go.mod, vendor: update (#3358)

* go.mod, vendor: remove unnecessary dependencies

Commands:
1. go mod tidy
2. go mod vendor

* go.mod, vendor: update cloud.google.com/go

Commands:
1. go get -u cloud.google.com/go
2. go mod tidy
3. go mod vendor

* go.mod, vendor: update cloud.google.com/*

Commands:
1. go get -u cloud.google.com/storage cloud.google.com/logging
2. go mod tidy
3. go mod vendor

* go.mod, .golangci.yml, vendor: update *lint*

Commands:
1. go get -u golang.org/x/tools github.com/golangci/golangci-lint@v1.47.0
2. go mod tidy
3. go mod vendor
4. edit .golangci.yml to suppress new errors (resolved in the same PR later)

* all: fix lint errors

hash.go: copy() recommended by gosimple
parse.go: ent is never nil
verifier.go: signal.Notify() with unbuffered channel is bad. Have no idea why.

* .golangci.yml: adjust godot rules

check-all is deprecated, but still work
if you're hesitating too - I'll remove this commit

17 files changed, 1144 insertions, 0 deletions

diff --git a/vendor/github.com/ldez/gomoddirectives/.gitignore b/vendor/github.com/ldez/gomoddirectives/.gitignore
new file mode 100644
index 000000000..9da3e0da9
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/.gitignore
@@ -0,0 +1,2 @@
+.idea/
+/gomoddirectives
diff --git a/vendor/github.com/ldez/gomoddirectives/.golangci.yml b/vendor/github.com/ldez/gomoddirectives/.golangci.yml
new file mode 100644
index 000000000..a2483e95f
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/.golangci.yml
@@ -0,0 +1,88 @@
+run:
+  deadline: 2m
+  skip-files: []
+  skip-dirs: []
+
+linters-settings:
+  govet:
+    enable-all: true
+  gocyclo:
+    min-complexity: 12
+  goconst:
+    min-len: 3
+    min-occurrences: 3
+  misspell:
+    locale: US
+  gofumpt:
+    extra-rules: true
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+      - github.com/pkg/errors
+  godox:
+    keywords:
+      - FIXME
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - style
+      - performance
+    disabled-checks:
+      - sloppyReassign
+      - rangeValCopy
+      - octalLiteral
+      - paramTypeCombine # already handle by gofumpt.extra-rules
+    settings:
+      hugeParam:
+        sizeThreshold: 100
+  forbidigo:
+    forbid:
+      - '^print(ln)?$'
+      - '^fmt\.Print(f|ln)?$'
+      - '^panic$'
+      - '^spew\.Print(f|ln)?$'
+      - '^spew\.Dump$'
+  tagliatelle:
+    case:
+      rules:
+        json: pascal
+
+linters:
+  enable-all: true
+  disable:
+    - maligned # deprecated
+    - interfacer # deprecated
+    - golint # deprecated
+    - scopelint # deprecated
+    - sqlclosecheck # not relevant (SQL)
+    - rowserrcheck # not relevant (SQL)
+    - cyclop # duplicate of gocyclo
+    - lll
+    - dupl
+    - prealloc
+    - bodyclose
+    - wsl
+    - nlreturn
+    - gomnd
+    - testpackage
+    - paralleltest
+    - tparallel
+    - goerr113
+    - wrapcheck
+    - exhaustive
+    - exhaustivestruct
+    - varnamelen
+
+issues:
+  exclude-use-default: false
+  max-per-linter: 0
+  max-same-issues: 0
+  exclude: []
+  exclude-rules:
+    - path: "(.+)_test.go"
+      linters:
+      - funlen
+      - goconst
+    - path: cmd/gomoddirectives/gomoddirectives.go
+      text: 'use of `fmt.Println` forbidden'
diff --git a/vendor/github.com/ldez/gomoddirectives/LICENSE b/vendor/github.com/ldez/gomoddirectives/LICENSE
new file mode 100644
index 000000000..caed523b4
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/LICENSE
@@ -0,0 +1,190 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2021 Fernandez Ludovic
