mirror of https://github.com/pulumi/pulumi.git
75 lines
2.4 KiB
Go
75 lines
2.4 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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"crypto"
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"encoding/binary"
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"github.com/pulumi/pulumi/sdk/v3/go/common/resource"
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"github.com/pulumi/pulumi/sdk/v3/go/common/resource/config"
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"github.com/pulumi/pulumi/sdk/v3/go/common/tokens"
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"github.com/pulumi/pulumi/sdk/v3/go/common/util/contract"
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)
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// Target represents information about a deployment target.
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type Target struct {
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Name tokens.Name // the target stack name.
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Config config.Map // optional configuration key/value pairs.
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Decrypter config.Decrypter // decrypter for secret configuration values.
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Snapshot *Snapshot // the last snapshot deployed to the target.
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Entropy []byte // the entropy for this target.
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}
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// Build the entropy for a resource call, this is a 512 bit hash of the stack entropy, the urn and the sequence number
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func (t *Target) GetEntropy(urn resource.URN, sequenceNumber int) []byte {
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hasher := crypto.SHA512.New()
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_, err := hasher.Write(t.Entropy)
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contract.AssertNoError(err)
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_, err = hasher.Write([]byte(urn))
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contract.AssertNoError(err)
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err = binary.Write(hasher, binary.LittleEndian, uint32(sequenceNumber))
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contract.AssertNoError(err)
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entropy := hasher.Sum(nil)
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contract.Assert(len(entropy) == 64)
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return entropy
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}
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// GetPackageConfig returns the set of configuration parameters for the indicated package, if any.
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func (t *Target) GetPackageConfig(pkg tokens.Package) (resource.PropertyMap, error) {
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result := resource.PropertyMap{}
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if t == nil {
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return result, nil
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}
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for k, c := range t.Config {
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if tokens.Package(k.Namespace()) != pkg {
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continue
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}
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v, err := c.Value(t.Decrypter)
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if err != nil {
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return nil, err
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}
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propertyValue := resource.NewStringProperty(v)
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if c.Secure() {
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propertyValue = resource.MakeSecret(propertyValue)
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}
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result[resource.PropertyKey(k.Name())] = propertyValue
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}
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return result, nil
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}
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