02e3919539
## Description <!-- Add a description of the changes that this PR introduces and the files that are the most critical to review. --> --- ### Author Checklist *All items are required. Please add a note to the item if the item is not applicable and please add links to any relevant follow up issues.* I have... - [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [x] added `!` to the type prefix if API or client breaking change - [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting)) - [ ] provided a link to the relevant issue or specification - [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules) - [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing) - [ ] added a changelog entry to `CHANGELOG.md` - [x] included comments for [documenting Go code](https://blog.golang.org/godoc) - [ ] updated the relevant documentation or specification - [x] reviewed "Files changed" and left comments if necessary - [ ] confirmed all CI checks have passed ### Reviewers Checklist *All items are required. Please add a note if the item is not applicable and please add your handle next to the items reviewed if you only reviewed selected items.* I have... - [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [ ] confirmed `!` in the type prefix if API or client breaking change - [ ] confirmed all author checklist items have been addressed - [ ] reviewed state machine logic - [ ] reviewed API design and naming - [ ] reviewed documentation is accurate - [ ] reviewed tests and test coverage - [ ] manually tested (if applicable)
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package container
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import (
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"reflect"
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"github.com/pkg/errors"
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)
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// Option is a functional option for a container.
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type Option interface {
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apply(*container) error
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}
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// Provide creates a container option which registers the provided dependency
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// injection constructors. Each constructor will be called at most once with the
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// exception of scoped constructors which are called at most once per scope
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// (see Scope).
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func Provide(constructors ...interface{}) Option {
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return containerOption(func(ctr *container) error {
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return provide(ctr, nil, constructors)
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})
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}
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// ProvideWithScope creates a container option which registers the provided dependency
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// injection constructors that are to be run in the provided scope. Each constructor
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// will be called at most once.
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func ProvideWithScope(scopeName string, constructors ...interface{}) Option {
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return containerOption(func(ctr *container) error {
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if scopeName == "" {
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return errors.Errorf("expected non-empty scope name")
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}
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return provide(ctr, ctr.createOrGetScope(scopeName), constructors)
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})
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}
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func provide(ctr *container, scope Scope, constructors []interface{}) error {
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for _, c := range constructors {
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rc, err := ExtractProviderDescriptor(c)
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if err != nil {
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return errors.WithStack(err)
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}
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_, err = ctr.addNode(&rc, scope)
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if err != nil {
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return errors.WithStack(err)
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}
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}
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return nil
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}
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func Supply(values ...interface{}) Option {
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loc := LocationFromCaller(1)
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return containerOption(func(ctr *container) error {
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for _, v := range values {
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err := ctr.supply(reflect.ValueOf(v), loc)
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if err != nil {
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return errors.WithStack(err)
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}
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}
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return nil
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})
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}
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// Error creates an option which causes the dependency injection container to
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// fail immediately.
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func Error(err error) Option {
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return containerOption(func(*container) error {
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return errors.WithStack(err)
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})
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}
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// Options creates an option which bundles together other options.
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func Options(opts ...Option) Option {
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return containerOption(func(ctr *container) error {
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for _, opt := range opts {
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err := opt.apply(ctr)
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if err != nil {
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return errors.WithStack(err)
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}
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}
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return nil
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})
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}
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type containerOption func(*container) error
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func (c containerOption) apply(ctr *container) error {
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return c(ctr)
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}
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var _ Option = (*containerOption)(nil)
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