style: happy linting

if the request has an header `X-Request-ID`, the middleware will extract
  it and use it as uuid on the logs.

.drone.yml

@@ -1,83 +0,0 @@
-kind: pipeline
-name: default
-type: docker
-golang-image: &golang-image golang:1.17-alpine
-gobin-volume: &gobin-volume
-  name: gobin
-  path: /go/bin
-usr-volume: &usr-volume
-  name: usr
-  path: /usr
-deps-command: &deps-command apk add build-base git
-steps:
-- name: tags
-  image: alpine/git
-  commands:
-  - git fetch --tags
-- name: install-deps
-  image: *golang-image
-  volumes:
-  - *gobin-volume
-  - *usr-volume
-  commands:
-  - *deps-command
-- name: lint
-  image: *golang-image
-  volumes:
-  - *gobin-volume
-  - *usr-volume
-  commands:
-  - make lint
-  depends_on:
-  - tags
-  - install-deps
-- name: test
-  image: *golang-image
-  volumes:
-  - *gobin-volume
-  - *usr-volume
-  commands:
-  - make test
-  depends_on:
-  - install-deps
-  - tags
-  - lint
-- name: build
-  image: *golang-image
-  volumes:
-  - *gobin-volume
-  - *usr-volume
-  commands:
-  - make build
-  depends_on:
-  - tags
-  - lint
-  - test
-  - install-deps
-  when:
-    event:
-      exclude:
-      - tag
-- name: release
-  image: *golang-image
-  volumes:
-  - *gobin-volume
-  - *usr-volume
-  environment:
-    GITEA_TOKEN:
-      from_secret: gitea_token
-  commands:
-  - make release
-  depends_on:
-  - test
-  - lint
-  - tags
-  - install-deps
-  when:
-    event:
-    - tag
-volumes:
-- name: gobin
-  temp: {}
-- name: usr
-  temp: {}

.gitignore

@@ -1,2 +1,6 @@
 dist/*
 .envrc
+coverage.out
+report.xml
+.gobin/*
+.cache/*

.woodpecker.yml

@@ -0,0 +1,26 @@
+pipeline:
+  tags:
+    image: alpine/git
+    commands:
+    - git fetch --tags
+  lint:
+    image: golang:1.18
+    commands:
+    - make lint
+  test:
+    image: golang:1.18
+    commands:
+    - make test
+  build:
+    image: golang:1.18
+    commands:
+    - make build
+  release:
+    image: golang:1.18
+    commands:
+    - make release
+    secrets:
+    - gitea_token
+    when:
+      event:
+      - tag

Makefile

@@ -1,10 +1,28 @@
 GO := go
-GORELEASER := $(GO) run github.com/goreleaser/goreleaser@v1.3.1
+
-GOLANGCI_LINT := $(GO) run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.43.0
+ROOT_DIR := $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
+CACHE_DIR := $(ROOT_DIR)/.cache
+
+export GOBIN := $(ROOT_DIR)/.gobin
+export PATH := $(GOBIN):$(PATH)
+
+GORELEASER := $(GO) run github.com/goreleaser/goreleaser@v1.7.0
+GOLANGCI_LINT := $(GO) run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.45.0
+
+GOTESTSUM_URL := gotest.tools/gotestsum@v1.7.0
+GOTESTSUM := $(GO) run $(GOTESTSUM_URL)
 
 .PHONY: test
 test:
-	$(GO) test -count=1 -v ./...
+	$(GOTESTSUM) \
+		--junitfile report.xml \
+		-- \
+		-race \
+		-cover \
+		-coverprofile=coverage.out \
+		-tags=integration \
+		./... \
+		-timeout=120m
 
 .PHONY: lint
 lint:

go.mod

@@ -6,7 +6,8 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/justinas/alice v1.2.0
 	github.com/kr/text v0.2.0 // indirect
-	github.com/rs/zerolog v1.20.0
+	github.com/rs/xid v1.3.0
+	github.com/rs/zerolog v1.26.1
 	github.com/stretchr/testify v1.7.0
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect

go.sum

@@ -1,8 +1,9 @@
-github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/justinas/alice v1.2.0 h1:+MHSA/vccVCF4Uq37S42jwlkvI2Xzl7zTPCN5BnZNVo=
 github.com/justinas/alice v1.2.0/go.mod h1:fN5HRH/reO/zrUflLfTN43t3vXvKzvZIENsNEe7i7qA=
 github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
@@ -11,23 +12,42 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rs/xid v1.2.1 h1:mhH9Nq+C1fY2l1XIpgxIiUOfNpRBYH1kKcr+qfKgjRc=
+github.com/rs/xid v1.3.0 h1:6NjYksEUlhurdVehpc7S7dk6DAmcKv8V9gG0FsVN2U4=
-github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
+github.com/rs/xid v1.3.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
-github.com/rs/zerolog v1.20.0 h1:38k9hgtUBdxFwE34yS8rTHmHBa4eN16E4DJlv177LNs=
+github.com/rs/zerolog v1.26.1 h1:/ihwxqH+4z8UxyI70wM1z9yCvkWcfz/a3mj48k/Zngc=
-github.com/rs/zerolog v1.20.0/go.mod h1:IzD0RJ65iWH0w97OQQebJEvTZYvsCUm9WVLWBQrJRjo=
+github.com/rs/zerolog v1.26.1/go.mod h1:/wSSJWX7lVrsOwlbyTRSOJvqRlc+WjWlfes+CiJ+tmc=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/yuin/goldmark v1.4.0/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.7/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

logginghandler.go

@@ -8,11 +8,21 @@ import (
 	"time"
 
 	"github.com/justinas/alice"
+	"github.com/rs/xid"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/hlog"
 	"github.com/rs/zerolog/log"
 )
 
+const (
+	UUIDKey    = "uuid"
+	UUIDHeader = "X-Request-ID"
+)
+
+func init() { //nolint:gochecknoinits
+	zerolog.DefaultContextLogger = &log.Logger
+}
+
 // GetUUID gets the requests UUID from a request.
 func GetUUID(r *http.Request) (string, bool) {
 	uuid, ok := hlog.IDFromRequest(r)
@@ -23,14 +33,53 @@ func GetUUID(r *http.Request) (string, bool) {
 	return uuid.String(), true
 }
 
-// FromRequest returns a logger with the UUID set from request.
+// FromRequest returns a logger set from request.
-func FromRequest(r *http.Request) zerolog.Logger {
+// If no one could be found, it will return the global one.
-	return *hlog.FromRequest(r)
+func FromRequest(r *http.Request) *zerolog.Logger {
+	return hlog.FromRequest(r)
 }
 
-// FromCtx returns a logger with the UUID set from ctx.
+// FromCtx returns a logger set from ctx.
-func FromCtx(ctx context.Context) zerolog.Logger {
+// If no one could be found, it will return the global one.
-	return *log.Ctx(ctx)
+func FromCtx(ctx context.Context) *zerolog.Logger {
+	return zerolog.Ctx(ctx)
+}
+
+// RequestIDHandler looks in the header for an existing request id. Else it will create one.
+func RequestIDHandler() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			id := r.Header.Get(UUIDHeader)
+
+			if id != "" {
+				ctx := r.Context()
+
+				log := zerolog.Ctx(ctx)
+
+				uuid, err := xid.FromString(id)
+				if err != nil {
+					log.Error().Err(err).Msg("couldnt parse uuid")
+
+					hlog.RequestIDHandler(UUIDKey, UUIDHeader)(next).ServeHTTP(w, r)
+
+					return
+				}
+
+				ctx = hlog.CtxWithID(ctx, uuid)
+				r = r.WithContext(ctx)
+
+				log.UpdateContext(func(c zerolog.Context) zerolog.Context {
+					return c.Str(UUIDKey, uuid.String())
+				})
+
+				w.Header().Set(UUIDHeader, uuid.String())
+
+				next.ServeHTTP(w, r)
+			} else {
+				hlog.RequestIDHandler(UUIDKey, UUIDHeader)(next).ServeHTTP(w, r)
+			}
+		})
+	}
 }
 
 func Handler(log zerolog.Logger) func(http.Handler) http.Handler {
@@ -50,7 +99,7 @@ func Handler(log zerolog.Logger) func(http.Handler) http.Handler {
 			hlog.RemoteAddrHandler("remote"),
 			hlog.UserAgentHandler("user-agent"),
 			hlog.RefererHandler("referer"),
-			hlog.RequestIDHandler("uuid", "X-Request-ID"),
+			RequestIDHandler(),
 		).Then(next)
 
 		return chain

logginghandler_test.go

@@ -1,15 +1,18 @@
+//nolint:funlen
 package logginghandler_test
 
 import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 
 	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/hlog"
 	"github.com/rs/zerolog/log"
 	"github.com/stretchr/testify/require"
 	"go.xsfx.dev/logginghandler"
@@ -18,13 +21,17 @@ import (
 func Example() {
 	logger := log.With().Logger()
 
