Fix linting

Signed-off-by: Friedrich Gonzalez <friedrichg@gmail.com>

cmd/e2ealerting/main.go

@@ -4,9 +4,10 @@ import (
 	"flag"
 	"os"
 
-	"github.com/cortexproject/cortex-tools/pkg/alerting"
 	"github.com/go-kit/log/level"
 
+	"github.com/cortexproject/cortex-tools/pkg/alerting"
+
 	"github.com/cortexproject/cortex/pkg/util/flagext"
 	util_log "github.com/cortexproject/cortex/pkg/util/log"
 	"github.com/prometheus/client_golang/prometheus"

cmd/logtool/main.go

@@ -45,7 +45,7 @@ func main() {
 	for scanner.Scan() {
 		show := false
 		var qt time.Time
-		var dur, len time.Duration
+		var dur, length time.Duration
 		var status, path, query, trace string
 		var err error
 
@@ -99,13 +99,13 @@ func main() {
 							fmt.Println(err, line)
 							continue
 						}
-						len = et.Sub(st)
+						length = et.Sub(st)
 					} else {
 						// Loki queries are nanosecond, simple check to see if it's a second or nanosecond timestamp
 						if st > 9999999999 {
-							len = time.Unix(0, et).Sub(time.Unix(0, st))
+							length = time.Unix(0, et).Sub(time.Unix(0, st))
 						} else {
-							len = time.Unix(et, 0).Sub(time.Unix(st, 0))
+							length = time.Unix(et, 0).Sub(time.Unix(st, 0))
 						}
 
 					}
@@ -132,9 +132,9 @@ func main() {
 				ts = fmt.Sprint(qt.Local())
 			}
 			if *showQuery {
-				fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\n", ts, trace, len, dur, status, path, query)
+				fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\n", ts, trace, length, dur, status, path, query)
 			} else {
-				fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\n", ts, trace, len, dur, status, path)
+				fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\n", ts, trace, length, dur, status, path)
 			}
 			//If looking at stdin, flush after every line as someone would only paste one line at a time at the terminal
 			if !isPipe {

pkg/alerting/runner.go

@@ -9,12 +9,13 @@ import (
 	"sync"
 	"time"
 
-	"github.com/cortexproject/cortex-tools/pkg/client"
-	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 	yaml "gopkg.in/yaml.v3"
+
+	"github.com/cortexproject/cortex-tools/pkg/client"
+	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 )
 
 // Case represents a metric that can be used for exporting, then verified against an Alertmanager webhook

pkg/analyse/ruler.go

@@ -3,10 +3,11 @@ package analyse
 import (
 	"sort"
 
-	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 	"github.com/pkg/errors"
 	"github.com/prometheus/prometheus/promql/parser"
 	log "github.com/sirupsen/logrus"
+
+	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 )
 
 type MetricsInRuler struct {

pkg/bench/query_runner.go

@@ -204,8 +204,8 @@ func (q *queryRunner) executeQuery(ctx context.Context, queryReq query) error {
 	now := time.Now()
 
 	var (
-		queryType string = "instant"
-		status    string = "success"
+		queryType = "instant"
+		status    = "success"
 	)
 	if queryReq.timeRange > 0 {
 		queryType = "range"

pkg/bench/write_client.go

@@ -39,7 +39,7 @@ type writeClient struct {
 }
 
 // newWriteClient creates a new client for remote write.
-func newWriteClient(name string, tenantName string, conf *remote.ClientConfig, logger log.Logger, requestHistogram *prometheus.HistogramVec) (*writeClient, error) {
+func newWriteClient(name string, tenantName string, conf *remote.ClientConfig, _ log.Logger, requestHistogram *prometheus.HistogramVec) (*writeClient, error) {
 	httpClient, err := config_util.NewClientFromConfig(conf.HTTPClientConfig, "bench_write_client", config_util.WithHTTP2Disabled())
 	if err != nil {
 		return nil, err

pkg/chunk/cassandra/storage_client.go

@@ -196,4 +196,4 @@ func (noopConvictionPolicy) AddFailure(err error, host *gocql.HostInfo) bool {
 }
 
