v1 Rollback to a schema revision (DEPRECATED)

  import 
  
 ( 
  
 "context" 
  
 "fmt" 
  
 "io" 
  
 "cloud.google.com/go/pubsub" 
 ) 
 // rollbackSchema creates a new schema revision that is a copy of the provided revisionID. 
 func 
  
 rollbackSchema 
 ( 
 w 
  
 io 
 . 
 Writer 
 , 
  
 projectID 
 , 
  
 schemaID 
 , 
  
 revisionID 
  
 string 
 ) 
  
 error 
  
 { 
  
 // projectID := "my-project-id" 
  
 // schemaID := "my-schema" 
  
 // revisionID := "a1b2c3d4" 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 pubsub 
 . 
 NewSchemaClient 
 ( 
 ctx 
 , 
  
 projectID 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "pubsub.NewSchemaClient: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 s 
 , 
  
 err 
  
 := 
  
 client 
 . 
 RollbackSchema 
 ( 
 ctx 
 , 
  
 schemaID 
 , 
  
 revisionID 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "RollbackSchema: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "Rolled back a schema: %#v\n" 
 , 
  
 s 
 ) 
  
 return 
  
 nil 
 }