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cluster_node.go
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cluster_node.go
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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: hello@weaviate.io
//
package clients
import (
"context"
"encoding/json"
"io"
"net/http"
"net/url"
"path"
enterrors "github.com/weaviate/weaviate/entities/errors"
"github.com/weaviate/weaviate/entities/models"
)
type RemoteNode struct {
client *http.Client
}
func NewRemoteNode(httpClient *http.Client) *RemoteNode {
return &RemoteNode{client: httpClient}
}
func (c *RemoteNode) GetNodeStatus(ctx context.Context, hostName, className, output string) (*models.NodeStatus, error) {
p := "/nodes/status"
if className != "" {
p = path.Join(p, className)
}
method := http.MethodGet
params := url.Values{"output": []string{output}}
url := url.URL{Scheme: "http", Host: hostName, Path: p, RawQuery: params.Encode()}
req, err := http.NewRequestWithContext(ctx, method, url.String(), nil)
if err != nil {
return nil, enterrors.NewErrOpenHttpRequest(err)
}
res, err := c.client.Do(req)
if err != nil {
return nil, enterrors.NewErrSendHttpRequest(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
if res.StatusCode != http.StatusOK {
return nil, enterrors.NewErrUnexpectedStatusCode(res.StatusCode, body)
}
var nodeStatus models.NodeStatus
err = json.Unmarshal(body, &nodeStatus)
if err != nil {
return nil, enterrors.NewErrUnmarshalBody(err)
}
return &nodeStatus, nil
}
func (c *RemoteNode) GetStatistics(ctx context.Context, hostName string) (*models.Statistics, error) {
p := "/nodes/statistics"
method := http.MethodGet
url := url.URL{Scheme: "http", Host: hostName, Path: p}
req, err := http.NewRequestWithContext(ctx, method, url.String(), nil)
if err != nil {
return nil, enterrors.NewErrOpenHttpRequest(err)
}
res, err := c.client.Do(req)
if err != nil {
return nil, enterrors.NewErrSendHttpRequest(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
if res.StatusCode != http.StatusOK {
return nil, enterrors.NewErrUnexpectedStatusCode(res.StatusCode, body)
}
var statistics models.Statistics
err = json.Unmarshal(body, &statistics)
if err != nil {
return nil, enterrors.NewErrUnmarshalBody(err)
}
return &statistics, nil
}