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optpreview.go
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optpreview.go
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// Copyright 2016-2020, Pulumi Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package optpreview contains functional options to be used with stack preview operations
// github.com/sdk/v2/go/x/auto Stack.Preview(...optpreview.Option)
package optpreview
// Parallel is the number of resource operations to run in parallel at once during the update
// (1 for no parallelism). Defaults to unbounded. (default 2147483647)
func Parallel(n int) Option {
return optionFunc(func(opts *Options) {
opts.Parallel = n
})
}
// Message (optional) to associate with the preview operation
func Message(message string) Option {
return optionFunc(func(opts *Options) {
opts.Message = message
})
}
// ExpectNoChanges will cause the preview to return an error if any changes occur
func ExpectNoChanges() Option {
return optionFunc(func(opts *Options) {
opts.ExpectNoChanges = true
})
}
// Replace specifies an array of resource URNs to explicitly replace during the preview
func Replace(urns []string) Option {
return optionFunc(func(opts *Options) {
opts.Replace = urns
})
}
// Target specifies an exclusive list of resource URNs to update
func Target(urns []string) Option {
return optionFunc(func(opts *Options) {
opts.Target = urns
})
}
// TargetDependents allows updating of dependent targets discovered but not specified in the Target list
func TargetDependents() Option {
return optionFunc(func(opts *Options) {
opts.TargetDependents = true
})
}
// Option is a parameter to be applied to a Stack.Preview() operation
type Option interface {
ApplyOption(*Options)
}
// ---------------------------------- implementation details ----------------------------------
// Options is an implementation detail
type Options struct {
// Parallel is the number of resource operations to run in parallel at once
// (1 for no parallelism). Defaults to unbounded. (default 2147483647)
Parallel int
// Message (optional) to associate with the preview operation
Message string
// Return an error if any changes occur during this preview
ExpectNoChanges bool
// Specify resources to replace
Replace []string
// Specify an exclusive list of resource URNs to update
Target []string
// Allows updating of dependent targets discovered but not specified in the Target list
TargetDependents bool
}
type optionFunc func(*Options)
// ApplyOption is an implementation detail
func (o optionFunc) ApplyOption(opts *Options) {
o(opts)
}