tokens.PackageName, steps []SourceEvent) Source {
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return &fixedSource{ctx: ctx, steps: steps}
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}
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// A fixedSource just returns from a fixed set of resource states.
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type fixedSource struct {
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ctx tokens.PackageName
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steps []SourceEvent
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}
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func (src *fixedSource) Close() error { return nil }
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func (src *fixedSource) Project() tokens.PackageName { return src.ctx }
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func (src *fixedSource) Info() interface{} { return nil }
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func (src *fixedSource) Iterate(ctx context.Context, opts Options, providers ProviderSource) (SourceIterator, error) {
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contract.Ignore(ctx) // TODO[pulumi/pulumi#1714]
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return &fixedSourceIterator{
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src: src,
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current: -1,
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}, nil
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}
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// fixedSourceIterator always returns nil, nil in response to Next, indicating that it is done.
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type fixedSourceIterator struct {
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src *fixedSource
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current int
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}
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func (iter *fixedSourceIterator) Close() error {
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return nil // nothing to do.
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}
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func (iter *fixedSourceIterator) Next() (SourceEvent, error) {
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iter.current++
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if iter.current >= len(iter.src.steps) {
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return nil, nil
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}
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return iter.src.steps[iter.current], nil
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}
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