 // Implementats gocql.ConvictionPolicy.
-func (noopConvictionPolicy) Reset(host *gocql.HostInfo) {}
+func (noopConvictionPolicy) Reset(_ *gocql.HostInfo) {}

pkg/chunk/migrate/writer/writer.go

@@ -91,7 +91,7 @@ func (w *Writer) Run(ctx context.Context, inChan chan chunk.Chunk) {
 	}
 }
 
-func (w *Writer) writeLoop(ctx context.Context, workerID int, inChan chan chunk.Chunk, errChan chan error) {
+func (w *Writer) writeLoop(ctx context.Context, _ int, inChan chan chunk.Chunk, errChan chan error) {
 	defer w.workerGroup.Done()
 
 	for {

pkg/client/alerts.go

@@ -17,7 +17,7 @@ type configCompat struct {
 }
 
 // CreateAlertmanagerConfig creates a new alertmanager config
-func (r *CortexClient) CreateAlertmanagerConfig(ctx context.Context, cfg string, templates map[string]string) error {
+func (r *CortexClient) CreateAlertmanagerConfig(_ context.Context, cfg string, templates map[string]string) error {
 	payload, err := yaml.Marshal(&configCompat{
 		TemplateFiles:      templates,
 		AlertmanagerConfig: cfg,

pkg/client/client.go

@@ -102,7 +102,7 @@ func New(cfg Config) (*CortexClient, error) {
 }
 
 // Query executes a PromQL query against the Cortex cluster.
-func (r *CortexClient) Query(ctx context.Context, query string) (*http.Response, error) {
+func (r *CortexClient) Query(_ context.Context, query string) (*http.Response, error) {
 
 	query = fmt.Sprintf("query=%s&time=%d", query, time.Now().Unix())
 	escapedQuery := url.PathEscape(query)

pkg/client/rules.go

@@ -14,7 +14,7 @@ import (
 )
 
 // CreateRuleGroup creates a new rule group
-func (r *CortexClient) CreateRuleGroup(ctx context.Context, namespace string, rg rwrulefmt.RuleGroup) error {
+func (r *CortexClient) CreateRuleGroup(_ context.Context, namespace string, rg rwrulefmt.RuleGroup) error {
 	payload, err := yaml.Marshal(&rg)
 	if err != nil {
 		return err
@@ -34,7 +34,7 @@ func (r *CortexClient) CreateRuleGroup(ctx context.Context, namespace string, rg
 }
 
 // DeleteRuleGroup deletes a rule group
-func (r *CortexClient) DeleteRuleGroup(ctx context.Context, namespace, groupName string) error {
+func (r *CortexClient) DeleteRuleGroup(_ context.Context, namespace, groupName string) error {
 	escapedNamespace := url.PathEscape(namespace)
 	escapedGroupName := url.PathEscape(groupName)
 	path := r.apiPath + "/" + escapedNamespace + "/" + escapedGroupName
@@ -50,7 +50,7 @@ func (r *CortexClient) DeleteRuleGroup(ctx context.Context, namespace, groupName
 }
 
 // DeleteRuleNamespace deletes a rule namespace
-func (r *CortexClient) DeleteRuleNamespace(ctx context.Context, namespace string) error {
+func (r *CortexClient) DeleteRuleNamespace(_ context.Context, namespace string) error {
 	escapedNamespace := url.PathEscape(namespace)
 	path := r.apiPath + "/" + escapedNamespace
 
@@ -65,7 +65,7 @@ func (r *CortexClient) DeleteRuleNamespace(ctx context.Context, namespace string
 }
 