-	handler := logginghandler.Handler(logger)(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := logginghandler.Handler(
+		logger,
+	)(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			logger := logginghandler.FromRequest(r)
 
 			logger.Info().Msg("this is a request")
 
 			w.WriteHeader(http.StatusOK)
-	}))
+		}),
+	)
 
 	http.Handle("/", handler)
 	log.Fatal().Msg(http.ListenAndServe(":5000", nil).Error())
@@ -45,7 +52,7 @@ func TestUUID(t *testing.T) {
 
 	handler.ServeHTTP(rr, req)
 
-	assert.NotEmpty(rr.Header().Get("X-Request-ID"))
+	assert.NotEmpty(rr.Header().Get(logginghandler.UUIDHeader))
 }
 
 func TestFromCtx(t *testing.T) {
@@ -58,10 +65,14 @@ func TestFromCtx(t *testing.T) {
 	var output bytes.Buffer
 
 	rr := httptest.NewRecorder()
-	handler := logginghandler.Handler(zerolog.New(&output))(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := logginghandler.Handler(
+		zerolog.New(&output),
+	)(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			log := logginghandler.FromCtx(r.Context())
 			log.Info().Msg("hello world")
-	}))
+		}),
+	)
 
 	handler.ServeHTTP(rr, req)
 
@@ -75,3 +86,69 @@ func TestFromCtx(t *testing.T) {
 
 	assert.NotEmpty(jOut)
 }
+
+func TestRequestIDHandler(t *testing.T) {
+	t.Parallel()
+	assert := require.New(t)
+
+	handler := logginghandler.RequestIDHandler()(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			log := hlog.FromRequest(r)
+			log.Info().Msg("hello from TestRequestID")
+		}),
+	)
+
+	id := "cfrj1ro330reqgvfpgu0"
+
+	// Create buffer to store output.
+	var output bytes.Buffer
+
+	req, err := http.NewRequestWithContext(context.Background(), "GET", "/", nil)
+	assert.NoError(err)
+
+	rr := httptest.NewRecorder()
+
+	h := hlog.NewHandler(zerolog.New(&output))(handler)
+
+	h.ServeHTTP(rr, req)
+
+	assert.NotEmpty(rr.Header().Get(logginghandler.UUIDHeader))
+	assert.NotEqual(rr.Header().Get(logginghandler.UUIDHeader), id)
+
+	// Now test with request id in header.
+
+	nr := httptest.NewRecorder()
+
+	nReq, err := http.NewRequestWithContext(context.Background(), "GET", "/", nil)
+	assert.NoError(err)
+
+	nReq.Header.Add(logginghandler.UUIDHeader, id)
+
+	h.ServeHTTP(nr, nReq)
+
+	assert.NotEmpty(nr.Header().Get(logginghandler.UUIDHeader))
+	assert.Equal(nr.Header().Get(logginghandler.UUIDHeader), id)
+
+	logs := strings.Split(output.String(), "\n")
+	assert.Len(logs, 3)
+
+	getUUID := func(l string) (string, error) {
+		var out struct{ UUID string }
+
+		err := json.Unmarshal([]byte(l), &out)
+		if err != nil {
+			return "", fmt.Errorf("failed to unmarshal log: %w", err)
+		}
+
+		return out.UUID, nil
+	}
+
+	uuid1, err := getUUID(logs[0])
+	assert.NoError(err)
+
+	assert.NotEqual(id, uuid1)
+
+	uuid2, err := getUUID(logs[1])
+	assert.NoError(err)
+	assert.Equal(id, uuid2)
+}

vendor/github.com/rs/xid/README.md

@@ -2,9 +2,9 @@
 
 [![godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/rs/xid) [![license](http://img.shields.io/badge/license-MIT-red.svg?style=flat)](https://raw.githubusercontent.com/rs/xid/master/LICENSE) [![Build Status](https://travis-ci.org/rs/xid.svg?branch=master)](https://travis-ci.org/rs/xid) [![Coverage](http://gocover.io/_badge/github.com/rs/xid)](http://gocover.io/github.com/rs/xid)
 
-Package xid is a globally unique id generator library, ready to be used safely directly in your server code.
+Package xid is a globally unique id generator library, ready to safely be used directly in your server code.
 
-Xid is using Mongo Object ID algorithm to generate globally unique ids with a different serialization (base64) to make it shorter when transported as a string:
+Xid uses the Mongo Object ID algorithm to generate globally unique ids with a different serialization (base64) to make it shorter when transported as a string:
 https://docs.mongodb.org/manual/reference/object-id/
 
 - 4-byte value representing the seconds since the Unix epoch,
@@ -33,7 +33,7 @@ is required so it can be used directly in server's code.
 |-------------|-------------|----------------|----------------
 | [UUID]      | 16 bytes    | 36 chars       | configuration free, not sortable
 | [shortuuid] | 16 bytes    | 22 chars       | configuration free, not sortable
-| [Snowflake] | 8 bytes     | up to 20 chars | needs machin/DC configuration, needs central server, sortable
+| [Snowflake] | 8 bytes     | up to 20 chars | needs machine/DC configuration, needs central server, sortable
 | [MongoID]   | 12 bytes    | 24 chars       | configuration free, sortable
 | xid         | 12 bytes    | 20 chars       | configuration free, sortable
 
@@ -57,7 +57,7 @@ Best used with [zerolog](https://github.com/rs/zerolog)'s
 
 Notes:
 
-- Xid is dependent on the system time, a monotonic counter and so is not cryptographically secure. If unpredictability of IDs is important, you should not use Xids. It is worth noting that most of the other UUID like implementations are also not cryptographically secure. You shoud use libraries that rely on cryptographically secure sources (like /dev/urandom on unix, crypto/rand in golang), if you want a truly random ID generator.
+- Xid is dependent on the system time, a monotonic counter and so is not cryptographically secure. If unpredictability of IDs is important, you should not use Xids. It is worth noting that most other UUID-like implementations are also not cryptographically secure. You should use libraries that rely on cryptographically secure sources (like /dev/urandom on unix, crypto/rand in golang), if you want a truly random ID generator.
 
 References:
 
@@ -66,6 +66,9 @@ References:
 - https://blog.twitter.com/2010/announcing-snowflake
 - Python port by [Graham Abbott](https://github.com/graham): https://github.com/graham/python_xid
 - Scala port by [Egor Kolotaev](https://github.com/kolotaev): https://github.com/kolotaev/ride
+- Rust port by [Jérôme Renard](https://github.com/jeromer/): https://github.com/jeromer/libxid
+- Ruby port by [Valar](https://github.com/valarpirai/): https://github.com/valarpirai/ruby_xid
+- Java port by [0xShamil](https://github.com/0xShamil/): https://github.com/0xShamil/java-xid
 
