Remove ulele/deepcopier in favor of JSON deep copy

We have a very high performance JSON library that doesn't need to
perform code generation. Let's use it instead of our questionably
performant, reflection-dependent deep copy library.

Most changes because some functions can now return errors.

Also converts cmd/podman to use jsoniter, instead of pkg/json,
for increased performance.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

3 files changed, 0 insertions, 513 deletions

diff --git a/vendor/github.com/ulule/deepcopier/LICENSE b/vendor/github.com/ulule/deepcopier/LICENSE
deleted file mode 100644
index d5c4ea02c..000000000
--- a/vendor/github.com/ulule/deepcopier/LICENSE
+++ /dev/null
@@ -1,22 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2015 Ulule
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
diff --git a/vendor/github.com/ulule/deepcopier/README.md b/vendor/github.com/ulule/deepcopier/README.md
deleted file mode 100644
index 25aafae8a..000000000
--- a/vendor/github.com/ulule/deepcopier/README.md
+++ /dev/null
@@ -1,129 +0,0 @@
-# Deepcopier
-
-[![Build Status](https://secure.travis-ci.org/ulule/deepcopier.png?branch=master)](http://travis-ci.org/ulule/deepcopier)
-
-This package is meant to make copying of structs to/from others structs a bit easier.
-
-## Installation
-
-```bash
-go get -u github.com/ulule/deepcopier
-```
-
-## Usage
-
-```golang
-// Deep copy instance1 into instance2
-Copy(instance1).To(instance2)
-
-// Deep copy instance1 into instance2 and passes the following context (which
-// is basically a map[string]interface{}) as first argument
-// to methods of instance2 that defined the struct tag "context".
-Copy(instance1).WithContext(map[string]interface{}{"foo": "bar"}).To(instance2)
-
-// Deep copy instance2 into instance1
-Copy(instance1).From(instance2)
-
-// Deep copy instance2 into instance1 and passes the following context (which
-// is basically a map[string]interface{}) as first argument
-// to methods of instance1 that defined the struct tag "context".
-Copy(instance1).WithContext(map[string]interface{}{"foo": "bar"}).From(instance2)
-```
-
-Available options for `deepcopier` struct tag:
-
-| Option    | Description                                                          |
-| --------- | -------------------------------------------------------------------- |
-| `field`   | Field or method name in source instance                              |
-| `skip`    | Ignores the field                                                    |
-| `context` | Takes a `map[string]interface{}` as first argument (for methods)     |
-| `force`   | Set the value of a `sql.Null*` field (instead of copying the struct) |
-
-**Options example:**
-
-```golang
-type Source struct {
-    Name                         string
-    SkipMe                       string
-    SQLNullStringToSQLNullString sql.NullString
-    SQLNullStringToString        sql.NullString
-
-}
-
-func (Source) MethodThatTakesContext(c map[string]interface{}) string {
-    return "whatever"
-}
-
-type Destination struct {
-    FieldWithAnotherNameInSource      string         `deepcopier:"field:Name"`
-    SkipMe                            string         `deepcopier:"skip"`
-    MethodThatTakesContext            string         `deepcopier:"context"`
-    SQLNullStringToSQLNullString      sql.NullString 
-    SQLNullStringToString             string         `deepcopier:"force"`
-}
-
-```
-
-Example:
-
-```golang
-package main
-
-import (
-    "fmt"
- 
-    "github.com/ulule/deepcopier"
-)
-
-// Model
-type User struct {
-    // Basic string field
-    Name  string
-    // Deepcopier supports https://golang.org/pkg/database/sql/driver/#Valuer
-    Email sql.NullString
-}
-
-func (u *User) MethodThatTakesContext(ctx map[string]interface{}) string {
-    // do whatever you want
-    return "hello from this method"
-}
-
-// Resource
-type UserResource struct {
-    DisplayName            string `deepcopier:"field:Name"`
-    SkipMe                 string `deepcopier:"skip"`
-    MethodThatTakesContext string `deepcopier:"context"`
-    Email                  string `deepcopier:"force"`
-
-}
-
-func main() {
-    user := &User{
-        Name: "gilles",
-        Email: sql.NullString{
-            Valid: true,
-            String: "gilles@example.com",
-        },
-    }
-
-    resource := &UserResource{}
-
-    deepcopier.Copy(user).To(resource)
-
-    fmt.Println(resource.DisplayName)
-    fmt.Println(resource.Email)
-}
-```
-
-Looking for more information about the usage?
