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gitea/vendor/github.com/olivere/elastic/v7/cat_allocation.go

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// Copyright 2012-present Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.
package elastic
import (
"context"
"fmt"
"net/http"
"net/url"
"strings"
"github.com/olivere/elastic/v7/uritemplates"
)
// CatAllocationService provides a snapshot of how many shards are allocated
// to each data node and how much disk space they are using.
//
// See https://www.elastic.co/guide/en/elasticsearch/reference/7.0/cat-allocation.html
// for details.
type CatAllocationService struct {
client *Client
pretty *bool // pretty format the returned JSON response
human *bool // return human readable values for statistics
errorTrace *bool // include the stack trace of returned errors
filterPath []string // list of filters used to reduce the response
headers http.Header // custom request-level HTTP headers
bytes string // b, k, m, or g
local *bool
masterTimeout string
nodes []string
columns []string
sort []string // list of columns for sort order
}
// NewCatAllocationService creates a new CatAllocationService.
func NewCatAllocationService(client *Client) *CatAllocationService {
return &CatAllocationService{
client: client,
}
}
// Pretty tells Elasticsearch whether to return a formatted JSON response.
func (s *CatAllocationService) Pretty(pretty bool) *CatAllocationService {
s.pretty = &pretty
return s
}
// Human specifies whether human readable values should be returned in
// the JSON response, e.g. "7.5mb".
func (s *CatAllocationService) Human(human bool) *CatAllocationService {
s.human = &human
return s
}
// ErrorTrace specifies whether to include the stack trace of returned errors.
func (s *CatAllocationService) ErrorTrace(errorTrace bool) *CatAllocationService {
s.errorTrace = &errorTrace
return s
}
// FilterPath specifies a list of filters used to reduce the response.
func (s *CatAllocationService) FilterPath(filterPath ...string) *CatAllocationService {
s.filterPath = filterPath
return s
}
// Header adds a header to the request.
func (s *CatAllocationService) Header(name string, value string) *CatAllocationService {
if s.headers == nil {
s.headers = http.Header{}
}
s.headers.Add(name, value)
return s
}
// Headers specifies the headers of the request.
func (s *CatAllocationService) Headers(headers http.Header) *CatAllocationService {
s.headers = headers
return s
}
// NodeID specifies one or more node IDs to for information should be returned.
func (s *CatAllocationService) NodeID(nodes ...string) *CatAllocationService {
s.nodes = nodes
return s
}
// Bytes represents the unit in which to display byte values.
// Valid values are: "b", "k", "m", or "g".
func (s *CatAllocationService) Bytes(bytes string) *CatAllocationService {
s.bytes = bytes
return s
}
// Local indicates to return local information, i.e. do not retrieve
// the state from master node (default: false).
func (s *CatAllocationService) Local(local bool) *CatAllocationService {
s.local = &local
return s
}
// MasterTimeout is the explicit operation timeout for connection to master node.
func (s *CatAllocationService) MasterTimeout(masterTimeout string) *CatAllocationService {
s.masterTimeout = masterTimeout
return s
}
// Columns to return in the response.
// To get a list of all possible columns to return, run the following command
// in your terminal:
//
// Example:
// curl 'http://localhost:9200/_cat/aliases?help'
//
// You can use Columns("*") to return all possible columns. That might take
// a little longer than the default set of columns.
func (s *CatAllocationService) Columns(columns ...string) *CatAllocationService {
s.columns = columns
return s
}
// Sort is a list of fields to sort by.
func (s *CatAllocationService) Sort(fields ...string) *CatAllocationService {
s.sort = fields
return s
}
// buildURL builds the URL for the operation.
func (s *CatAllocationService) buildURL() (string, url.Values, error) {
// Build URL
var (
path string
err error
)
if len(s.nodes) > 0 {
path, err = uritemplates.Expand("/_cat/allocation/{node_id}", map[string]string{
"node_id": strings.Join(s.nodes, ","),
})
} else {
path = "/_cat/allocation"
}
if err != nil {
return "", url.Values{}, err
}
// Add query string parameters
params := url.Values{
"format": []string{"json"}, // always returns as JSON
}
if v := s.pretty; v != nil {
params.Set("pretty", fmt.Sprint(*v))
}
if v := s.human; v != nil {
params.Set("human", fmt.Sprint(*v))
}
if v := s.errorTrace; v != nil {
params.Set("error_trace", fmt.Sprint(*v))
}
if len(s.filterPath) > 0 {
params.Set("filter_path", strings.Join(s.filterPath, ","))
}
if s.bytes != "" {
params.Set("bytes", s.bytes)
}
if v := s.local; v != nil {
params.Set("local", fmt.Sprint(*v))
}
if s.masterTimeout != "" {
params.Set("master_timeout", s.masterTimeout)
}
if len(s.sort) > 0 {
params.Set("s", strings.Join(s.sort, ","))
}
if len(s.columns) > 0 {
params.Set("h", strings.Join(s.columns, ","))
}
return path, params, nil
}
// Do executes the operation.
func (s *CatAllocationService) Do(ctx context.Context) (CatAllocationResponse, error) {
// Get URL for request
path, params, err := s.buildURL()
if err != nil {
return nil, err
}
// Get HTTP response
res, err := s.client.PerformRequest(ctx, PerformRequestOptions{
Method: "GET",
Path: path,
Params: params,
Headers: s.headers,
})
if err != nil {
return nil, err
}
// Return operation response
var ret CatAllocationResponse
if err := s.client.decoder.Decode(res.Body, &ret); err != nil {
return nil, err
}
return ret, nil
}
// -- Result of a get request.
// CatAllocationResponse is the outcome of CatAllocationService.Do.
type CatAllocationResponse []CatAllocationResponseRow
// CatAllocationResponseRow is a single row in a CatAllocationResponse.
// Notice that not all of these fields might be filled; that depends
// on the number of columns chose in the request (see CatAllocationService.Columns).
type CatAllocationResponseRow struct {
// Shards represents the number of shards on a node.
Shards int `json:"shards,string"`
// DiskIndices represents the disk used by ES indices, e.g. "46.1kb".
DiskIndices string `json:"disk.indices"`
// DiskUsed represents the disk used (total, not just ES), e.g. "34.5gb"
DiskUsed string `json:"disk.used"`
// DiskAvail represents the disk available, e.g. "53.2gb".
DiskAvail string `json:"disk.avail"`
// DiskTotal represents the total capacity of all volumes, e.g. "87.7gb".
DiskTotal string `json:"disk.total"`
// DiskPercent represents the percent of disk used, e.g. 39.
DiskPercent int `json:"disk.percent,string"`
// Host represents the hostname of the node.
Host string `json:"host"`
// IP represents the IP address of the node.
IP string `json:"ip"`
// Node represents the node ID.
Node string `json:"node"`
}