mirror of https://github.com/dapr/docs.git
update example based on go sdk for transactional state
Signed-off-by: Hannah Hunter <hannahhunter@microsoft.com>
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@ -115,29 +115,29 @@ You can override the outbox pattern message saved to the database during the tra
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In the following Go example of a state transaction, the value of `"2"` is saved to the database, but the value of `"3"` is published to the end-user topic.
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```go
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_, err = runtimev1pb.NewDaprClient(conn).ExecuteStateTransaction(ctx, &runtimev1pb.ExecuteStateTransactionRequest{
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StoreName: "mystore",
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Operations: []*runtimev1pb.TransactionalStateOperation{
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{
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OperationType: "upsert",
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Request: &common.StateItem{
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Key: "1",
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Value: []byte("2"),
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},
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},
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{
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OperationType: "upsert",
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Request: &common.StateItem{
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Key: "1",
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Value: []byte("3"),
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// Override the data payload saved to the database
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Metadata: map[string]string{
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"outbox.projection": "true",
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},
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},
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},
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},
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})
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ops := make([]*dapr.StateOperation, 0)
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op1 := &dapr.StateOperation{
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Type: dapr.StateOperationTypeUpsert,
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Item: &dapr.SetStateItem{
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Key: "key1",
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Value: []byte("2"),
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},
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}
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op2 := &dapr.StateOperation{
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Type: dapr.StateOperationTypeUpsert,
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Item: &dapr.SetStateItem{
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Key: "key1",
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Value: []byte("3"),
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// Override the data payload saved to the database
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Metadata: map[string]string{
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"outbox.projection": "true",
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},
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},
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}
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ops = append(ops, op1, op2)
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meta := map[string]string{}
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err := testClient.ExecuteStateTransaction(ctx, store, meta, ops)
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```
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By setting the metadata item `"outbox.projection"` to `"true"`, the transaction value saved to the database is ignored, while the second value is published to the configured pub/sub topic.
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