 ## Install
 
@@ -105,7 +108,7 @@ BenchmarkUUIDv4-2   	 1000000	      1427 ns/op	      64 B/op	       2 allocs/op
 BenchmarkUUIDv4-4   	 1000000	      1452 ns/op	      64 B/op	       2 allocs/op
 ```
 
-Note: UUIDv1 requires a global lock, hence the performence degrading as we add more CPUs.
+Note: UUIDv1 requires a global lock, hence the performance degradation as we add more CPUs.
 
 ## Licenses
 

vendor/github.com/rs/xid/go.mod

@@ -1 +1,3 @@
 module github.com/rs/xid
+
+go 1.12

vendor/github.com/rs/xid/hostid_linux.go

@@ -5,6 +5,9 @@ package xid
 import "io/ioutil"
 
 func readPlatformMachineID() (string, error) {
-	b, err := ioutil.ReadFile("/sys/class/dmi/id/product_uuid")
+	b, err := ioutil.ReadFile("/etc/machine-id")
+	if err != nil || len(b) == 0 {
+		b, err = ioutil.ReadFile("/sys/class/dmi/id/product_uuid")
+	}
 	return string(b), err
 }

vendor/github.com/rs/xid/id.go

@@ -55,6 +55,7 @@ import (
 	"sort"
 	"sync/atomic"
 	"time"
+	"unsafe"
 )
 
 // Code inspired from mgo/bson ObjectId
@@ -177,7 +178,13 @@ func FromString(id string) (ID, error) {
 func (id ID) String() string {
 	text := make([]byte, encodedLen)
 	encode(text, id[:])
-	return string(text)
+	return *(*string)(unsafe.Pointer(&text))
+}
+
+// Encode encodes the id using base32 encoding, writing 20 bytes to dst and return it.
+func (id ID) Encode(dst []byte) []byte {
+	encode(dst, id[:])
+	return dst
 }
 
 // MarshalText implements encoding/text TextMarshaler interface
@@ -192,32 +199,37 @@ func (id ID) MarshalJSON() ([]byte, error) {
 	if id.IsNil() {
 		return []byte("null"), nil
 	}
-	text, err := id.MarshalText()
+	text := make([]byte, encodedLen+2)
-	return []byte(`"` + string(text) + `"`), err
+	encode(text[1:encodedLen+1], id[:])
+	text[0], text[encodedLen+1] = '"', '"'
+	return text, nil
 }
 
 // encode by unrolling the stdlib base32 algorithm + removing all safe checks
 func encode(dst, id []byte) {
-	dst[0] = encoding[id[0]>>3]
+	_ = dst[19]
-	dst[1] = encoding[(id[1]>>6)&0x1F|(id[0]<<2)&0x1F]
+	_ = id[11]
-	dst[2] = encoding[(id[1]>>1)&0x1F]
+
-	dst[3] = encoding[(id[2]>>4)&0x1F|(id[1]<<4)&0x1F]
-	dst[4] = encoding[id[3]>>7|(id[2]<<1)&0x1F]
-	dst[5] = encoding[(id[3]>>2)&0x1F]
-	dst[6] = encoding[id[4]>>5|(id[3]<<3)&0x1F]
-	dst[7] = encoding[id[4]&0x1F]
-	dst[8] = encoding[id[5]>>3]
-	dst[9] = encoding[(id[6]>>6)&0x1F|(id[5]<<2)&0x1F]
-	dst[10] = encoding[(id[6]>>1)&0x1F]
-	dst[11] = encoding[(id[7]>>4)&0x1F|(id[6]<<4)&0x1F]
-	dst[12] = encoding[id[8]>>7|(id[7]<<1)&0x1F]
-	dst[13] = encoding[(id[8]>>2)&0x1F]
-	dst[14] = encoding[(id[9]>>5)|(id[8]<<3)&0x1F]
-	dst[15] = encoding[id[9]&0x1F]
-	dst[16] = encoding[id[10]>>3]
-	dst[17] = encoding[(id[11]>>6)&0x1F|(id[10]<<2)&0x1F]
-	dst[18] = encoding[(id[11]>>1)&0x1F]
 	dst[19] = encoding[(id[11]<<4)&0x1F]
+	dst[18] = encoding[(id[11]>>1)&0x1F]
+	dst[17] = encoding[(id[11]>>6)&0x1F|(id[10]<<2)&0x1F]
+	dst[16] = encoding[id[10]>>3]
+	dst[15] = encoding[id[9]&0x1F]
+	dst[14] = encoding[(id[9]>>5)|(id[8]<<3)&0x1F]
+	dst[13] = encoding[(id[8]>>2)&0x1F]
+	dst[12] = encoding[id[8]>>7|(id[7]<<1)&0x1F]
+	dst[11] = encoding[(id[7]>>4)&0x1F|(id[6]<<4)&0x1F]
+	dst[10] = encoding[(id[6]>>1)&0x1F]
+	dst[9] = encoding[(id[6]>>6)&0x1F|(id[5]<<2)&0x1F]
+	dst[8] = encoding[id[5]>>3]
+	dst[7] = encoding[id[4]&0x1F]
+	dst[6] = encoding[id[4]>>5|(id[3]<<3)&0x1F]
+	dst[5] = encoding[(id[3]>>2)&0x1F]
+	dst[4] = encoding[id[3]>>7|(id[2]<<1)&0x1F]
+	dst[3] = encoding[(id[2]>>4)&0x1F|(id[1]<<4)&0x1F]
+	dst[2] = encoding[(id[1]>>1)&0x1F]
+	dst[1] = encoding[(id[1]>>6)&0x1F|(id[0]<<2)&0x1F]
+	dst[0] = encoding[id[0]>>3]
 }
 
 // UnmarshalText implements encoding/text TextUnmarshaler interface
@@ -246,18 +258,21 @@ func (id *ID) UnmarshalJSON(b []byte) error {
 
 // decode by unrolling the stdlib base32 algorithm + removing all safe checks
 func decode(id *ID, src []byte) {
-	id[0] = dec[src[0]]<<3 | dec[src[1]]>>2
+	_ = src[19]
-	id[1] = dec[src[1]]<<6 | dec[src[2]]<<1 | dec[src[3]]>>4
+	_ = id[11]
-	id[2] = dec[src[3]]<<4 | dec[src[4]]>>1
+
-	id[3] = dec[src[4]]<<7 | dec[src[5]]<<2 | dec[src[6]]>>3
-	id[4] = dec[src[6]]<<5 | dec[src[7]]
-	id[5] = dec[src[8]]<<3 | dec[src[9]]>>2
-	id[6] = dec[src[9]]<<6 | dec[src[10]]<<1 | dec[src[11]]>>4
-	id[7] = dec[src[11]]<<4 | dec[src[12]]>>1
-	id[8] = dec[src[12]]<<7 | dec[src[13]]<<2 | dec[src[14]]>>3
-	id[9] = dec[src[14]]<<5 | dec[src[15]]
-	id[10] = dec[src[16]]<<3 | dec[src[17]]>>2
 	id[11] = dec[src[17]]<<6 | dec[src[18]]<<1 | dec[src[19]]>>4
+	id[10] = dec[src[16]]<<3 | dec[src[17]]>>2
+	id[9] = dec[src[14]]<<5 | dec[src[15]]
+	id[8] = dec[src[12]]<<7 | dec[src[13]]<<2 | dec[src[14]]>>3
+	id[7] = dec[src[11]]<<4 | dec[src[12]]>>1
+	id[6] = dec[src[9]]<<6 | dec[src[10]]<<1 | dec[src[11]]>>4
+	id[5] = dec[src[8]]<<3 | dec[src[9]]>>2
+	id[4] = dec[src[6]]<<5 | dec[src[7]]
+	id[3] = dec[src[4]]<<7 | dec[src[5]]<<2 | dec[src[6]]>>3
+	id[2] = dec[src[3]]<<4 | dec[src[4]]>>1
+	id[1] = dec[src[1]]<<6 | dec[src[2]]<<1 | dec[src[3]]>>4
+	id[0] = dec[src[0]]<<3 | dec[src[1]]>>2
 }
 
 // Time returns the timestamp part of the id.

vendor/github.com/rs/zerolog/.travis.yml

@@ -1,15 +0,0 @@
-language: go
-go:
-- "1.7"
-- "1.8"
-- "1.9"
-- "1.10"
-- "1.11"
-- "1.12"
-- "master"
-matrix:
-  allow_failures:
-      - go: "master"
-script:
-  - go test -v -race -cpu=1,2,4 -bench . -benchmem ./...
-  - go test -v -tags binary_log -race -cpu=1,2,4 -bench . -benchmem ./...

vendor/github.com/rs/zerolog/README.md

@@ -18,16 +18,17 @@ Find out [who uses zerolog](https://github.com/rs/zerolog/wiki/Who-uses-zerolog)
 
 ## Features
 
-* Blazing fast
+* [Blazing fast](#benchmarks)
-* Low to zero allocation
+* [Low to zero allocation](#benchmarks)
-* Level logging
+* [Leveled logging](#leveled-logging)
-* Sampling
+* [Sampling](#log-sampling)
-* Hooks
+* [Hooks](#hooks)
-* Contextual fields
+* [Contextual fields](#contextual-logging)
 * `context.Context` integration
-* `net/http` helpers
+* [Integration with `net/http`](#integration-with-nethttp)
-* JSON and CBOR encoding formats
+* [JSON and CBOR encoding formats](#binary-encoding)
-* Pretty logging for development
+* [Pretty logging for development](#pretty-logging)
+* [Error Logging (with optional Stacktrace)](#error-logging)
 
 ## Installation
 
@@ -51,8 +52,6 @@ import (
 
 func main() {
     // UNIX Time is faster and smaller than most timestamps
-    // If you set zerolog.TimeFieldFormat to an empty string,
-    // logs will write with UNIX time
     zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
 
     log.Print("hello world")
@@ -205,6 +204,80 @@ func main() {
 // Output: {"time":1494567715,"foo":"bar"}
 ```
 