-
-We wrote [an introduction article](https://github.com/ulule/deepcopier/blob/master/examples/rest-usage/README.rst).
-Have a look and feel free to give us your feedback.
-
-## Contributing
-
-* Ping us on twitter [@oibafsellig](https://twitter.com/oibafsellig), [@thoas](https://twitter.com/thoas)
-* Fork the [project](https://github.com/ulule/deepcopier)
-* Help us improving and fixing [issues](https://github.com/ulule/deepcopier/issues)
-
-Don't hesitate ;)
diff --git a/vendor/github.com/ulule/deepcopier/deepcopier.go b/vendor/github.com/ulule/deepcopier/deepcopier.go
deleted file mode 100644
index 8a6c70b55..000000000
--- a/vendor/github.com/ulule/deepcopier/deepcopier.go
+++ /dev/null
@@ -1,362 +0,0 @@
-package deepcopier
-
-import (
-	"database/sql/driver"
-	"fmt"
-	"reflect"
-	"strings"
-)
-
-const (
-	// TagName is the deepcopier struct tag name.
-	TagName = "deepcopier"
-	// FieldOptionName is the from field option name for struct tag.
-	FieldOptionName = "field"
-	// ContextOptionName is the context option name for struct tag.
-	ContextOptionName = "context"
-	// SkipOptionName is the skip option name for struct tag.
-	SkipOptionName = "skip"
-	// ForceOptionName is the skip option name for struct tag.
-	ForceOptionName = "force"
-)
-
-type (
-	// TagOptions is a map that contains extracted struct tag options.
-	TagOptions map[string]string
-
-	// Options are copier options.
-	Options struct {
-		// Context given to WithContext() method.
-		Context map[string]interface{}
-		// Reversed reverses struct tag checkings.
-		Reversed bool
-	}
-)
-
-// DeepCopier deep copies a struct to/from a struct.
-type DeepCopier struct {
-	dst interface{}
-	src interface{}
-	ctx map[string]interface{}
-}
-
-// Copy sets source or destination.
-func Copy(src interface{}) *DeepCopier {
-	return &DeepCopier{src: src}
-}
-
-// WithContext injects the given context into the builder instance.
-func (dc *DeepCopier) WithContext(ctx map[string]interface{}) *DeepCopier {
-	dc.ctx = ctx
-	return dc
-}
-
-// To sets the destination.
-func (dc *DeepCopier) To(dst interface{}) error {
-	dc.dst = dst
-	return process(dc.dst, dc.src, Options{Context: dc.ctx})
-}
-
-// From sets the given the source as destination and destination as source.
-func (dc *DeepCopier) From(src interface{}) error {
-	dc.dst = dc.src
-	dc.src = src
-	return process(dc.dst, dc.src, Options{Context: dc.ctx, Reversed: true})
-}
-
-// process handles copy.