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/ldez/gomoddirectives/Makefile b/vendor/github.com/ldez/gomoddirectives/Makefile
new file mode 100644
index 000000000..dd3b335c7
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/Makefile
@@ -0,0 +1,15 @@
+.PHONY: clean check test build
+
+default: clean check test build
+
+clean:
+	rm -rf dist/ cover.out
+
+test: clean
+	go test -v -cover ./...
+
+check:
+	golangci-lint run
+
+build:
+	go build -v -ldflags "-s -w" -trimpath ./cmd/gomoddirectives/
diff --git a/vendor/github.com/ldez/gomoddirectives/go.mod b/vendor/github.com/ldez/gomoddirectives/go.mod
new file mode 100644
index 000000000..fb65d2ddc
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/go.mod
@@ -0,0 +1,8 @@
+module github.com/ldez/gomoddirectives
+
+go 1.16
+
+require (
+	github.com/stretchr/testify v1.7.0
+	golang.org/x/mod v0.4.2
+)
diff --git a/vendor/github.com/ldez/gomoddirectives/go.sum b/vendor/github.com/ldez/gomoddirectives/go.sum
new file mode 100644
index 000000000..4e4ac3ecc
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/go.sum
@@ -0,0 +1,25 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+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/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=
+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/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/sync v0.0.0-20190423024810-112230192c58/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/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 h1:/atklqdjdhuosWIl6AIbOeHJjicWYPqR9bpxqxYG2pA=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/vendor/github.com/ldez/gomoddirectives/gomoddirectives.go b/vendor/github.com/ldez/gomoddirectives/gomoddirectives.go
new file mode 100644
index 000000000..2a4c90474
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/gomoddirectives.go
@@ -0,0 +1,125 @@
+// Package gomoddirectives a linter that handle `replace`, `retract`, `exclude` directives into `go.mod`.
+package gomoddirectives
+
+import (
+	"fmt"
+	"go/token"
+	"strings"
+
+	"golang.org/x/mod/modfile"
+)
+
+const (
+	reasonRetract          = "a comment is mandatory to explain why the version has been retracted"
+	reasonExclude          = "exclude directive is not allowed"
+	reasonReplaceLocal     = "local replacement are not allowed"
+	reasonReplace          = "replacement are not allowed"
+	reasonReplaceIdentical = "the original module and the replacement are identical"
+	reasonReplaceDuplicate = "multiple replacement of the same module"
+)
+
+// Result the analysis result.
+type Result struct {
+	Reason string
+	Start  token.Position
+	End    token.Position
+}
+
+// NewResult creates a new Result.
+func NewResult(file *modfile.File, line *modfile.Line, reason string) Result {
+	return Result{
+		Start:  token.Position{Filename: file.Syntax.Name, Line: line.Start.Line, Column: line.Start.LineRune},
+		End:    token.Position{Filename: file.Syntax.Name, Line: line.End.Line, Column: line.End.LineRune},
+		Reason: reason,
+	}
+}
+
+func (r Result) String() string {
+	return fmt.Sprintf("%s: %s", r.Start, r.Reason)
+}
+
+// Options the analyzer options.
+type Options struct {
+	ReplaceAllowList          []string
+	ReplaceAllowLocal         bool
+	ExcludeForbidden          bool
+	RetractAllowNoExplanation bool
+}
+
+// Analyze analyzes a project.
+func Analyze(opts Options) ([]Result, error) {
+	f, err := GetModuleFile()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get module file: %w", err)
+	}
+
+	return AnalyzeFile(f, opts), nil
+}
+
+// AnalyzeFile analyzes a mod file.