+### Error Logging
+
+You can log errors using the `Err` method
+
+```go
+package main
+
+import (
+	"errors"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func main() {
+	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
+
+	err := errors.New("seems we have an error here")
+	log.Error().Err(err).Msg("")
+}
+
+// Output: {"level":"error","error":"seems we have an error here","time":1609085256}
+```
+
+> The default field name for errors is `error`, you can change this by setting `zerolog.ErrorFieldName` to meet your needs.
+
+#### Error Logging with Stacktrace
+
+Using `github.com/pkg/errors`, you can add a formatted stacktrace to your errors. 
+
+```go
+package main
+
+import (
+	"github.com/pkg/errors"
+	"github.com/rs/zerolog/pkgerrors"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func main() {
+	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
+	zerolog.ErrorStackMarshaler = pkgerrors.MarshalStack
+
+	err := outer()
+	log.Error().Stack().Err(err).Msg("")
+}
+
+func inner() error {
+	return errors.New("seems we have an error here")
+}
+
+func middle() error {
+	err := inner()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func outer() error {
+	err := middle()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// Output: {"level":"error","stack":[{"func":"inner","line":"20","source":"errors.go"},{"func":"middle","line":"24","source":"errors.go"},{"func":"outer","line":"32","source":"errors.go"},{"func":"main","line":"15","source":"errors.go"},{"func":"main","line":"204","source":"proc.go"},{"func":"goexit","line":"1374","source":"asm_amd64.s"}],"error":"seems we have an error here","time":1609086683}
+```
+
+> zerolog.ErrorStackMarshaler must be set in order for the stack to output anything.
+
 #### Logging Fatal Messages
 
 ```go
@@ -235,6 +308,7 @@ func main() {
 
 > NOTE: Using `Msgf` generates one allocation even when the logger is disabled.
 
+
 ### Create logger instance to manage different outputs
 
 ```go
@@ -517,6 +591,7 @@ Some settings can be changed and will by applied to all loggers:
 ### Advanced Fields
 
 * `Err`: Takes an `error` and renders it as a string using the `zerolog.ErrorFieldName` field name.
+* `Func`: Run a `func` only if the level is enabled.
 * `Timestamp`: Inserts a timestamp field with `zerolog.TimestampFieldName` field name, formatted using `zerolog.TimeFieldFormat`.
 * `Time`: Adds a field with time formatted with `zerolog.TimeFieldFormat`.
 * `Dur`: Adds a field with `time.Duration`.
@@ -541,6 +616,8 @@ with zerolog library is [CSD](https://github.com/toravir/csd/).
 ## Related Projects
 
 * [grpc-zerolog](https://github.com/cheapRoc/grpc-zerolog): Implementation of `grpclog.LoggerV2` interface using `zerolog`
+* [overlog](https://github.com/Trendyol/overlog): Implementation of `Mapped Diagnostic Context` interface using `zerolog`
+* [zerologr](https://github.com/go-logr/zerologr): Implementation of `logr.LogSink` interface using `zerolog`
 
 ## Benchmarks
 

vendor/github.com/rs/zerolog/array.go

@@ -231,3 +231,10 @@ func (a *Array) MACAddr(ha net.HardwareAddr) *Array {
 	a.buf = enc.AppendMACAddr(enc.AppendArrayDelim(a.buf), ha)
 	return a
 }
+
+// Dict adds the dict Event to the array
+func (a *Array) Dict(dict *Event) *Array {
+	dict.buf = enc.AppendEndMarker(dict.buf)
+	a.buf = append(enc.AppendArrayDelim(a.buf), dict.buf...)
+	return a
+}

vendor/github.com/rs/zerolog/console.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
@@ -57,6 +58,9 @@ type ConsoleWriter struct {
 	// PartsOrder defines the order of parts in output.
 	PartsOrder []string
 
+	// PartsExclude defines parts to not display in output.
+	PartsExclude []string
+
 	FormatTimestamp     Formatter
 	FormatLevel         Formatter
 	FormatCaller        Formatter
@@ -208,6 +212,14 @@ func (w ConsoleWriter) writeFields(evt map[string]interface{}, buf *bytes.Buffer
 func (w ConsoleWriter) writePart(buf *bytes.Buffer, evt map[string]interface{}, p string) {
 	var f Formatter
 
+	if w.PartsExclude != nil && len(w.PartsExclude) > 0 {
+		for _, exclude := range w.PartsExclude {
+			if exclude == p {
+				return
+			}
+		}
+	}
+
 	switch p {
 	case LevelFieldName:
 		if w.FormatLevel == nil {
@@ -321,19 +333,19 @@ func consoleDefaultFormatLevel(noColor bool) Formatter {
 		var l string
 		if ll, ok := i.(string); ok {
 			switch ll {
-			case "trace":
+			case LevelTraceValue:
 				l = colorize("TRC", colorMagenta, noColor)
-			case "debug":
+			case LevelDebugValue:
 				l = colorize("DBG", colorYellow, noColor)
-			case "info":
+			case LevelInfoValue:
 				l = colorize("INF", colorGreen, noColor)
-			case "warn":
+			case LevelWarnValue:
 				l = colorize("WRN", colorRed, noColor)
-			case "error":
+			case LevelErrorValue:
 				l = colorize(colorize("ERR", colorRed, noColor), colorBold, noColor)
-			case "fatal":
+			case LevelFatalValue:
 				l = colorize(colorize("FTL", colorRed, noColor), colorBold, noColor)
-			case "panic":
+			case LevelPanicValue:
 				l = colorize(colorize("PNC", colorRed, noColor), colorBold, noColor)
 			default:
 				l = colorize("???", colorBold, noColor)
@@ -356,10 +368,10 @@ func consoleDefaultFormatCaller(noColor bool) Formatter {
 			c = cc
 		}
 		if len(c) > 0 {
-			cwd, err := os.Getwd()
+			if cwd, err := os.Getwd(); err == nil {
-			if err == nil {
+				if rel, err := filepath.Rel(cwd, c); err == nil {
-				c = strings.TrimPrefix(c, cwd)
+					c = rel
-				c = strings.TrimPrefix(c, "/")
+				}
 			}
 			c = colorize(c, colorBold, noColor) + colorize(" >", colorCyan, noColor)
 		}
@@ -386,7 +398,7 @@ func consoleDefaultFormatFieldValue(i interface{}) string {
 
 func consoleDefaultFormatErrFieldName(noColor bool) Formatter {
 	return func(i interface{}) string {
-		return colorize(fmt.Sprintf("%s=", i), colorRed, noColor)
+		return colorize(fmt.Sprintf("%s=", i), colorCyan, noColor)
 	}
 }
 

vendor/github.com/rs/zerolog/context.go

@@ -18,8 +18,10 @@ func (c Context) Logger() Logger {
 	return c.l
 }
 
-// Fields is a helper function to use a map to set fields using type assertion.
+// Fields is a helper function to use a map or slice to set fields using type assertion.
-func (c Context) Fields(fields map[string]interface{}) Context {
+// Only map[string]interface{} and []interface{} are accepted. []interface{} must
+// alternate string keys and arbitrary values, and extraneous ones are ignored.
+func (c Context) Fields(fields interface{}) Context {
 	c.l.context = appendFields(c.l.context, fields)
 	return c
 }
@@ -406,17 +408,9 @@ func (c Context) CallerWithSkipFrameCount(skipFrameCount int) Context {
 	return c
 }
 