-func process(dst interface{}, src interface{}, args ...Options) error {
-	var (
-		options        = Options{}
-		srcValue       = reflect.Indirect(reflect.ValueOf(src))
-		dstValue       = reflect.Indirect(reflect.ValueOf(dst))
-		srcFieldNames  = getFieldNames(src)
-		srcMethodNames = getMethodNames(src)
-	)
-
-	if len(args) > 0 {
-		options = args[0]
-	}
-
-	if !dstValue.CanAddr() {
-		return fmt.Errorf("destination %+v is unaddressable", dstValue.Interface())
-	}
-
-	for _, f := range srcFieldNames {
-		var (
-			srcFieldValue               = srcValue.FieldByName(f)
-			srcFieldType, srcFieldFound = srcValue.Type().FieldByName(f)
-			srcFieldName                = srcFieldType.Name
-			dstFieldName                = srcFieldName
-			tagOptions                  TagOptions
-		)
-
-		if !srcFieldFound {
-			continue
-		}
-
-		if options.Reversed {
-			tagOptions = getTagOptions(srcFieldType.Tag.Get(TagName))
-			if v, ok := tagOptions[FieldOptionName]; ok && v != "" {
-				dstFieldName = v
-			}
-		} else {
-			if name, opts := getRelatedField(dst, srcFieldName); name != "" {
-				dstFieldName, tagOptions = name, opts
-			}
-		}
-
-		if _, ok := tagOptions[SkipOptionName]; ok {
-			continue
-		}
-
-		var (
-			dstFieldType, dstFieldFound = dstValue.Type().FieldByName(dstFieldName)
-			dstFieldValue               = dstValue.FieldByName(dstFieldName)
-		)
-
-		if !dstFieldFound {
-			continue
-		}
-
-		// Force option for empty interfaces and nullable types
-		_, force := tagOptions[ForceOptionName]
-
-		// Valuer -> ptr
-		if isNullableType(srcFieldType.Type) && dstFieldValue.Kind() == reflect.Ptr && force {
-			// We have same nullable type on both sides
-			if srcFieldValue.Type().AssignableTo(dstFieldType.Type) {
-				dstFieldValue.Set(srcFieldValue)
-				continue
-			}
-
-			v, _ := srcFieldValue.Interface().(driver.Valuer).Value()
-			if v == nil {
-				continue
-			}
-
-			valueType := reflect.TypeOf(v)
-
-			ptr := reflect.New(valueType)
-			ptr.Elem().Set(reflect.ValueOf(v))
-
-			if valueType.AssignableTo(dstFieldType.Type.Elem()) {
-				dstFieldValue.Set(ptr)
-			}
-
-			continue
-		}
-
-		// Valuer -> value
-		if isNullableType(srcFieldType.Type) {
-			// We have same nullable type on both sides
-			if srcFieldValue.Type().AssignableTo(dstFieldType.Type) {
-				dstFieldValue.Set(srcFieldValue)
-				continue
-			}
-
-			if force {
-				v, _ := srcFieldValue.Interface().(driver.Valuer).Value()
-				if v == nil {
-					continue
-				}
-
-				rv := reflect.ValueOf(v)
-				if rv.Type().AssignableTo(dstFieldType.Type) {
-					dstFieldValue.Set(rv)
-				}
-			}
-
-			continue
-		}
-
-		if dstFieldValue.Kind() == reflect.Interface {
-			if force {
-				dstFieldValue.Set(srcFieldValue)
-			}
-			continue
-		}
-
-		// Ptr -> Value
-		if srcFieldType.Type.Kind() == reflect.Ptr && !srcFieldValue.IsNil() && dstFieldType.Type.Kind() != reflect.Ptr {
-			indirect := reflect.Indirect(srcFieldValue)
-
-			if indirect.Type().AssignableTo(dstFieldType.Type) {
-				dstFieldValue.Set(indirect)
-				continue
-			}
-		}
-
-		// Other types
-		if srcFieldType.Type.AssignableTo(dstFieldType.Type) {
-			dstFieldValue.Set(srcFieldValue)
-		}
-	}
-
-	for _, m := range srcMethodNames {
-		name, opts := getRelatedField(dst, m)
-		if name == "" {
-			continue
-		}
-
-		if _, ok := opts[SkipOptionName]; ok {
-			continue
-		}
-
-		method := reflect.ValueOf(src).MethodByName(m)
-		if !method.IsValid() {
-			return fmt.Errorf("method %s is invalid", m)
-		}
-
-		var (
-			dstFieldType, _ = dstValue.Type().FieldByName(name)
-			dstFieldValue   = dstValue.FieldByName(name)
-			_, withContext  = opts[ContextOptionName]
-			_, force        = opts[ForceOptionName]
-		)
-
-		args := []reflect.Value{}
-		if withContext {
-			args = []reflect.Value{reflect.ValueOf(options.Context)}
-		}
-
-		var (
-			result          = method.Call(args)[0]
-			resultInterface = result.Interface()
-			resultValue     = reflect.ValueOf(resultInterface)
-			resultType      = resultValue.Type()
-		)
-
-		// Value -> Ptr
-		if dstFieldValue.Kind() == reflect.Ptr && force {
-			ptr := reflect.New(resultType)
-			ptr.Elem().Set(resultValue)
-
-			if ptr.Type().AssignableTo(dstFieldType.Type) {
-				dstFieldValue.Set(ptr)
-			}
-
-			continue
-		}
-
-		// Ptr -> value
-		if resultValue.Kind() == reflect.Ptr && force {
-			if resultValue.Elem().Type().AssignableTo(dstFieldType.Type) {
-				dstFieldValue.Set(resultValue.Elem())
-			}
-
-			continue
-		}
-
-		if resultType.AssignableTo(dstFieldType.Type) && result.IsValid() {
-			dstFieldValue.Set(result)
-		}
-	}
-
-	return nil
-}
-
-// getTagOptions parses deepcopier tag field and returns options.