+func AnalyzeFile(file *modfile.File, opts Options) []Result {
+	var results []Result
+
+	if !opts.RetractAllowNoExplanation {
+		for _, r := range file.Retract {
+			if r.Rationale != "" {
+				continue
+			}
+
+			results = append(results, NewResult(file, r.Syntax, reasonRetract))
+		}
+	}
+
+	if opts.ExcludeForbidden {
+		for _, e := range file.Exclude {
+			results = append(results, NewResult(file, e.Syntax, reasonExclude))
+		}
+	}
+
+	uniqReplace := map[string]struct{}{}
+
+	for _, r := range file.Replace {
+		reason := check(opts, r)
+		if reason != "" {
+			results = append(results, NewResult(file, r.Syntax, reason))
+			continue
+		}
+
+		if r.Old.Path == r.New.Path && r.Old.Version == r.New.Version {
+			results = append(results, NewResult(file, r.Syntax, reasonReplaceIdentical))
+			continue
+		}
+
+		if _, ok := uniqReplace[r.Old.Path+r.Old.Version]; ok {
+			results = append(results, NewResult(file, r.Syntax, reasonReplaceDuplicate))
+		}
+
+		uniqReplace[r.Old.Path+r.Old.Version] = struct{}{}
+	}
+
+	return results
+}
+
+func check(o Options, r *modfile.Replace) string {
+	if isLocal(r) {
+		if o.ReplaceAllowLocal {
+			return ""
+		}
+
+		return fmt.Sprintf("%s: %s", reasonReplaceLocal, r.Old.Path)
+	}
+
+	for _, v := range o.ReplaceAllowList {
+		if r.Old.Path == v {
+			return ""
+		}
+	}
+
+	return fmt.Sprintf("%s: %s", reasonReplace, r.Old.Path)
+}
+
+// Filesystem paths found in "replace" directives are represented by a path with an empty version.
+// https://github.com/golang/mod/blob/bc388b264a244501debfb9caea700c6dcaff10e2/module/module.go#L122-L124
+func isLocal(r *modfile.Replace) bool {
+	return strings.TrimSpace(r.New.Version) == ""
+}
diff --git a/vendor/github.com/ldez/gomoddirectives/module.go b/vendor/github.com/ldez/gomoddirectives/module.go
new file mode 100644
index 000000000..907be244f
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/module.go
@@ -0,0 +1,48 @@
+package gomoddirectives
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+
+	"golang.org/x/mod/modfile"
+)
+
+type modInfo struct {
+	Path      string `json:"Path"`
+	Dir       string `json:"Dir"`
+	GoMod     string `json:"GoMod"`
+	GoVersion string `json:"GoVersion"`
+	Main      bool   `json:"Main"`
+}
+
+// GetModuleFile gets module file.
+func GetModuleFile() (*modfile.File, error) {
+	// https://github.com/golang/go/issues/44753#issuecomment-790089020
+	cmd := exec.Command("go", "list", "-m", "-json")
+
+	raw, err := cmd.CombinedOutput()
+	if err != nil {
+		return nil, fmt.Errorf("command go list: %w: %s", err, string(raw))
+	}
+
+	var v modInfo
+	err = json.NewDecoder(bytes.NewBuffer(raw)).Decode(&v)
+	if err != nil {
+		return nil, fmt.Errorf("unmarshaling error: %w: %s", err, string(raw))
+	}
+
+	if v.GoMod == "" {
+		return nil, errors.New("working directory is not part of a module")
+	}
+
+	raw, err = os.ReadFile(v.GoMod)
+	if err != nil {
+		return nil, fmt.Errorf("reading go.mod file: %w", err)
+	}
+
+	return modfile.Parse("go.mod", raw, nil)
+}
diff --git a/vendor/github.com/ldez/gomoddirectives/readme.md b/vendor/github.com/ldez/gomoddirectives/readme.md
new file mode 100644
index 000000000..510c8502e
--- /dev/null
+++ b/vendor/github.com/ldez/gomoddirectives/readme.md
@@ -0,0 +1,16 @@
+# gomoddirectives
+
+[![Sponsor](https://img.shields.io/badge/Sponsor%20me-%E2%9D%A4%EF%B8%8F-pink)](https://github.com/sponsors/ldez)
+[![Build Status](https://github.com/ldez/gomoddirectives/workflows/Main/badge.svg?branch=master)](https://github.com/ldez/gomoddirectives/actions)
+
