Kueri informasi tabel—termasuk skema, konfigurasi, pengaturan Stream, enkripsi sisi server (SSE), throughput tereservasi, dan indeks sekundernya—menggunakan Tablestore SDK untuk Go.
Prasyarat
Sebelum memulai, pastikan Anda telah:
Menginisialisasi klien. Untuk informasi selengkapnya, lihat Initialize a Tablestore client.
Referensi API
func (tableStoreClient *TableStoreClient) DescribeTable(request *DescribeTableRequest) (*DescribeTableResponse, error)Kode contoh
Contoh berikut mengkueri informasi tabel test_table.
func DescribeTableSample(client *tablestore.TableStoreClient) {
describeTableReq := new(tablestore.DescribeTableRequest)
describeTableReq.TableName = "test_table"
response, err := client.DescribeTable(describeTableReq)
if err != nil {
fmt.Println("Failed to describe table with error:", err)
} else {
// Dapatkan skema tabel.
tableMeta := response.TableMeta
fmt.Printf("* Nama tabel: %s \n", tableMeta.TableName)
fmt.Println("* Informasi kunci primer (tipe kunci primer 1:INTEGER,2:STRING,3:BINARY)")
for _, schemaEntry := range tableMeta.SchemaEntry {
fmt.Printf("%s:%v \n", *schemaEntry.Name, *schemaEntry.Type)
}
fmt.Println("* Informasi kolom pradefinisi (tipe kolom pradefinisi 1:INTEGER,2:DOUBLE,3:BOOLEAN,4:STRING,5:BINARY)")
for _, definedColumn := range tableMeta.DefinedColumns {
fmt.Printf("%s:%v \n", definedColumn.Name, definedColumn.ColumnType)
}
// Dapatkan konfigurasi tabel.
tableOption := response.TableOption
fmt.Println("* Konfigurasi tabel")
fmt.Printf("Versi maksimum: %d \n", tableOption.MaxVersion)
fmt.Printf("Time to live (TTL): %d \n", tableOption.TimeToAlive)
fmt.Printf("Offset versi maksimum: %d \n", tableOption.DeviationCellVersionInSec)
fmt.Printf("Izinkan pembaruan: %t \n", *tableOption.AllowUpdate)
// Dapatkan pengaturan Stream tabel.
streamDetails := response.StreamDetails
fmt.Printf("* Stream diaktifkan: %t \n", streamDetails.EnableStream)
if streamDetails.EnableStream {
fmt.Printf("Waktu kedaluwarsa Stream: %d \n", streamDetails.ExpirationTime)
}
// Dapatkan pengaturan enkripsi sisi server (SSE) tabel.
sseDetails := response.SSEDetails
fmt.Printf("* SSE diaktifkan: %t \n", sseDetails.Enable)
if sseDetails.Enable {
fmt.Printf("Tipe kunci enkripsi: %s \n", sseDetails.KeyType.String())
}
// Dapatkan throughput tereservasi tabel.
reservedThroughput := response.ReservedThroughput
fmt.Println("* Throughput tereservasi")
fmt.Printf("Throughput baca tereservasi: %d \n", reservedThroughput.Readcap)
fmt.Printf("Throughput tulis tereservasi: %d \n", reservedThroughput.Writecap)
// Dapatkan informasi indeks sekunder.
indexMetas := response.IndexMetas
for _, indexMeta := range indexMetas {
fmt.Printf("* Nama indeks sekunder: %s \n", indexMeta.IndexName)
fmt.Printf("Kolom kunci primer: %v \n", indexMeta.Primarykey)
fmt.Printf("Kolom pradefinisi: %v \n", indexMeta.DefinedColumns)
fmt.Printf("Tipe indeks sekunder: %d (0:IT_GLOBAL_INDEX,1:IT_LOCAL_INDEX) \n", indexMeta.IndexType)
}
}
}