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// Copyright 2024 The Prometheus Authors
// Licensed 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 collector
import (
"io"
"net/http"
"net/http/httptest"
"net/url"
"os"
"path"
"strings"
"testing"
"github.com/prometheus/client_golang/prometheus/testutil"
"github.com/prometheus/common/promslog"
)
func TestShards(t *testing.T) {
// Testcases created using:
// docker run --rm -d -p 9200:9200 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:$VERSION
// curl -XPUT http://localhost:9200/testindex
// curl -XPUT http://localhost:9200/otherindex
// curl http://localhost:9200/_cat/shards?format=json > fixtures/shards/$VERSION.json
tests := []struct {
name string
file string
want string
}{
{
name: "7.15.0",
file: "7.15.0.json",
want: `# HELP elasticsearch_node_shards_json_parse_failures Number of errors while parsing JSON.
# TYPE elasticsearch_node_shards_json_parse_failures counter
elasticsearch_node_shards_json_parse_failures 0
# HELP elasticsearch_node_shards_total Total shards per node
# TYPE elasticsearch_node_shards_total gauge
elasticsearch_node_shards_total{cluster="unknown_cluster",node="35dfca79831a"} 3
`,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
f, err := os.Open(path.Join("../fixtures/shards/", tt.file))
if err != nil {
t.Fatal(err)
}
defer f.Close()
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
io.Copy(w, f)
}))
defer ts.Close()
u, err := url.Parse(ts.URL)
if err != nil {
t.Fatalf("Failed to parse URL: %s", err)
}
s := NewShards(promslog.NewNopLogger(), http.DefaultClient, u)
if err != nil {
t.Fatal(err)
}
if err := testutil.CollectAndCompare(s, strings.NewReader(tt.want)); err != nil {
t.Fatal(err)
}
})
}
}
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