+A linter that handle [`replace`](https://golang.org/ref/mod#go-mod-file-replace), [`retract`](https://golang.org/ref/mod#go-mod-file-retract), [`exclude`](https://golang.org/ref/mod#go-mod-file-exclude) directives into `go.mod`.
+
+Features:
+
+- ban all [`replace`](https://golang.org/ref/mod#go-mod-file-replace) directives
+- allow only local [`replace`](https://golang.org/ref/mod#go-mod-file-replace) directives
+- allow only some [`replace`](https://golang.org/ref/mod#go-mod-file-replace) directives
+- force explanation for [`retract`](https://golang.org/ref/mod#go-mod-file-retract) directives
+- ban all [`exclude`](https://golang.org/ref/mod#go-mod-file-exclude) directives
+- detect duplicated [`replace`](https://golang.org/ref/mod#go-mod-file-replace) directives
+- detect identical [`replace`](https://golang.org/ref/mod#go-mod-file-replace) directives
diff --git a/vendor/github.com/ldez/tagliatelle/.gitignore b/vendor/github.com/ldez/tagliatelle/.gitignore
new file mode 100644
index 000000000..74c84ce62
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/.gitignore
@@ -0,0 +1,3 @@
+.idea/
+/tagliatelle
+notes.md
diff --git a/vendor/github.com/ldez/tagliatelle/.golangci.yml b/vendor/github.com/ldez/tagliatelle/.golangci.yml
new file mode 100644
index 000000000..53313e308
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/.golangci.yml
@@ -0,0 +1,79 @@
+run:
+  timeout: 5m
+  skip-files: [ ]
+  skip-dirs: [ ]
+
+linters-settings:
+  govet:
+    enable-all: true
+    disable:
+      - fieldalignment
+  gocyclo:
+    min-complexity: 15
+  goconst:
+    min-len: 5
+    min-occurrences: 3
+  misspell:
+    locale: US
+  funlen:
+    lines: -1
+    statements: 40
+  godox:
+    keywords:
+      - FIXME
+  gofumpt:
+    extra-rules: true
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+      - github.com/sirupsen/logrus
+      - github.com/pkg/errors
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - style
+      - performance
+    disabled-checks:
+      - sloppyReassign
+      - rangeValCopy
+      - octalLiteral
+      - paramTypeCombine # already handle by gofumpt.extra-rules
+    settings:
+      hugeParam:
+        sizeThreshold: 100
+
+linters:
+  enable-all: true
+  disable:
+    - golint # deprecated
+    - maligned # deprecated
+    - interfacer # deprecated
+    - scopelint # deprecated
+    - sqlclosecheck # not relevant (SQL)
+    - rowserrcheck # not relevant (SQL)
+    - cyclop # duplicate of gocyclo
+    - lll
+    - dupl
+    - wsl
+    - nlreturn
+    - gomnd
+    - goerr113
+    - wrapcheck
+    - exhaustive
+    - exhaustivestruct
+    - testpackage
+    - tparallel
+    - paralleltest
+    - prealloc
+    - ifshort
+    - forcetypeassert
+    - varnamelen
+    - nilnil
+    - errchkjson
+
+issues:
+  exclude-use-default: false
+  max-per-linter: 0
+  max-same-issues: 0
+  exclude: []
diff --git a/vendor/github.com/ldez/tagliatelle/LICENSE b/vendor/github.com/ldez/tagliatelle/LICENSE
new file mode 100644
index 000000000..caed523b4
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/LICENSE
@@ -0,0 +1,190 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2021 Fernandez Ludovic
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/ldez/tagliatelle/Makefile b/vendor/github.com/ldez/tagliatelle/Makefile
new file mode 100644
index 000000000..196f70c02
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/Makefile
@@ -0,0 +1,15 @@
+.PHONY: clean check test build
+
+default: clean check test build
+
+clean:
+	rm -rf dist/ cover.out
+
+test: clean
+	go test -v -cover ./...
+
+check:
+	golangci-lint run
+
+build:
+	go build -ldflags "-s -w" -trimpath ./cmd/tagliatelle/
diff --git a/vendor/github.com/ldez/tagliatelle/go.mod b/vendor/github.com/ldez/tagliatelle/go.mod
new file mode 100644
index 000000000..159e907fb
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/go.mod
@@ -0,0 +1,8 @@
+module github.com/ldez/tagliatelle
+
+go 1.16
+
+require (
+	github.com/ettle/strcase v0.1.1
+	golang.org/x/tools v0.1.0
+)
diff --git a/vendor/github.com/ldez/tagliatelle/go.sum b/vendor/github.com/ldez/tagliatelle/go.sum
new file mode 100644
index 000000000..ae1c76f51
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/go.sum
@@ -0,0 +1,38 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/ettle/strcase v0.1.1 h1:htFueZyVeE1XNnMEfbqp5r67qAN/4r6ya1ysq8Q+Zcw=
+github.com/ettle/strcase v0.1.1/go.mod h1:hzDLsPC7/lwKyBOywSHEP89nt2pDgdy+No1NBA9o9VY=
+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/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+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 v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
+golang.org/x/mod v0.3.0/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 v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/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 v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4 h1:myAQVi0cGEoqQVR5POX+8RR2mrocKqNN1hmeMqhX27k=
+golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/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 v0.1.0 h1:po9/4sTYwZU9lPhi1tOrb4hCv3qrhiQ77LZfGa2OjwY=
+golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
+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=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/vendor/github.com/ldez/tagliatelle/readme.md b/vendor/github.com/ldez/tagliatelle/readme.md
new file mode 100644
index 000000000..85849eab4
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/readme.md
@@ -0,0 +1,84 @@
+# Tagliatelle
+
+[![Sponsor](https://img.shields.io/badge/Sponsor%20me-%E2%9D%A4%EF%B8%8F-pink)](https://github.com/sponsors/ldez)
+[![Build Status](https://github.com/ldez/tagliatelle/workflows/Main/badge.svg?branch=master)](https://github.com/ldez/tagliatelle/actions)
+
+A linter that handles struct tags.
+
+Supported string casing:
+
+- `camel`
+- `pascal`
+- `kebab`
+- `snake`
+- `goCamel` Respects [Go's common initialisms](https://github.com/golang/lint/blob/83fdc39ff7b56453e3793356bcff3070b9b96445/lint.go#L770-L809) (e.g. HttpResponse -> HTTPResponse).
+- `goPascal` Respects [Go's common initialisms](https://github.com/golang/lint/blob/83fdc39ff7b56453e3793356bcff3070b9b96445/lint.go#L770-L809) (e.g. HttpResponse -> HTTPResponse).
+- `goKebab` Respects [Go's common initialisms](https://github.com/golang/lint/blob/83fdc39ff7b56453e3793356bcff3070b9b96445/lint.go#L770-L809) (e.g. HttpResponse -> HTTPResponse).
+- `goSnake` Respects [Go's common initialisms](https://github.com/golang/lint/blob/83fdc39ff7b56453e3793356bcff3070b9b96445/lint.go#L770-L809) (e.g. HttpResponse -> HTTPResponse).
+- `upper`
+- `lower`
+
+| Source         | Camel Case     | Go Camel Case  |
+|----------------|----------------|----------------|
+| GooID          | gooId          | gooID          |
+| HTTPStatusCode | httpStatusCode | httpStatusCode |
+| FooBAR         | fooBar         | fooBar         |
+| URL            | url            | url            |
+| ID             | id             | id             |
+| hostIP         | hostIp         | hostIP         |
+| JSON           | json           | json           |
+| JSONName       | jsonName       | jsonName       |