-type stackTraceHook struct{}
-
-func (sh stackTraceHook) Run(e *Event, level Level, msg string) {
-	e.Stack()
-}
-
-var sh = stackTraceHook{}
-
 // Stack enables stack trace printing for the error passed to Err().
 func (c Context) Stack() Context {
-	c.l = c.l.Hook(sh)
+	c.l.stack = true
 	return c
 }
 

vendor/github.com/rs/zerolog/ctx.go

@@ -39,10 +39,13 @@ func (l *Logger) WithContext(ctx context.Context) context.Context {
 }
 
 // Ctx returns the Logger associated with the ctx. If no logger
-// is associated, a disabled logger is returned.
+// is associated, DefaultContextLogger is returned, unless DefaultContextLogger
+// is nil, in which case a disabled logger is returned.
 func Ctx(ctx context.Context) *Logger {
 	if l, ok := ctx.Value(ctxKey{}).(*Logger); ok {
 		return l
+	} else if l = DefaultContextLogger; l != nil {
+		return l
 	}
 	return disabledLogger
 }

vendor/github.com/rs/zerolog/encoder_cbor.go

@@ -14,6 +14,13 @@ var (
 	enc = cbor.Encoder{}
 )
 
+func init() {
+	// using closure to reflect the changes at runtime.
+	cbor.JSONMarshalFunc = func(v interface{}) ([]byte, error) {
+		return InterfaceMarshalFunc(v)
+	}
+}
+
 func appendJSON(dst []byte, j []byte) []byte {
 	return cbor.AppendEmbeddedJSON(dst, j)
 }

vendor/github.com/rs/zerolog/encoder_json.go

@@ -15,6 +15,13 @@ var (
 	enc = json.Encoder{}
 )
 
+func init() {
+	// using closure to reflect the changes at runtime.
+	json.JSONMarshalFunc = func(v interface{}) ([]byte, error) {
+		return InterfaceMarshalFunc(v)
+	}
+}
+
 func appendJSON(dst []byte, j []byte) []byte {
 	return append(dst, j...)
 }

vendor/github.com/rs/zerolog/event.go

@@ -26,6 +26,7 @@ type Event struct {
 	done      func(msg string)
 	stack     bool   // enable error stack trace
 	ch        []Hook // hooks from context
+	skipFrame int    // The number of additional frames to skip when printing the caller.
 }
 
 func putEvent(e *Event) {
@@ -62,6 +63,7 @@ func newEvent(w LevelWriter, level Level) *Event {
 	e.w = w
 	e.level = level
 	e.stack = false
+	e.skipFrame = 0
 	return e
 }
 
@@ -146,8 +148,10 @@ func (e *Event) msg(msg string) {
 	}
 }
 
-// Fields is a helper function to use a map to set fields using type assertion.
+// Fields is a helper function to use a map or slice to set fields using type assertion.
-func (e *Event) Fields(fields map[string]interface{}) *Event {
+// Only map[string]interface{} and []interface{} are accepted. []interface{} must
+// alternate string keys and arbitrary values, and extraneous ones are ignored.
+func (e *Event) Fields(fields interface{}) *Event {
 	if e == nil {
 		return e
 	}
@@ -205,15 +209,32 @@ func (e *Event) Object(key string, obj LogObjectMarshaler) *Event {
 		return e
 	}
 	e.buf = enc.AppendKey(e.buf, key)
+	if obj == nil {
+		e.buf = enc.AppendNil(e.buf)
+
+		return e
+	}
+
 	e.appendObject(obj)
 	return e
 }
 
+// Func allows an anonymous func to run only if the event is enabled.
+func (e *Event) Func(f func(e *Event)) *Event {
+	if e != nil && e.Enabled() {
+		f(e)
+	}
+	return e
+}
+
 // EmbedObject marshals an object that implement the LogObjectMarshaler interface.
 func (e *Event) EmbedObject(obj LogObjectMarshaler) *Event {
 	if e == nil {
 		return e
 	}
+	if obj == nil {
+		return e
+	}
 	obj.MarshalZerologObject(e)
 	return e
 }
@@ -236,18 +257,24 @@ func (e *Event) Strs(key string, vals []string) *Event {
 	return e
 }
 
-// Stringer adds the field key with val.String() (or null if val is nil) to the *Event context.
+// Stringer adds the field key with val.String() (or null if val is nil)
+// to the *Event context.
 func (e *Event) Stringer(key string, val fmt.Stringer) *Event {
 	if e == nil {
 		return e
 	}
+	e.buf = enc.AppendStringer(enc.AppendKey(e.buf, key), val)
+	return e
+}
 
-	if val != nil {
+// Stringers adds the field key with vals where each individual val
-		e.buf = enc.AppendString(enc.AppendKey(e.buf, key), val.String())
+// is used as val.String() (or null if val is empty) to the *Event
+// context.
+func (e *Event) Stringers(key string, vals []fmt.Stringer) *Event {
+	if e == nil {
 		return e
 	}
-
+	e.buf = enc.AppendStringers(enc.AppendKey(e.buf, key), vals)
-	e.buf = enc.AppendInterface(enc.AppendKey(e.buf, key), nil)
 	return e
 }
 
@@ -685,6 +712,16 @@ func (e *Event) Interface(key string, i interface{}) *Event {
 	return e
 }
 
+// CallerSkipFrame instructs any future Caller calls to skip the specified number of frames.
+// This includes those added via hooks from the context.
+func (e *Event) CallerSkipFrame(skip int) *Event {
+	if e == nil {
+		return e
+	}
+	e.skipFrame += skip
+	return e
+}
+
 // Caller adds the file:line of the caller with the zerolog.CallerFieldName key.
 // The argument skip is the number of stack frames to ascend
 // Skip If not passed, use the global variable CallerSkipFrameCount
@@ -700,7 +737,7 @@ func (e *Event) caller(skip int) *Event {
 	if e == nil {
 		return e
 	}
-	_, file, line, ok := runtime.Caller(skip)
+	_, file, line, ok := runtime.Caller(skip + e.skipFrame)
 	if !ok {
 		return e
 	}

vendor/github.com/rs/zerolog/fields.go

@@ -1,6 +1,7 @@
 package zerolog
 
 import (
+	"encoding/json"
 	"net"
 	"sort"
 	"time"
@@ -11,15 +12,36 @@ func isNilValue(i interface{}) bool {
 	return (*[2]uintptr)(unsafe.Pointer(&i))[1] == 0
 }
 
-func appendFields(dst []byte, fields map[string]interface{}) []byte {
+func appendFields(dst []byte, fields interface{}) []byte {
+	switch fields := fields.(type) {
+	case []interface{}:
+		if n := len(fields); n&0x1 == 1 { // odd number
+			fields = fields[:n-1]
+		}
+		dst = appendFieldList(dst, fields)
+	case map[string]interface{}:
 		keys := make([]string, 0, len(fields))
 		for key := range fields {
 			keys = append(keys, key)
 		}
 		sort.Strings(keys)
+		kv := make([]interface{}, 2)
 		for _, key := range keys {
+			kv[0], kv[1] = key, fields[key]
+			dst = appendFieldList(dst, kv)
+		}
+	}
+	return dst
+}
+
+func appendFieldList(dst []byte, kvList []interface{}) []byte {
+	for i, n := 0, len(kvList); i < n; i += 2 {
+		key, val := kvList[i], kvList[i+1]
+		if key, ok := key.(string); ok {
 			dst = enc.AppendKey(dst, key)
-		val := fields[key]
+		} else {
+			continue
+		}
 		if val, ok := val.(LogObjectMarshaler); ok {
 			e := newEvent(nil, 0)
 			e.buf = e.buf[:0]
@@ -245,6 +267,8 @@ func appendFields(dst []byte, fields map[string]interface{}) []byte {
 			dst = enc.AppendIPPrefix(dst, val)
 		case net.HardwareAddr:
 			dst = enc.AppendMACAddr(dst, val)
+		case json.RawMessage:
+			dst = appendJSON(dst, val)
 		default:
 			dst = enc.AppendInterface(dst, val)
 		}

vendor/github.com/rs/zerolog/globals.go

@@ -1,6 +1,7 @@
 package zerolog
 
 import (
+	"encoding/json"
 	"strconv"
 	"sync/atomic"
 	"time"
@@ -27,7 +28,22 @@ var (
 	// LevelFieldName is the field name used for the level field.
 	LevelFieldName = "level"
 
