1f8f5e1b51
- architecture: introduction, Go modules and workspaces, application lifecycle, request lifecycle - plugins: registration, scheduling, extending, testing - verified Examples for backpack services, towel request context, pact schedules and festival events - TestDocsRequiredPages lists the eight new pages
43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
package backpack_test
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import (
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"fmt"
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"git.golem15.com/golem15/summercms/modules/backpack"
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"git.golem15.com/golem15/summercms/modules/compass"
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)
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// Greeter is a service the acme.greeter plugin offers to other plugins.
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type Greeter interface {
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Greet(name string) string
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}
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type englishGreeter struct{}
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func (englishGreeter) Greet(name string) string { return "Hello, " + name }
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func ExampleApp_Publish() {
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app := backpack.New(&compass.Config{})
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app.SetPlugins([]string{"acme.greeter", "acme.blog"})
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// acme.greeter, in its Register step: publish under the interface type.
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var greeter Greeter = englishGreeter{}
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if err := app.Publish(greeter); err != nil {
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fmt.Println(err)
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return
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}
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// acme.blog, in its Boot step: look the service up by the same type.
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if app.HasPlugin("acme.greeter") {
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if found, ok := app.Lookup[Greeter](); ok {
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fmt.Println(found.Greet("blog"))
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}
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}
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// A second Publish under the same type is refused.
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fmt.Println(app.Publish(greeter) != nil)
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// Output:
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// Hello, blog
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// true
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}
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