+| NameJSON       | nameJson       | nameJSON       |
+| UneTête        | uneTête        | uneTête        |
+
+| Source         | Pascal Case    | Go Pascal Case |
+|----------------|----------------|----------------|
+| GooID          | GooId          | GooID          |
+| HTTPStatusCode | HttpStatusCode | HTTPStatusCode |
+| FooBAR         | FooBar         | FooBar         |
+| URL            | Url            | URL            |
+| ID             | Id             | ID             |
+| hostIP         | HostIp         | HostIP         |
+| JSON           | Json           | JSON           |
+| JSONName       | JsonName       | JSONName       |
+| NameJSON       | NameJson       | NameJSON       |
+| UneTête        | UneTête        | UneTête        |
+
+| Source         | Snake Case       | Go Snake Case    |
+|----------------|------------------|------------------|
+| GooID          | goo_id           | goo_ID           |
+| HTTPStatusCode | http_status_code | HTTP_status_code |
+| FooBAR         | foo_bar          | foo_bar          |
+| URL            | url              | URL              |
+| ID             | id               | ID               |
+| hostIP         | host_ip          | host_IP          |
+| JSON           | json             | JSON             |
+| JSONName       | json_name        | JSON_name        |
+| NameJSON       | name_json        | name_JSON        |
+| UneTête        | une_tête         | une_tête         |
+
+| Source         | Kebab Case       | Go KebabCase     |
+|----------------|------------------|------------------|
+| GooID          | goo-id           | goo-ID           |
+| HTTPStatusCode | http-status-code | HTTP-status-code |
+| FooBAR         | foo-bar          | foo-bar          |
+| URL            | url              | URL              |
+| ID             | id               | ID               |
+| hostIP         | host-ip          | host-IP          |
+| JSON           | json             | JSON             |
+| JSONName       | json-name        | JSON-name        |
+| NameJSON       | name-json        | name-JSON        |
+| UneTête        | une-tête         | une-tête         |
+
+
+## Examples
+
+```go
+// json and camel case
+type Foo struct {
+    ID     string `json:"ID"` // must be "id"
+    UserID string `json:"UserID"`// must be "userId"
+    Name   string `json:"name"`
+    Value  string `json:"val,omitempty"`// must be "value"
+}
+```
diff --git a/vendor/github.com/ldez/tagliatelle/tagliatelle.go b/vendor/github.com/ldez/tagliatelle/tagliatelle.go
new file mode 100644
index 000000000..53e77d1cb
--- /dev/null
+++ b/vendor/github.com/ldez/tagliatelle/tagliatelle.go
@@ -0,0 +1,210 @@
+// Package tagliatelle a linter that handle struct tags.
+package tagliatelle
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"go/ast"
+	"reflect"
+	"strings"
+
+	"github.com/ettle/strcase"
+	"golang.org/x/tools/go/analysis"
+	"golang.org/x/tools/go/analysis/passes/inspect"
+	"golang.org/x/tools/go/ast/inspector"
+)
+
+// Config the tagliatelle configuration.
+type Config struct {
+	Rules        map[string]string
+	UseFieldName bool
+}
+
+// New creates an analyzer.
+func New(config Config) *analysis.Analyzer {
+	return &analysis.Analyzer{
+		Name: "tagliatelle",
+		Doc:  "Checks the struct tags.",
+		Run: func(pass *analysis.Pass) (interface{}, error) {
+			if len(config.Rules) == 0 {
+				return nil, nil
+			}
+
+			return run(pass, config)
+		},
+		Requires: []*analysis.Analyzer{
+			inspect.Analyzer,
+		},
+	}
+}
+
+func run(pass *analysis.Pass, config Config) (interface{}, error) {
