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commit_proto_schema.go
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/
commit_proto_schema.go
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// Copyright 2023 Google LLC
//
// 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
//
// https://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 schema
// [START pubsub_commit_proto_schema]
import (
"context"
"fmt"
"io"
"io/ioutil"
"cloud.google.com/go/pubsub"
)
// commitProtoSchema commits a new proto schema revision to an existing schema.
func commitProtoSchema(w io.Writer, projectID, schemaID, protoFile string) error {
// projectID := "my-project-id"
// schemaID := "my-schema"
// protoFile = "path/to/a/proto/schema/file(.proto)/formatted/in/protocol/buffers"
ctx := context.Background()
client, err := pubsub.NewSchemaClient(ctx, projectID)
if err != nil {
return fmt.Errorf("pubsub.NewSchemaClient: %w", err)
}
defer client.Close()
// Read a proto file as a byte slice.
protoSource, err := ioutil.ReadFile(protoFile)
if err != nil {
return fmt.Errorf("error reading from file: %s", protoFile)
}
config := pubsub.SchemaConfig{
Name: fmt.Sprintf("projects/%s/schemas/%s", projectID, schemaID),
Type: pubsub.SchemaProtocolBuffer,
Definition: string(protoSource),
}
s, err := client.CommitSchema(ctx, schemaID, config)
if err != nil {
return fmt.Errorf("CommitSchema: %w", err)
}
fmt.Fprintf(w, "Committed a schema using a protobuf schema: %#v\n", s)
return nil
}
// [END pubsub_commit_proto_schema]