func runExample(client *as.Client) {
key, err := as.NewKey(*shared.Namespace, *shared.Set, "prependkey")
shared.PanicOnError(err)
binName := "prependbin"
// Delete record if it already exists.
client.Delete(shared.WritePolicy, key)
bin := as.NewBin(binName, "World")
log.Println("Initial prepend will create record. Initial value is ", bin.Value, ".")
client.PrependBins(shared.WritePolicy, key, bin)
bin = as.NewBin(binName, "Hello ")
log.Println("Prepend \"", bin.Value, "\" to existing record.")
client.PrependBins(shared.WritePolicy, key, bin)
record, err := client.Get(shared.Policy, key, bin.Name)
shared.PanicOnError(err)
if record == nil {
log.Fatalf(
"Failed to get: namespace=%s set=%s key=%s",
key.Namespace(), key.SetName(), key.Value())
}
// The value received from the server is an unsigned byte stream.
// Convert to an integer before comparing with expected.
received := record.Bins[bin.Name]
expected := "Hello World"
if received == expected {
log.Printf("Prepend successful: ns=%s set=%s key=%s bin=%s value=%s",
key.Namespace(), key.SetName(), key.Value(), bin.Name, received)
} else {
log.Fatalf("Prepend mismatch: Expected %s. Received %s.", expected, received)
}
}