 // GetRuleGroup retrieves a rule group
-func (r *CortexClient) GetRuleGroup(ctx context.Context, namespace, groupName string) (*rwrulefmt.RuleGroup, error) {
+func (r *CortexClient) GetRuleGroup(_ context.Context, namespace, groupName string) (*rwrulefmt.RuleGroup, error) {
 	escapedNamespace := url.PathEscape(namespace)
 	escapedGroupName := url.PathEscape(groupName)
 	path := r.apiPath + "/" + escapedNamespace + "/" + escapedGroupName
@@ -97,7 +97,7 @@ func (r *CortexClient) GetRuleGroup(ctx context.Context, namespace, groupName st
 }
 
 // ListRules retrieves a rule group
-func (r *CortexClient) ListRules(ctx context.Context, namespace string) (map[string][]rwrulefmt.RuleGroup, error) {
+func (r *CortexClient) ListRules(_ context.Context, namespace string) (map[string][]rwrulefmt.RuleGroup, error) {
 	path := r.apiPath
 	if namespace != "" {
 		path = path + "/" + namespace

pkg/commands/access_control.go

@@ -25,7 +25,7 @@ func (a *AccessControlCommand) Register(app *kingpin.Application) {
 	generateHeaderCmd.Flag("rule", "The access control rules (Prometheus selectors). Set it multiple times to set multiple rules.").Required().StringsVar(&a.ACLs)
 }
 
-func (a *AccessControlCommand) generateHeader(k *kingpin.ParseContext) error {
+func (a *AccessControlCommand) generateHeader(_ *kingpin.ParseContext) error {
 	for _, acl := range a.ACLs {
 		_, err := parser.ParseMetricSelector(acl)
 		if err != nil {

pkg/commands/alerts.go

@@ -83,7 +83,7 @@ func (a *AlertmanagerCommand) Register(app *kingpin.Application) {
 	loadalertCmd.Arg("template-files", "The template files to load").ExistingFilesVar(&a.TemplateFiles)
 }
 
-func (a *AlertmanagerCommand) setup(k *kingpin.ParseContext) error {
+func (a *AlertmanagerCommand) setup(_ *kingpin.ParseContext) error {
 	cli, err := client.New(a.ClientConfig)
 	if err != nil {
 		return err
@@ -93,7 +93,7 @@ func (a *AlertmanagerCommand) setup(k *kingpin.ParseContext) error {
 	return nil
 }
 
-func (a *AlertmanagerCommand) getConfig(k *kingpin.ParseContext) error {
+func (a *AlertmanagerCommand) getConfig(_ *kingpin.ParseContext) error {
 	cfg, templates, err := a.cli.GetAlertmanagerConfig(context.Background())
 	if err != nil {
 		if err == client.ErrResourceNotFound {
@@ -108,7 +108,7 @@ func (a *AlertmanagerCommand) getConfig(k *kingpin.ParseContext) error {
 	return p.PrintAlertmanagerConfig(cfg, templates)
 }
 
-func (a *AlertmanagerCommand) loadConfig(k *kingpin.ParseContext) error {
+func (a *AlertmanagerCommand) loadConfig(_ *kingpin.ParseContext) error {
 	content, err := ioutil.ReadFile(a.AlertmanagerConfigFile)
 	if err != nil {
 		return errors.Wrap(err, "unable to load config file: "+a.AlertmanagerConfigFile)
@@ -132,7 +132,7 @@ func (a *AlertmanagerCommand) loadConfig(k *kingpin.ParseContext) error {
 	return a.cli.CreateAlertmanagerConfig(context.Background(), cfg, templates)
 }
 
-func (a *AlertmanagerCommand) deleteConfig(k *kingpin.ParseContext) error {
+func (a *AlertmanagerCommand) deleteConfig(_ *kingpin.ParseContext) error {
 	err := a.cli.DeleteAlermanagerConfig(context.Background())
 	if err != nil && err != client.ErrResourceNotFound {
 		return err
@@ -155,7 +155,7 @@ func (a *AlertCommand) Register(app *kingpin.Application) {
 	verifyAlertsCmd.Flag("frequency", "Setting this value will turn cortextool into a long-running process, running the alerts verify check every # of minutes specified").IntVar(&a.CheckFrequency)
 }
 
