Switch to grafana/regexp everywhere (prometheus#10268)

Let's have a consistent library for regexp.

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

.golangci.yml

@@ -24,13 +24,11 @@ linters-settings:
   depguard:
     list-type: blacklist
     include-go-root: true
-    packages:
-      - sync/atomic
-      - github.com/stretchr/testify/assert
     packages-with-error-message:
       - sync/atomic: "Use go.uber.org/atomic instead of sync/atomic"
       - github.com/stretchr/testify/assert: "Use github.com/stretchr/testify/require instead of github.com/stretchr/testify/assert"
       - github.com/go-kit/kit/log: "Use github.com/go-kit/log instead of github.com/go-kit/kit/log"
+      - regexp: "Use github.com/grafana/regexp instead of regexp"
   errcheck:
     exclude: scripts/errcheck_excludes.txt
   goimports:

cmd/prometheus/main.go

@@ -26,7 +26,6 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
-	"regexp"
 	"runtime"
 	"strings"
 	"sync"
@@ -36,6 +35,7 @@ import (
 	"github.com/alecthomas/units"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	conntrack "github.com/mwitkow/go-conntrack"
 	"github.com/oklog/run"
 	"github.com/pkg/errors"

config/config.go

@@ -19,13 +19,13 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"regexp"
 	"strings"
 	"time"
 
 	"github.com/alecthomas/units"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

config/config_test.go

@@ -19,12 +19,12 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"regexp"
 	"testing"
 	"time"
 
 	"github.com/alecthomas/units"
 	"github.com/go-kit/log"
+	"github.com/grafana/regexp"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"

discovery/file/file.go

@@ -20,14 +20,14 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-	"regexp"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/fsnotify/fsnotify"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/config"

discovery/http/http.go

@@ -21,12 +21,12 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/url"
-	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
 	"github.com/go-kit/log"
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/puppetdb/puppetdb.go

@@ -24,12 +24,12 @@ import (
 	"net/http"
 	"net/url"
 	"path"
-	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
 	"github.com/go-kit/log"
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

model/relabel/relabel.go

@@ -16,9 +16,9 @@ package relabel
 import (
 	"crypto/md5"
 	"fmt"
-	"regexp"
 	"strings"
 
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 

promql/engine.go

@@ -20,7 +20,6 @@ import (
 	"fmt"
 	"math"
 	"reflect"
-	"regexp"
 	"runtime"
 	"sort"
 	"strconv"
@@ -29,6 +28,7 @@ import (
 
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/model"

promql/functions.go

@@ -15,12 +15,12 @@ package promql
 
 import (
 	"math"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
 	"time"
 
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 

promql/query_logger_test.go

@@ -17,9 +17,9 @@ import (
 	"context"
 	"io/ioutil"
 	"os"
-	"regexp"
 	"testing"
 
+	"github.com/grafana/regexp"
 	"github.com/stretchr/testify/require"
 )
 

promql/test.go

@@ -18,11 +18,11 @@ import (
 	"fmt"
 	"io/ioutil"
 	"math"
-	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"

template/template.go

@@ -21,13 +21,13 @@ import (
 	"math"
 	"net"
 	"net/url"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
 	text_template "text/template"
 	"time"
 
+	"github.com/grafana/regexp"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/model"

util/httputil/cors.go

@@ -15,7 +15,8 @@ package httputil
 
 import (
 	"net/http"
-	"regexp"
+
+	"github.com/grafana/regexp"
 )
 
 var corsHeaders = map[string]string{

util/httputil/cors_test.go

@@ -15,9 +15,9 @@ package httputil
 
 import (
 	"net/http"
-	"regexp"
 	"testing"
 
+	"github.com/grafana/regexp"
 	"github.com/stretchr/testify/require"
 )
 

util/logging/file_test.go

@@ -16,10 +16,10 @@ package logging
 import (
 	"io/ioutil"
 	"os"
-	"regexp"
 	"strings"
 	"testing"
 
+	"github.com/grafana/regexp"
 	"github.com/stretchr/testify/require"
 )
 

util/stats/stats_test.go

@@ -15,10 +15,10 @@ package stats
 
 import (
 	"encoding/json"
-	"regexp"
 	"testing"
 	"time"
 
+	"github.com/grafana/regexp"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/stretchr/testify/require"
 

util/strutil/strconv.go

@@ -16,7 +16,8 @@ package strutil
 import (
 	"fmt"
 	"net/url"
-	"regexp"
+
+	"github.com/grafana/regexp"
 )
 
 var invalidLabelCharRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)

web/api/v1/api.go

@@ -23,7 +23,6 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -32,6 +31,7 @@ import (
 
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	jsoniter "github.com/json-iterator/go"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"

web/web.go

@@ -29,7 +29,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"regexp"
 	"runtime"
 	"strconv"
 	"strings"
@@ -39,6 +38,7 @@ import (
 	"github.com/alecthomas/units"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/grafana/regexp"
 	conntrack "github.com/mwitkow/go-conntrack"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"