-	// LevelFieldMarshalFunc allows customization of global level field marshaling
+	// LevelTraceValue is the value used for the trace level field.
+	LevelTraceValue = "trace"
+	// LevelDebugValue is the value used for the debug level field.
+	LevelDebugValue = "debug"
+	// LevelInfoValue is the value used for the info level field.
+	LevelInfoValue = "info"
+	// LevelWarnValue is the value used for the warn level field.
+	LevelWarnValue = "warn"
+	// LevelErrorValue is the value used for the error level field.
+	LevelErrorValue = "error"
+	// LevelFatalValue is the value used for the fatal level field.
+	LevelFatalValue = "fatal"
+	// LevelPanicValue is the value used for the panic level field.
+	LevelPanicValue = "panic"
+
+	// LevelFieldMarshalFunc allows customization of global level field marshaling.
 	LevelFieldMarshalFunc = func(l Level) string {
 		return l.String()
 	}
@@ -60,6 +76,10 @@ var (
 		return err
 	}
 
+	// InterfaceMarshalFunc allows customization of interface marshaling.
+	// Default: "encoding/json.Marshal"
+	InterfaceMarshalFunc = json.Marshal
+
 	// TimeFieldFormat defines the time format of the Time field type. If set to
 	// TimeFormatUnix, TimeFormatUnixMs or TimeFormatUnixMicro, the time is formatted as an UNIX
 	// timestamp as integer.
@@ -80,6 +100,10 @@ var (
 	// output. If not set, an error is printed on the stderr. This handler must
 	// be thread safe and non-blocking.
 	ErrorHandler func(err error)
+
+	// DefaultContextLogger is returned from Ctx() if there is no logger associated
+	// with the context.
+	DefaultContextLogger *Logger
 )
 
 var (

vendor/github.com/rs/zerolog/go.mod

@@ -1,8 +1,11 @@
 module github.com/rs/zerolog
 
+go 1.15
+
 require (
-	github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e
+	github.com/coreos/go-systemd/v22 v22.3.2
-	github.com/pkg/errors v0.8.1
+	github.com/pkg/errors v0.9.1
-	github.com/rs/xid v1.2.1
+	github.com/rs/xid v1.3.0
-	golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74
+	golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e // indirect
+	golang.org/x/tools v0.1.7
 )

vendor/github.com/rs/zerolog/go.sum

@@ -1,14 +1,37 @@
-github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9/ZjdUKyjop4mf3Qdd+1TvvltAvM3m8=
+github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI=
-github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/rs/xid v1.2.1 h1:mhH9Nq+C1fY2l1XIpgxIiUOfNpRBYH1kKcr+qfKgjRc=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
+github.com/rs/xid v1.3.0 h1:6NjYksEUlhurdVehpc7S7dk6DAmcKv8V9gG0FsVN2U4=
+github.com/rs/xid v1.3.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
+github.com/yuin/goldmark v1.4.0/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
+golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e h1:WUoyKPm6nCo1BnNUvPGnFG3T5DUVem42yDJZZ4CNxMA=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74 h1:4cFkmztxtMslUX2SctSl+blCyXfpzhGOy9LhKAqSMA4=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.7 h1:6j8CgantCy3yc8JGBqkDLMKWqZ0RDU2g1HVgacojGWQ=
+golang.org/x/tools v0.1.7/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

vendor/github.com/rs/zerolog/hlog/hlog.go

@@ -3,7 +3,6 @@ package hlog
 
 import (
 	"context"
-	"net"
 	"net/http"
 	"time"
 
@@ -79,10 +78,10 @@ func RequestHandler(fieldKey string) func(next http.Handler) http.Handler {
 func RemoteAddrHandler(fieldKey string) func(next http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			if host, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
+			if r.RemoteAddr != "" {
 				log := zerolog.Ctx(r.Context())
 				log.UpdateContext(func(c zerolog.Context) zerolog.Context {
-					return c.Str(fieldKey, host)
+					return c.Str(fieldKey, r.RemoteAddr)
 				})
 			}
 			next.ServeHTTP(w, r)
@@ -138,6 +137,11 @@ func IDFromCtx(ctx context.Context) (id xid.ID, ok bool) {
 	return
 }
 
+// CtxWithID adds the given xid.ID to the context
+func CtxWithID(ctx context.Context, id xid.ID) context.Context {
+	return context.WithValue(ctx, idKey{}, id)
+}
+
 // RequestIDHandler returns a handler setting a unique id to the request which can
 // be gathered using IDFromRequest(req). This generated id is added as a field to the
 // logger using the passed fieldKey as field name. The id is also added as a response
@@ -154,7 +158,7 @@ func RequestIDHandler(fieldKey, headerName string) func(next http.Handler) http.
 			id, ok := IDFromRequest(r)
 			if !ok {
 				id = xid.New()
-				ctx = context.WithValue(ctx, idKey{}, id)
+				ctx = CtxWithID(ctx, id)
 				r = r.WithContext(ctx)
 			}
 			if fieldKey != "" {

vendor/github.com/rs/zerolog/hlog/internal/mutil/writer_proxy.go

@@ -124,11 +124,16 @@ func (f *fancyWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
 
 func (f *fancyWriter) ReadFrom(r io.Reader) (int64, error) {
 	if f.basicWriter.tee != nil {
-		return io.Copy(&f.basicWriter, r)
+		n, err := io.Copy(&f.basicWriter, r)
+		f.bytes += int(n)
+		return n, err
 	}
 	rf := f.basicWriter.ResponseWriter.(io.ReaderFrom)
 	f.basicWriter.maybeWriteHeader()
-	return rf.ReadFrom(r)
+
+	n, err := rf.ReadFrom(r)
+	f.bytes += int(n)
+	return n, err
 }
 
 type flushWriter struct {

vendor/github.com/rs/zerolog/internal/cbor/base.go

@@ -1,5 +1,13 @@
 package cbor
 
+// JSONMarshalFunc is used to marshal interface to JSON encoded byte slice.
+// Making it package level instead of embedded in Encoder brings
+// some extra efforts at importing, but avoids value copy when the functions
+// of Encoder being invoked.
+// DO REMEMBER to set this variable at importing, or
+// you might get a nil pointer dereference panic at runtime.
+var JSONMarshalFunc func(v interface{}) ([]byte, error)
+
 type Encoder struct{}
 
 // AppendKey adds a key (string) to the binary encoded log message

vendor/github.com/rs/zerolog/internal/cbor/string.go

@@ -1,5 +1,7 @@
 package cbor
 
+import "fmt"
+
 // AppendStrings encodes and adds an array of strings to the dst byte array.
 func (e Encoder) AppendStrings(dst []byte, vals []string) []byte {
 	major := majorTypeArray
@@ -30,6 +32,31 @@ func (Encoder) AppendString(dst []byte, s string) []byte {
 	return append(dst, s...)
 }
 
+// AppendStringers encodes and adds an array of Stringer values
+// to the dst byte array.
+func (e Encoder) AppendStringers(dst []byte, vals []fmt.Stringer) []byte {
+	if len(vals) == 0 {
+		return e.AppendArrayEnd(e.AppendArrayStart(dst))
+	}
+	dst = e.AppendArrayStart(dst)
+	dst = e.AppendStringer(dst, vals[0])
+	if len(vals) > 1 {
+		for _, val := range vals[1:] {
+			dst = e.AppendStringer(dst, val)
+		}
+	}
+	return e.AppendArrayEnd(dst)
+}
+
+// AppendStringer encodes and adds the Stringer value to the dst
+// byte array.
+func (e Encoder) AppendStringer(dst []byte, val fmt.Stringer) []byte {
+	if val == nil {
+		return e.AppendNil(dst)
+	}
+	return e.AppendString(dst, val.String())
+}
+
 // AppendBytes encodes and adds an array of bytes to the dst byte array.
 func (Encoder) AppendBytes(dst, s []byte) []byte {
 	major := majorTypeByteString

vendor/github.com/rs/zerolog/internal/cbor/types.go

@@ -1,7 +1,6 @@
 package cbor
 
 import (
-	"encoding/json"
 	"fmt"
 	"math"
 	"net"
@@ -432,7 +431,7 @@ func (e Encoder) AppendFloats64(dst []byte, vals []float64) []byte {
 