-func (a *AlertCommand) setup(k *kingpin.ParseContext) error {
+func (a *AlertCommand) setup(_ *kingpin.ParseContext) error {
 	cli, err := client.New(a.ClientConfig)
 	if err != nil {
 		return err
@@ -179,7 +179,7 @@ type metric struct {
 	Metric map[string]string `json:"metric"`
 }
 
-func (a *AlertCommand) verifyConfig(k *kingpin.ParseContext) error {
+func (a *AlertCommand) verifyConfig(_ *kingpin.ParseContext) error {
 	var empty interface{}
 	if a.IgnoreString != "" {
 		a.IgnoreAlerts = make(map[string]interface{})

pkg/commands/analyse_dashboards.go

@@ -16,7 +16,7 @@ type DashboardAnalyseCommand struct {
 	outputFile    string
 }
 
-func (cmd *DashboardAnalyseCommand) run(k *kingpin.ParseContext) error {
+func (cmd *DashboardAnalyseCommand) run(_ *kingpin.ParseContext) error {
 	output := &analyse.MetricsInGrafana{}
 	output.OverallMetrics = make(map[string]struct{})
 

pkg/commands/analyse_grafana.go

@@ -23,7 +23,7 @@ type GrafanaAnalyseCommand struct {
 	outputFile string
 }
 
-func (cmd *GrafanaAnalyseCommand) run(k *kingpin.ParseContext) error {
+func (cmd *GrafanaAnalyseCommand) run(_ *kingpin.ParseContext) error {
 	output := &analyse.MetricsInGrafana{}
 	output.OverallMetrics = make(map[string]struct{})
 
@@ -70,9 +70,5 @@ func writeOut(mig *analyse.MetricsInGrafana, outputFile string) error {
 		return err
 	}
 
-	if err := ioutil.WriteFile(outputFile, out, os.FileMode(int(0666))); err != nil {
-		return err
-	}
-
-	return nil
+	return ioutil.WriteFile(outputFile, out, os.FileMode(int(0666)))
 }

pkg/commands/analyse_prometheus.go

@@ -31,7 +31,7 @@ type PrometheusAnalyseCommand struct {
 	outputFile         string
 }
 
-func (cmd *PrometheusAnalyseCommand) run(k *kingpin.ParseContext) error {
+func (cmd *PrometheusAnalyseCommand) run(_ *kingpin.ParseContext) error {
 	var (
 		hasGrafanaMetrics, hasRulerMetrics = false, false
 		grafanaMetrics                     = analyse.MetricsInGrafana{}
@@ -228,9 +228,5 @@ func (cmd *PrometheusAnalyseCommand) run(k *kingpin.ParseContext) error {
 		return err
 	}
 
-	if err := ioutil.WriteFile(cmd.outputFile, out, os.FileMode(int(0666))); err != nil {
-		return err
-	}
-
-	return nil
+	return ioutil.WriteFile(cmd.outputFile, out, os.FileMode(int(0666)))
 }

pkg/commands/analyse_ruler.go

@@ -65,9 +65,5 @@ func writeOutRuleMetrics(mir *analyse.MetricsInRuler, outputFile string) error {
 		return err
 	}
 
-	if err := ioutil.WriteFile(outputFile, out, os.FileMode(int(0666))); err != nil {
-		return err
-	}
-
-	return nil
+	return ioutil.WriteFile(outputFile, out, os.FileMode(int(0666)))
 }

pkg/commands/analyse_rules_test.go

@@ -4,10 +4,11 @@ import (
 	"sort"
 	"testing"
 
-	"github.com/cortexproject/cortex-tools/pkg/analyse"
-	"github.com/cortexproject/cortex-tools/pkg/rules"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/cortexproject/cortex-tools/pkg/analyse"
+	"github.com/cortexproject/cortex-tools/pkg/rules"
 )
 
 var metricsInRuleGroup = []string{

pkg/commands/block_gen.go

@@ -7,7 +7,6 @@ import (
 	"sort"
 	"time"
 
