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/
client.go
69 lines (58 loc) · 1.99 KB
/
client.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"
"io"
"os"
"github.com/pegasus-kv/admin-cli/admin-cli/client"
"github.com/pegasus-kv/admin-cli/admin-cli/util"
"github.com/pegasus-kv/collector/aggregate"
)
// Client represents as a manager of various SDKs that
// can access both Pegasus ReplicaServer and MetaServer.
type Client struct {
// Every command should use Client as the fmt.Fprint's writer.
io.Writer
// to access administration APIs
Meta client.Meta
// to obtain perf-counters of ReplicaServers
Perf *aggregate.PerfClient
Nodes *util.PegasusNodeManager
}
// NewClient creates a client for accessing Pegasus cluster for use of admin-cli.
func NewClient(writer io.Writer, metaAddrs []string) *Client {
meta := client.NewRPCBasedMeta(metaAddrs)
// TODO(wutao): initialize replica-nodes lazily
nodes, err := meta.ListNodes()
if err != nil {
fmt.Fprintf(writer, "fatal: failed to list nodes [%s]\n", err)
os.Exit(1)
}
var replicaAddrs []string
for _, node := range nodes {
replicaAddrs = append(replicaAddrs, node.Address.GetAddress())
}
return &Client{
Writer: writer,
Meta: meta,
Nodes: util.NewPegasusNodeManager(metaAddrs, replicaAddrs),
Perf: aggregate.NewPerfClient(metaAddrs),
}
}