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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
// Package nrelasticsearch instruments https://github.com/elastic/go-elasticsearch.
//
// Use this package to instrument your elasticsearch v7 calls without having to
// manually create DatastoreSegments.
package nrelasticsearch
import (
"net/http"
"strings"
"github.com/newrelic/go-agent/v3/internal"
newrelic "github.com/newrelic/go-agent/v3/newrelic"
)
func init() { internal.TrackUsage("integration", "datastore", "elasticsearch") }
func parseRequest(r *http.Request) (segment newrelic.DatastoreSegment) {
segment.StartTime = newrelic.FromContext(r.Context()).StartSegmentNow()
segment.Product = newrelic.DatastoreElasticsearch
path := strings.TrimPrefix(r.URL.Path, "/")
method := r.Method
if "" == path {
switch method {
case "GET":
segment.Operation = "info"
case "HEAD":
segment.Operation = "ping"
}
return
}
segments := strings.Split(path, "/")
for idx, s := range segments {
switch s {
case "_alias",
"_aliases",
"_analyze",
"_bulk",
"_cache",
"_cat",
"_clone",
"_close",
"_cluster",
"_count",
"_create",
"_delete_by_query",
"_explain",
"_field_caps",
"_flush",
"_forcemerge",
"_ingest",
"_mapping",
"_mappings",
"_mget",
"_msearch",
"_mtermvectors",
"_nodes",
"_open",
"_rank_eval",
"_recovery",
"_refresh",
"_reindex",
"_remote",
"_render",
"_rollover",
"_scripts",
"_search_shards",
"_segments",
"_settings",
"_shard_stores",
"_shrink",
"_snapshot",
"_source",
"_split",
"_stats",
"_tasks",
"_template",
"_termvectors",
"_update",
"_update_by_query",
"_upgrade",
"_validate":
segment.Operation = strings.TrimPrefix(s, "_")
if idx > 0 {
segment.Collection = segments[0]
}
return
case "_doc":
switch method {
case "DELETE":
segment.Operation = "delete"
case "HEAD":
segment.Operation = "exists"
case "GET":
segment.Operation = "get"
case "PUT":
segment.Operation = "update"
case "POST":
segment.Operation = "create"
}
if idx > 0 {
segment.Collection = segments[0]
}
return
case "_search":
// clear_scroll.json DELETE /_search/scroll
// clear_scroll.json DELETE /_search/scroll/{scroll_id}
// scroll.json GET /_search/scroll
// scroll.json GET /_search/scroll/{scroll_id}
// scroll.json POST /_search/scroll
// scroll.json POST /_search/scroll/{scroll_id}
// search.json GET /_search
// search.json GET /{index}/_search
// search.json GET /{index}/{type}/_search
// search.json POST /_search
// search.json POST /{index}/_search
// search.json POST /{index}/{type}/_search
// search_template.json GET /_search/template
// search_template.json GET /{index}/_search/template
// search_template.json GET /{index}/{type}/_search/template
// search_template.json POST /_search/template
// search_template.json POST /{index}/_search/template
// search_template.json POST /{index}/{type}/_search/template
if method == "DELETE" {
segment.Operation = "clear_scroll"
return
}
if idx == len(segments)-1 {
segment.Operation = "search"
if idx > 0 {
segment.Collection = segments[0]
}
return
}
next := segments[idx+1]
if next == "scroll" {
segment.Operation = "scroll"
return
}
if next == "template" {
segment.Operation = "search_template"
if idx > 0 {
segment.Collection = segments[0]
}
return
}
return
}
}
return
}
type roundtripper struct{ original http.RoundTripper }
func (t roundtripper) RoundTrip(r *http.Request) (*http.Response, error) {
segment := parseRequest(r)
defer segment.End()
return t.original.RoundTrip(r)
}
// NewRoundTripper creates a new http.RoundTripper to instrument elasticsearch
// calls. If an http.RoundTripper parameter is not provided, then the returned
// http.RoundTripper will delegate to http.DefaultTransport.
func NewRoundTripper(original http.RoundTripper) http.RoundTripper {
if nil == original {
original = http.DefaultTransport
}
return roundtripper{original: original}
}
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