 // AppendInterface takes an arbitrary object and converts it to JSON and embeds it dst.
 func (e Encoder) AppendInterface(dst []byte, i interface{}) []byte {
-	marshaled, err := json.Marshal(i)
+	marshaled, err := JSONMarshalFunc(i)
 	if err != nil {
 		return e.AppendString(dst, fmt.Sprintf("marshaling error: %v", err))
 	}

vendor/github.com/rs/zerolog/internal/json/base.go

@@ -1,5 +1,13 @@
 package json
 
+// JSONMarshalFunc is used to marshal interface to JSON encoded byte slice.
+// Making it package level instead of embedded in Encoder brings
+// some extra efforts at importing, but avoids value copy when the functions
+// of Encoder being invoked.
+// DO REMEMBER to set this variable at importing, or
+// you might get a nil pointer dereference panic at runtime.
+var JSONMarshalFunc func(v interface{}) ([]byte, error)
+
 type Encoder struct{}
 
 // AppendKey appends a new key to the output JSON.

vendor/github.com/rs/zerolog/internal/json/string.go

@@ -1,6 +1,9 @@
 package json
 
-import "unicode/utf8"
+import (
+	"fmt"
+	"unicode/utf8"
+)
 
 const hex = "0123456789abcdef"
 
@@ -60,7 +63,32 @@ func (Encoder) AppendString(dst []byte, s string) []byte {
 	return append(dst, '"')
 }
 
-// appendStringComplex is used by appendString to take over an in
+// AppendStringers encodes the provided Stringer list to json and
+// appends the encoded Stringer list to the input byte slice.
+func (e Encoder) AppendStringers(dst []byte, vals []fmt.Stringer) []byte {
+	if len(vals) == 0 {
+		return append(dst, '[', ']')
+	}
+	dst = append(dst, '[')
+	dst = e.AppendStringer(dst, vals[0])
+	if len(vals) > 1 {
+		for _, val := range vals[1:] {
+			dst = e.AppendStringer(append(dst, ','), val)
+		}
+	}
+	return append(dst, ']')
+}
+
+// AppendStringer encodes the input Stringer to json and appends the
+// encoded Stringer value to the input byte slice.
+func (e Encoder) AppendStringer(dst []byte, val fmt.Stringer) []byte {
+	if val == nil {
+		return e.AppendInterface(dst, nil)
+	}
+	return e.AppendString(dst, val.String())
+}
+
+//// appendStringComplex is used by appendString to take over an in
 // progress JSON string encoding that encountered a character that needs
 // to be encoded.
 func appendStringComplex(dst []byte, s string, i int) []byte {

vendor/github.com/rs/zerolog/internal/json/types.go

@@ -1,7 +1,6 @@
 package json
 
 import (
-	"encoding/json"
 	"fmt"
 	"math"
 	"net"
@@ -350,7 +349,7 @@ func (Encoder) AppendFloats64(dst []byte, vals []float64) []byte {
 		return append(dst, '[', ']')
 	}
 	dst = append(dst, '[')
-	dst = appendFloat(dst, vals[0], 32)
+	dst = appendFloat(dst, vals[0], 64)
 	if len(vals) > 1 {
 		for _, val := range vals[1:] {
 			dst = appendFloat(append(dst, ','), val, 64)
@@ -363,7 +362,7 @@ func (Encoder) AppendFloats64(dst []byte, vals []float64) []byte {
 // AppendInterface marshals the input interface to a string and
 // appends the encoded string to the input byte slice.
 func (e Encoder) AppendInterface(dst []byte, i interface{}) []byte {
-	marshaled, err := json.Marshal(i)
+	marshaled, err := JSONMarshalFunc(i)
 	if err != nil {
 		return e.AppendString(dst, fmt.Sprintf("marshaling error: %v", err))
 	}

vendor/github.com/rs/zerolog/log.go

@@ -129,28 +129,31 @@ const (
 
 	// TraceLevel defines trace log level.
 	TraceLevel Level = -1
+	// Values less than TraceLevel are handled as numbers.
 )
 
 func (l Level) String() string {
 	switch l {
 	case TraceLevel:
-		return "trace"
+		return LevelTraceValue
 	case DebugLevel:
-		return "debug"
+		return LevelDebugValue
 	case InfoLevel:
-		return "info"
+		return LevelInfoValue
 	case WarnLevel:
-		return "warn"
+		return LevelWarnValue
 	case ErrorLevel:
-		return "error"
+		return LevelErrorValue
 	case FatalLevel:
-		return "fatal"
+		return LevelFatalValue
 	case PanicLevel:
-		return "panic"
+		return LevelPanicValue
+	case Disabled:
+		return "disabled"
 	case NoLevel:
 		return ""
 	}
-	return ""
+	return strconv.Itoa(int(l))
 }
 
 // ParseLevel converts a level string into a zerolog Level value.
@@ -171,10 +174,19 @@ func ParseLevel(levelStr string) (Level, error) {
 		return FatalLevel, nil
 	case LevelFieldMarshalFunc(PanicLevel):
 		return PanicLevel, nil
+	case LevelFieldMarshalFunc(Disabled):
+		return Disabled, nil
 	case LevelFieldMarshalFunc(NoLevel):
 		return NoLevel, nil
 	}
+	i, err := strconv.Atoi(levelStr)
+	if err != nil {
 		return NoLevel, fmt.Errorf("Unknown Level String: '%s', defaulting to NoLevel", levelStr)
+	}
+	if i > 127 || i < -128 {
+		return NoLevel, fmt.Errorf("Out-Of-Bounds Level: '%d', defaulting to NoLevel", i)
+	}
+	return Level(i), nil
 }
 
 // A Logger represents an active logging object that generates lines
@@ -188,6 +200,7 @@ type Logger struct {
 	sampler Sampler
 	context []byte
 	hooks   []Hook
+	stack   bool
 }
 
 // New creates a root logger with given output writer. If the output writer implements
@@ -218,6 +231,7 @@ func (l Logger) Output(w io.Writer) Logger {
 	l2 := New(w)
 	l2.level = l.level
 	l2.sampler = l.sampler
+	l2.stack = l.stack
 	if len(l.hooks) > 0 {
 		l2.hooks = append(l2.hooks, l.hooks...)
 	}
@@ -371,7 +385,7 @@ func (l *Logger) WithLevel(level Level) *Event {
 	case Disabled:
 		return nil
 	default:
-		panic("zerolog: WithLevel(): invalid level: " + strconv.Itoa(int(level)))
+		return l.newEvent(level, nil)
 	}
 }
 
@@ -387,7 +401,7 @@ func (l *Logger) Log() *Event {
 // Arguments are handled in the manner of fmt.Print.
 func (l *Logger) Print(v ...interface{}) {
 	if e := l.Debug(); e.Enabled() {
-		e.Msg(fmt.Sprint(v...))
+		e.CallerSkipFrame(1).Msg(fmt.Sprint(v...))
 	}
 }
 
@@ -395,7 +409,7 @@ func (l *Logger) Print(v ...interface{}) {
 // Arguments are handled in the manner of fmt.Printf.
 func (l *Logger) Printf(format string, v ...interface{}) {
 	if e := l.Debug(); e.Enabled() {
-		e.Msg(fmt.Sprintf(format, v...))
+		e.CallerSkipFrame(1).Msg(fmt.Sprintf(format, v...))
 	}
 }
 
@@ -407,7 +421,7 @@ func (l Logger) Write(p []byte) (n int, err error) {
 		// Trim CR added by stdlog.
 		p = p[0 : n-1]
 	}
-	l.Log().Msg(string(p))
+	l.Log().CallerSkipFrame(1).Msg(string(p))
 	return
 }
 