-func getTagOptions(value string) TagOptions {
-	options := TagOptions{}
-
-	for _, opt := range strings.Split(value, ";") {
-		o := strings.Split(opt, ":")
-
-		// deepcopier:"keyword; without; value;"
-		if len(o) == 1 {
-			options[o[0]] = ""
-		}
-
-		// deepcopier:"key:value; anotherkey:anothervalue"
-		if len(o) == 2 {
-			options[strings.TrimSpace(o[0])] = strings.TrimSpace(o[1])
-		}
-	}
-
-	return options
-}
-
-// getRelatedField returns first matching field.
-func getRelatedField(instance interface{}, name string) (string, TagOptions) {
-	var (
-		value      = reflect.Indirect(reflect.ValueOf(instance))
-		fieldName  string
-		tagOptions TagOptions
-	)
-
-	for i := 0; i < value.NumField(); i++ {
-		var (
-			vField     = value.Field(i)
-			tField     = value.Type().Field(i)
-			tagOptions = getTagOptions(tField.Tag.Get(TagName))
-		)
-
-		if tField.Type.Kind() == reflect.Struct && tField.Anonymous {
-			if n, o := getRelatedField(vField.Interface(), name); n != "" {
-				return n, o
-			}
-		}
-
-		if v, ok := tagOptions[FieldOptionName]; ok && v == name {
-			return tField.Name, tagOptions
-		}
-
-		if tField.Name == name {
-			return tField.Name, tagOptions
-		}
-	}
-
-	return fieldName, tagOptions
-}
-
-// getMethodNames returns instance's method names.
-func getMethodNames(instance interface{}) []string {
-	var methods []string
-
-	t := reflect.TypeOf(instance)
-	for i := 0; i < t.NumMethod(); i++ {
-		methods = append(methods, t.Method(i).Name)
-	}
-
-	return methods
-}
-
-// getFieldNames returns instance's field names.
-func getFieldNames(instance interface{}) []string {
-	var (
-		fields []string
-		v      = reflect.Indirect(reflect.ValueOf(instance))
-		t      = v.Type()
-	)
-
-	if t.Kind() != reflect.Struct {
-		return nil
-	}
-
-	for i := 0; i < v.NumField(); i++ {
-		var (
-			vField = v.Field(i)
-			tField = v.Type().Field(i)
-		)
-
-		// Is exportable?
-		if tField.PkgPath != "" {
-			continue
-		}
-
-		if tField.Type.Kind() == reflect.Struct && tField.Anonymous {
-			fields = append(fields, getFieldNames(vField.Interface())...)
-			continue
-		}
-
-		fields = append(fields, tField.Name)
-	}
-
-	return fields
-}
-
-// isNullableType returns true if the given type is a nullable one.
-func isNullableType(t reflect.Type) bool {
-	return t.ConvertibleTo(reflect.TypeOf((*driver.Valuer)(nil)).Elem())
-}