prometheus

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// Copyright 2022 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ionos
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import (
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	"context"
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	"fmt"
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	"net/http"
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	"net/http/httptest"
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	"os"
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	"testing"
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	ionoscloud "github.com/ionos-cloud/sdk-go/v6"
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	"github.com/prometheus/common/config"
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	"github.com/prometheus/common/model"
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	"github.com/stretchr/testify/require"
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)
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var (
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	ionosTestBearerToken  = config.Secret("jwt")
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	ionosTestDatacenterID = "8feda53f-15f0-447f-badf-ebe32dad2fc0"
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)
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func TestIONOSServerRefresh(t *testing.T) {
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	mock := httptest.NewServer(http.HandlerFunc(mockIONOSServers))
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	defer mock.Close()
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	cfg := DefaultSDConfig
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	cfg.DatacenterID = ionosTestDatacenterID
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	cfg.HTTPClientConfig.BearerToken = ionosTestBearerToken
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	cfg.ionosEndpoint = mock.URL
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	d, err := newServerDiscovery(&cfg, nil)
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	require.NoError(t, err)
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	ctx := context.Background()
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	tgs, err := d.refresh(ctx)
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	require.NoError(t, err)
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	require.Len(t, tgs, 1)
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	tg := tgs[0]
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	require.NotNil(t, tg)
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	require.NotNil(t, tg.Targets)
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	require.Len(t, tg.Targets, 2)
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	for i, lbls := range []model.LabelSet{
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		{
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			"__address__":                           "85.215.243.177:80",
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			"__meta_ionos_server_availability_zone": "ZONE_2",
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			"__meta_ionos_server_boot_cdrom_id":     "0e4d57f9-cd78-11e9-b88c-525400f64d8d",
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			"__meta_ionos_server_cpu_family":        "INTEL_SKYLAKE",
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			"__meta_ionos_server_id":                "b501942c-4e08-43e6-8ec1-00e59c64e0e4",
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			"__meta_ionos_server_ip":                ",85.215.243.177,185.56.150.9,85.215.238.118,",
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			"__meta_ionos_server_nic_ip_metrics":    ",85.215.243.177,",
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			"__meta_ionos_server_nic_ip_unnamed":    ",185.56.150.9,85.215.238.118,",
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			"__meta_ionos_server_lifecycle":         "AVAILABLE",
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			"__meta_ionos_server_name":              "prometheus-2",
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			"__meta_ionos_server_servers_id":        "8feda53f-15f0-447f-badf-ebe32dad2fc0/servers",
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			"__meta_ionos_server_state":             "RUNNING",
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			"__meta_ionos_server_type":              "ENTERPRISE",
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		},
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		{
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			"__address__":                           "85.215.248.84:80",
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			"__meta_ionos_server_availability_zone": "ZONE_1",
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			"__meta_ionos_server_boot_cdrom_id":     "0e4d57f9-cd78-11e9-b88c-525400f64d8d",
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			"__meta_ionos_server_cpu_family":        "INTEL_SKYLAKE",
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			"__meta_ionos_server_id":                "523415e6-ff8c-4dc0-86d3-09c256039b30",
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			"__meta_ionos_server_ip":                ",85.215.248.84,",
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			"__meta_ionos_server_nic_ip_unnamed":    ",85.215.248.84,",
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			"__meta_ionos_server_lifecycle":         "AVAILABLE",
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			"__meta_ionos_server_name":              "prometheus-1",
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			"__meta_ionos_server_servers_id":        "8feda53f-15f0-447f-badf-ebe32dad2fc0/servers",
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			"__meta_ionos_server_state":             "RUNNING",
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			"__meta_ionos_server_type":              "ENTERPRISE",
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		},
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	} {
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		t.Run(fmt.Sprintf("item %d", i), func(t *testing.T) {
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			require.Equal(t, lbls, tg.Targets[i])
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		})
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	}
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}
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func mockIONOSServers(w http.ResponseWriter, r *http.Request) {
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	if r.Header.Get("Authorization") != fmt.Sprintf("Bearer %s", ionosTestBearerToken) {
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		http.Error(w, "bad token", http.StatusUnauthorized)
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		return
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	}
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	if r.URL.Path != fmt.Sprintf("%s/datacenters/%s/servers", ionoscloud.DefaultIonosBasePath, ionosTestDatacenterID) {
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		http.Error(w, fmt.Sprintf("bad url: %s", r.URL.Path), http.StatusNotFound)
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		return
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	}
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	w.Header().Set("Content-Type", "application/json")
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	server, err := os.ReadFile("testdata/servers.json")
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	if err != nil {
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		http.Error(w, err.Error(), http.StatusInternalServerError)
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		return
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	}
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	_, err = w.Write(server)
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	if err != nil {
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		http.Error(w, err.Error(), http.StatusInternalServerError)
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		return
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	}
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}
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