+	isp, ok := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector)
+	if !ok {
+		return nil, errors.New("missing inspect analyser")
+	}
+
+	nodeFilter := []ast.Node{
+		(*ast.StructType)(nil),
+	}
+
+	isp.Preorder(nodeFilter, func(n ast.Node) {
+		node, ok := n.(*ast.StructType)
+		if !ok {
+			return
+		}
+
+		for _, field := range node.Fields.List {
+			analyze(pass, config, node, field)
+		}
+	})
+
+	return nil, nil
+}
+
+func analyze(pass *analysis.Pass, config Config, n *ast.StructType, field *ast.Field) {
+	if n.Fields == nil || n.Fields.NumFields() < 1 {
+		// skip empty structs
+		return
+	}
+
+	if field.Tag == nil {
+		// skip when no struct tag
+		return
+	}
+
+	fieldName, err := getFieldName(field)
+	if err != nil {
+		pass.Reportf(n.Pos(), "unable to get field name: %v", err)
+		return
+	}
+
+	for key, convName := range config.Rules {
+		if convName == "" {
+			continue
+		}
+
+		value, flags, ok := lookupTagValue(field.Tag, key)
+		if !ok {
+			// skip when no struct tag for the key
+			continue
+		}
+
+		if value == "-" {
+			// skip when skipped :)
+			continue
+		}
+
+		// TODO(ldez): need to be rethink.
+		// This is an exception because of a bug.
+		// https://github.com/ldez/tagliatelle/issues/8
+		// For now, tagliatelle should try to remain neutral in terms of format.
+		if hasTagFlag(flags, "inline") {
+			// skip for inline children (no name to lint)
+			continue
+		}
+
+		if value == "" {
+			value = fieldName
+		}
+
+		converter, err := getConverter(convName)
+		if err != nil {
+			pass.Reportf(n.Pos(), "%s(%s): %v", key, convName, err)
+			continue
+		}
+
+		expected := value
+		if config.UseFieldName {
+			expected = fieldName
+		}
+
+		if value != converter(expected) {
+			pass.Reportf(field.Tag.Pos(), "%s(%s): got '%s' want '%s'", key, convName, value, converter(expected))
+		}
+	}
+}
+
+func getFieldName(field *ast.Field) (string, error) {
+	var name string
+	for _, n := range field.Names {
+		if n.Name != "" {
+			name = n.Name
+		}
+	}
+
+	if name != "" {
+		return name, nil
+	}
+
+	return getTypeName(field.Type)
+}
+
+func getTypeName(exp ast.Expr) (string, error) {
+	switch typ := exp.(type) {
+	case *ast.Ident:
+		return typ.Name, nil
+	case *ast.StarExpr:
+		return getTypeName(typ.X)
+	case *ast.SelectorExpr:
+		return getTypeName(typ.Sel)
+	default:
+		bytes, _ := json.Marshal(exp)
+		return "", fmt.Errorf("unexpected error: type %T: %s", typ, string(bytes))
+	}
+}
+
+func lookupTagValue(tag *ast.BasicLit, key string) (name string, flags []string, ok bool) {
+	raw := strings.Trim(tag.Value, "`")
+
+	value, ok := reflect.StructTag(raw).Lookup(key)
+	if !ok {
+		return value, nil, ok
+	}
+
+	values := strings.Split(value, ",")
+
+	if len(values) < 1 {
+		return "", nil, true
+	}
+
+	return values[0], values[1:], true
+}
+
+func hasTagFlag(flags []string, query string) bool {
+	for _, flag := range flags {
+		if flag == query {
+			return true
+		}
+	}
+
+	return false
+}
+
+func getConverter(c string) (func(s string) string, error) {
+	switch c {
+	case "camel":
+		return strcase.ToCamel, nil
+	case "pascal":
+		return strcase.ToPascal, nil
+	case "kebab":
+		return strcase.ToKebab, nil
+	case "snake":
+		return strcase.ToSnake, nil
+	case "goCamel":
+		return strcase.ToGoCamel, nil
+	case "goPascal":
+		return strcase.ToGoPascal, nil
+	case "goKebab":
+		return strcase.ToGoKebab, nil
+	case "goSnake":
+		return strcase.ToGoSnake, nil
+	case "upper":
+		return strings.ToUpper, nil
+	case "lower":
+		return strings.ToLower, nil
+	default:
+		return nil, fmt.Errorf("unsupported case: %s", c)
+	}
+}