@@ -419,12 +433,15 @@ func (l *Logger) newEvent(level Level, done func(string)) *Event {
 	e := newEvent(l.w, level)
 	e.done = done
 	e.ch = l.hooks
-	if level != NoLevel {
+	if level != NoLevel && LevelFieldName != "" {
 		e.Str(LevelFieldName, LevelFieldMarshalFunc(level))
 	}
 	if l.context != nil && len(l.context) > 1 {
 		e.buf = enc.AppendObjectData(e.buf, l.context)
 	}
+	if l.stack {
+		e.Stack()
+	}
 	return e
 }
 

vendor/github.com/rs/zerolog/log/log.go

@@ -3,6 +3,7 @@ package log
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"os"
 
@@ -114,13 +115,13 @@ func Log() *zerolog.Event {
 // Print sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Print.
 func Print(v ...interface{}) {
-	Logger.Print(v...)
+	Logger.Debug().CallerSkipFrame(1).Msg(fmt.Sprint(v...))
 }
 
 // Printf sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Printf.
 func Printf(format string, v ...interface{}) {
-	Logger.Printf(format, v...)
+	Logger.Debug().CallerSkipFrame(1).Msgf(format, v...)
 }
 
 // Ctx returns the Logger associated with the ctx. If no logger

vendor/github.com/rs/zerolog/sampler.go

@@ -38,7 +38,7 @@ func (s RandomSampler) Sample(lvl Level) bool {
 }
 
 // BasicSampler is a sampler that will send every Nth events, regardless of
-// there level.
+// their level.
 type BasicSampler struct {
 	N       uint32
 	counter uint32

vendor/github.com/rs/zerolog/syslog.go

@@ -7,6 +7,10 @@ import (
 	"io"
 )
 
+// See http://cee.mitre.org/language/1.0-beta1/clt.html#syslog
+// or https://www.rsyslog.com/json-elasticsearch/
+const ceePrefix = "@cee:"
+
 // SyslogWriter is an interface matching a syslog.Writer struct.
 type SyslogWriter interface {
 	io.Writer
@@ -20,16 +24,33 @@ type SyslogWriter interface {
 
 type syslogWriter struct {
 	w      SyslogWriter
+	prefix string
 }
 
 // SyslogLevelWriter wraps a SyslogWriter and call the right syslog level
 // method matching the zerolog level.
 func SyslogLevelWriter(w SyslogWriter) LevelWriter {
-	return syslogWriter{w}
+	return syslogWriter{w, ""}
+}
+
+// SyslogCEEWriter wraps a SyslogWriter with a SyslogLevelWriter that adds a
+// MITRE CEE prefix for JSON syslog entries, compatible with rsyslog 
+// and syslog-ng JSON logging support. 
+// See https://www.rsyslog.com/json-elasticsearch/
+func SyslogCEEWriter(w SyslogWriter) LevelWriter {
+	return syslogWriter{w, ceePrefix}
 }
 
 func (sw syslogWriter) Write(p []byte) (n int, err error) {
-	return sw.w.Write(p)
+	var pn int
+	if sw.prefix != "" {
+		pn, err = sw.w.Write([]byte(sw.prefix))
+		if err != nil {
+			return pn, err
+		}
+	}
+	n, err = sw.w.Write(p)
+	return pn + n, err
 }
 
 // WriteLevel implements LevelWriter interface.
@@ -37,22 +58,23 @@ func (sw syslogWriter) WriteLevel(level Level, p []byte) (n int, err error) {
 	switch level {
 	case TraceLevel:
 	case DebugLevel:
-		err = sw.w.Debug(string(p))
+		err = sw.w.Debug(sw.prefix + string(p))
 	case InfoLevel:
-		err = sw.w.Info(string(p))
+		err = sw.w.Info(sw.prefix + string(p))
 	case WarnLevel:
-		err = sw.w.Warning(string(p))
+		err = sw.w.Warning(sw.prefix + string(p))
 	case ErrorLevel:
-		err = sw.w.Err(string(p))
+		err = sw.w.Err(sw.prefix + string(p))
 	case FatalLevel:
-		err = sw.w.Emerg(string(p))
+		err = sw.w.Emerg(sw.prefix + string(p))
 	case PanicLevel:
-		err = sw.w.Crit(string(p))
+		err = sw.w.Crit(sw.prefix + string(p))
 	case NoLevel:
-		err = sw.w.Info(string(p))
+		err = sw.w.Info(sw.prefix + string(p))
 	default:
 		panic("invalid level")
 	}
+	// Any CEE prefix is not part of the message, so we don't include its length
 	n = len(p)
 	return
 }

vendor/github.com/rs/zerolog/writer.go

@@ -1,7 +1,12 @@
 package zerolog
 
 import (
+	"bytes"
 	"io"
+	"path"
+	"runtime"
+	"strconv"
+	"strings"
 	"sync"
 )
 
@@ -56,30 +61,30 @@ type multiLevelWriter struct {
 
 func (t multiLevelWriter) Write(p []byte) (n int, err error) {
 	for _, w := range t.writers {
-		n, err = w.Write(p)
+		if _n, _err := w.Write(p); err == nil {
-		if err != nil {
+			n = _n
-			return
+			if _err != nil {
-		}
+				err = _err
-		if n != len(p) {
+			} else if _n != len(p) {
 				err = io.ErrShortWrite
-			return
 			}
 		}
-	return len(p), nil
+	}
+	return n, err
 }
 
 func (t multiLevelWriter) WriteLevel(l Level, p []byte) (n int, err error) {
 	for _, w := range t.writers {
-		n, err = w.WriteLevel(l, p)
+		if _n, _err := w.WriteLevel(l, p); err == nil {
-		if err != nil {
+			n = _n
-			return
+			if _err != nil {
-		}
+				err = _err
-		if n != len(p) {
+			} else if _n != len(p) {
 				err = io.ErrShortWrite
-			return
 			}
 		}
-	return len(p), nil
+	}
+	return n, err
 }
 
 // MultiLevelWriter creates a writer that duplicates its writes to all the
@@ -96,3 +101,54 @@ func MultiLevelWriter(writers ...io.Writer) LevelWriter {
 	}
 	return multiLevelWriter{lwriters}
 }
+
+// TestingLog is the logging interface of testing.TB.
+type TestingLog interface {
+	Log(args ...interface{})
+	Logf(format string, args ...interface{})
+	Helper()
+}
+
+// TestWriter is a writer that writes to testing.TB.
+type TestWriter struct {
+	T TestingLog
+
+	// Frame skips caller frames to capture the original file and line numbers.
+	Frame int
+}
+
+// NewTestWriter creates a writer that logs to the testing.TB.
+func NewTestWriter(t TestingLog) TestWriter {
+	return TestWriter{T: t}
+}
+
+// Write to testing.TB.
+func (t TestWriter) Write(p []byte) (n int, err error) {
+	t.T.Helper()
+
+	n = len(p)
+
+	// Strip trailing newline because t.Log always adds one.
+	p = bytes.TrimRight(p, "\n")
+
+	// Try to correct the log file and line number to the caller.
+	if t.Frame > 0 {
+		_, origFile, origLine, _ := runtime.Caller(1)
+		_, frameFile, frameLine, ok := runtime.Caller(1 + t.Frame)
+		if ok {
+			erase := strings.Repeat("\b", len(path.Base(origFile))+len(strconv.Itoa(origLine))+3)
+			t.T.Logf("%s%s:%d: %s", erase, path.Base(frameFile), frameLine, p)
+			return n, err
+		}
+	}
+	t.T.Log(string(p))
+
+	return n, err
+}
+
+// ConsoleTestWriter creates an option that correctly sets the file frame depth for testing.TB log.
+func ConsoleTestWriter(t TestingLog) func(w *ConsoleWriter) {
+	return func(w *ConsoleWriter) {
+		w.Out = TestWriter{T: t, Frame: 6}
+	}
+}

vendor/modules.txt

@@ -8,9 +8,10 @@ github.com/justinas/alice
 ## explicit
 # github.com/pmezard/go-difflib v1.0.0
 github.com/pmezard/go-difflib/difflib
-# github.com/rs/xid v1.2.1
+# github.com/rs/xid v1.3.0
+## explicit
 github.com/rs/xid
-# github.com/rs/zerolog v1.20.0
+# github.com/rs/zerolog v1.26.1
 ## explicit
 github.com/rs/zerolog
 github.com/rs/zerolog/hlog