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table_partitions.go
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/
table_partitions.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
*
* http://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 executor
import (
"fmt"
"strings"
"github.com/apache/incubator-pegasus/admin-cli/tabular"
)
type PartitionStruct struct {
Pidx int32 `json:"pidx"`
PrimaryAddr string `json:"primary"`
SecondariesAddr string `json:"secondaries"`
}
func GetTablePartitions(client *Client, tableName string) (partitions []PartitionStruct, err error) {
resp, err := client.Meta.QueryConfig(tableName)
if err != nil {
return partitions, err
}
for _, partition := range resp.Partitions {
p := PartitionStruct{}
p.Pidx = partition.Pid.PartitionIndex
primary := client.Nodes.MustGetReplica(partition.Primary.GetAddress())
p.PrimaryAddr = primary.CombinedAddr()
var secondaries []string
for _, sec := range partition.Secondaries {
secNode := client.Nodes.MustGetReplica(sec.GetAddress())
secondaries = append(secondaries, secNode.CombinedAddr())
}
p.SecondariesAddr = strings.Join(secondaries, ",")
partitions = append(partitions, p)
}
return partitions, nil
}
func ShowPartitionCount(client *Client, tableName string) error {
resp, err := client.Meta.QueryConfig(tableName)
if err != nil {
return err
}
nodes, err := getNodesMap(client)
if err != nil {
return err
}
nodes, err = fillNodesInfo(nodes, resp.Partitions)
if err != nil {
return err
}
fmt.Println("[PartitionCount]")
printNodesInfo(client, nodes)
return nil
}
// ShowTablePartitions is table-partitions command
func ShowTablePartitions(client *Client, tableName string) error {
if err := ShowPartitionCount(client, tableName); err != nil {
return err
}
partitions, err := GetTablePartitions(client, tableName)
if err != nil {
return err
}
var partitionsInf []interface{}
for _, partition := range partitions {
partitionsInf = append(partitionsInf, partition)
}
fmt.Println("[PartitionDistribution]")
tabular.Print(client, partitionsInf)
return nil
}
func GetTablePartition(client *Client, tableName string, partitionIndex int32) (*PartitionStruct, error) {
partitions, err := GetTablePartitions(client, tableName)
if err != nil {
return nil, err
}
if partitionIndex >= int32(len(partitions)) {
return nil, fmt.Errorf("only have %d partitions, but you ask for %d", len(partitions), partitionIndex)
}
return &partitions[partitionIndex], nil
}