45 lines
1.4 KiB
Go
45 lines
1.4 KiB
Go
package issuer
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import (
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"fmt"
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"github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha1"
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)
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// Factory is an interface that can be used to obtain Issuer implementations.
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// It determines which issuer implementation to use by introspecting the
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// given Issuer resource.
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type Factory interface {
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IssuerFor(v1alpha1.GenericIssuer) (Interface, error)
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}
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// NewFactory returns a new issuer factory with the given issuer context.
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// The context will be injected into each Issuer upon creation.
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func NewFactory(ctx *Context) Factory {
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return &factory{ctx: ctx}
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}
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// factory is the default Factory implementation
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type factory struct {
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ctx *Context
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}
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// IssuerFor will return an Issuer interface for the given Issuer. If the
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// requested Issuer is not registered, an error will be returned.
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// A new instance of the Issuer will be returned for each call to IssuerFor,
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// however this is an inexpensive operation and so, Issuers should not need
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// to be cached and reused.
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func (f *factory) IssuerFor(issuer v1alpha1.GenericIssuer) (Interface, error) {
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issuerType, err := nameForIssuer(issuer)
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if err != nil {
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return nil, fmt.Errorf("could not get issuer type: %s", err.Error())
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}
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constructorsLock.RLock()
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defer constructorsLock.RUnlock()
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if constructor, ok := constructors[issuerType]; ok {
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return constructor(issuer, f.ctx)
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}
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return nil, fmt.Errorf("issuer '%s' not registered", issuerType)
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}
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