-	"github.com/cortexproject/cortex-tools/pkg/bench"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
@@ -17,6 +16,8 @@ import (
 	"github.com/prometheus/prometheus/tsdb"
 	"gopkg.in/alecthomas/kingpin.v2"
 	"gopkg.in/yaml.v3"
+
+	"github.com/cortexproject/cortex-tools/pkg/bench"
 )
 
 // BlockGenCommand is the kingpin command to generate blocks of mock data.

pkg/commands/bucket_validation.go

@@ -299,7 +299,7 @@ func (b *BucketValidationCommand) deleteTestObjects(ctx context.Context) error {
 			return errors.Wrapf(err, "failed to list objects")
 		}
 		if foundDeletedDir {
-			return errors.Errorf("List returned directory which is supposed to be deleted.")
+			return errors.Errorf("list returned directory which is supposed to be deleted")
 		}
 		expectedDirCount := len(b.objectNames) - iteration
 		if foundDirCount != expectedDirCount {

pkg/commands/chunks.go

@@ -181,7 +181,7 @@ func setup(k *kingpin.ParseContext) error {
 	return nil
 }
 
-func (c *chunkCleanCommandOptions) run(k *kingpin.ParseContext) error {
+func (c *chunkCleanCommandOptions) run(_ *kingpin.ParseContext) error {
 	cortexCfg := &cortex.Config{}
 	flagext.RegisterFlags(cortexCfg)
 	err := LoadConfig(c.CortexConfigFile, true, cortexCfg)

pkg/commands/logger.go

@@ -11,7 +11,7 @@ type LoggerConfig struct {
 	Level string
 }
 
-func (l *LoggerConfig) registerLogLevel(pc *kingpin.ParseContext) error {
+func (l *LoggerConfig) registerLogLevel(_ *kingpin.ParseContext) error {
 	var logLevel logrus.Level
 	switch l.Level {
 	case "debug":

pkg/commands/migrate.go

@@ -23,7 +23,7 @@ func registerMigrateChunksCommandOptions(cmd *kingpin.CmdClause) {
 	migrateChunksCommandOptions.Planner.Register(migrateChunksCommand)
 }
 
-func (c *migrateChunksCommandOptions) run(k *kingpin.ParseContext) error {
+func (c *migrateChunksCommandOptions) run(_ *kingpin.ParseContext) error {
 	f, err := os.Open(c.ConfigFile)
 	if err != nil {
 		return err

pkg/commands/push_gateway.go

@@ -29,7 +29,7 @@ func (l *PushGatewayConfig) Register(app *kingpin.Application) {
 	app.Flag("push-gateway.interval", "interval to forward metrics to the push gateway").Default("1m").DurationVar(&l.Interval)
 }
 
-func (l *PushGatewayConfig) setup(pc *kingpin.ParseContext) error {
+func (l *PushGatewayConfig) setup(_ *kingpin.ParseContext) error {
 	if l.Endpoint == nil || l.JobName == "" {
 		logrus.Debugln("push-gateway not configured")
 		return nil

pkg/commands/rules.go

@@ -567,7 +567,7 @@ func (r *RuleCommand) syncRules(k *kingpin.ParseContext) error {
 
 	err = r.executeChanges(context.Background(), changes)
 	if err != nil {
-		return errors.Wrap(err, "sync operation unsuccessful, unable to complete executing changes.")
+		return errors.Wrap(err, "sync operation unsuccessful, unable to complete executing changes")
 	}
 
 	return nil

pkg/commands/rules_test.go

@@ -3,10 +3,11 @@ package commands
 import (
 	"testing"
 
-	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 	"github.com/prometheus/prometheus/model/rulefmt"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
+
+	"github.com/cortexproject/cortex-tools/pkg/rules/rwrulefmt"
 )
 
 func TestCheckDuplicates(t *testing.T) {