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indices_flush_synced.go
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indices_flush_synced.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"
"encoding/json"
"fmt"
"net/http"
"net/url"
"strings"
"github.com/olivere/elastic/uritemplates"
)
// IndicesSyncedFlushService performs a normal flush, then adds a generated
// unique marked (sync_id) to all shards.
//
// See https://www.elastic.co/guide/en/elasticsearch/reference/6.8/indices-synced-flush.html
// for details.
type IndicesSyncedFlushService 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
index []string
ignoreUnavailable *bool
allowNoIndices *bool
expandWildcards string
}
// NewIndicesSyncedFlushService creates a new IndicesSyncedFlushService.
func NewIndicesSyncedFlushService(client *Client) *IndicesSyncedFlushService {
return &IndicesSyncedFlushService{
client: client,
}
}
// Pretty tells Elasticsearch whether to return a formatted JSON response.
func (s *IndicesSyncedFlushService) Pretty(pretty bool) *IndicesSyncedFlushService {
s.pretty = &pretty
return s
}
// Human specifies whether human readable values should be returned in
// the JSON response, e.g. "7.5mb".
func (s *IndicesSyncedFlushService) Human(human bool) *IndicesSyncedFlushService {
s.human = &human
return s
}
// ErrorTrace specifies whether to include the stack trace of returned errors.
func (s *IndicesSyncedFlushService) ErrorTrace(errorTrace bool) *IndicesSyncedFlushService {
s.errorTrace = &errorTrace
return s
}
// FilterPath specifies a list of filters used to reduce the response.
func (s *IndicesSyncedFlushService) FilterPath(filterPath ...string) *IndicesSyncedFlushService {
s.filterPath = filterPath
return s
}
// Header adds a header to the request.
func (s *IndicesSyncedFlushService) Header(name string, value string) *IndicesSyncedFlushService {
if s.headers == nil {
s.headers = http.Header{}
}
s.headers.Add(name, value)
return s
}
// Headers specifies the headers of the request.
func (s *IndicesSyncedFlushService) Headers(headers http.Header) *IndicesSyncedFlushService {
s.headers = headers
return s
}
// Index is a list of index names; use `_all` or empty string for all indices.
func (s *IndicesSyncedFlushService) Index(indices ...string) *IndicesSyncedFlushService {
s.index = append(s.index, indices...)
return s
}
// IgnoreUnavailable indicates whether specified concrete indices should be
// ignored when unavailable (missing or closed).
func (s *IndicesSyncedFlushService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesSyncedFlushService {
s.ignoreUnavailable = &ignoreUnavailable
return s
}
// AllowNoIndices indicates whether to ignore if a wildcard indices expression
// resolves into no concrete indices. (This includes `_all` string or when
// no indices have been specified).
func (s *IndicesSyncedFlushService) AllowNoIndices(allowNoIndices bool) *IndicesSyncedFlushService {
s.allowNoIndices = &allowNoIndices
return s
}
// ExpandWildcards specifies whether to expand wildcard expression to
// concrete indices that are open, closed or both..
func (s *IndicesSyncedFlushService) ExpandWildcards(expandWildcards string) *IndicesSyncedFlushService {
s.expandWildcards = expandWildcards
return s
}
// buildURL builds the URL for the operation.
func (s *IndicesSyncedFlushService) buildURL() (string, url.Values, error) {
// Build URL
var err error
var path string
if len(s.index) > 0 {
path, err = uritemplates.Expand("/{index}/_flush/synced", map[string]string{
"index": strings.Join(s.index, ","),
})
} else {
path = "/_flush/synced"
}
if err != nil {
return "", url.Values{}, err
}
// Add query string parameters
params := url.Values{}
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.ignoreUnavailable != nil {
params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
}
if s.allowNoIndices != nil {
params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
}
if s.expandWildcards != "" {
params.Set("expand_wildcards", s.expandWildcards)
}
return path, params, nil
}
// Validate checks if the operation is valid.
func (s *IndicesSyncedFlushService) Validate() error {
return nil
}
// Do executes the service.
func (s *IndicesSyncedFlushService) Do(ctx context.Context) (*IndicesSyncedFlushResponse, error) {
// Check pre-conditions
if err := s.Validate(); err != nil {
return nil, err
}
// 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: "POST",
Path: path,
Params: params,
Headers: s.headers,
})
if err != nil {
return nil, err
}
// Return operation response
ret := new(IndicesSyncedFlushResponse)
if err := s.client.decoder.Decode(res.Body, ret); err != nil {
return nil, err
}
return ret, nil
}
// -- Result of a flush request.
// IndicesSyncedFlushResponse is the outcome of a synched flush call.
type IndicesSyncedFlushResponse struct {
Shards *ShardsInfo `json:"_shards"`
Index map[string]*IndicesShardsSyncedFlushResult `json:"-"`
// TODO Add information about the indices here from the root level
// It looks like this:
// {
// "_shards" : {
// "total" : 4,
// "successful" : 4,
// "failed" : 0
// },
// "elastic-test" : {
// "total" : 1,
// "successful" : 1,
// "failed" : 0
// },
// "elastic-test2" : {
// "total" : 1,
// "successful" : 1,
// "failed" : 0
// },
// "elastic-orders" : {
// "total" : 1,
// "successful" : 1,
// "failed" : 0
// },
// "elastic-nosource-test" : {
// "total" : 1,
// "successful" : 1,
// "failed" : 0
// }
// }
}
// IndicesShardsSyncedFlushResult represents synced flush information about
// a specific index.
type IndicesShardsSyncedFlushResult struct {
Total int `json:"total"`
Successful int `json:"successful"`
Failed int `json:"failed"`
Failures []IndicesShardsSyncedFlushResultFailure `json:"failures,omitempty"`
}
// IndicesShardsSyncedFlushResultFailure represents a failure of a synced
// flush operation.
type IndicesShardsSyncedFlushResultFailure struct {
Shard int `json:"shard"`
Reason string `json:"reason"`
Routing struct {
State string `json:"state"`
Primary bool `json:"primary"`
Node string `json:"node"`
RelocatingNode *string `json:"relocating_node"`
Shard int `json:"shard"`
Index string `json:"index"`
ExpectedShardSizeInBytes int64 `json:"expected_shard_size_in_bytes,omitempty"`
// recoverySource
// allocationId
// unassignedInfo
} `json:"routing"`
}
// UnmarshalJSON parses the output from Synced Flush API.
func (resp *IndicesSyncedFlushResponse) UnmarshalJSON(data []byte) error {
m := make(map[string]json.RawMessage)
err := json.Unmarshal(data, &m)
if err != nil {
return err
}
resp.Index = make(map[string]*IndicesShardsSyncedFlushResult)
for k, v := range m {
if k == "_shards" {
if err := json.Unmarshal(v, &resp.Shards); err != nil {
return err
}
} else {
ix := new(IndicesShardsSyncedFlushResult)
if err := json.Unmarshal(v, &ix); err != nil {
return err
}
resp.Index[k] = ix
}
}
return nil
}