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callbacks_diff.go
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119 lines (92 loc) · 2.88 KB
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package diff
import (
"fmt"
"github.com/oasdiff/kin-openapi/openapi3"
)
// CallbacksDiff describes the changes between a pair of callback objects: https://swagger.io/specification/#callback-object
type CallbacksDiff struct {
Added []string `json:"added,omitempty" yaml:"added,omitempty"`
Deleted []string `json:"deleted,omitempty" yaml:"deleted,omitempty"`
Modified ModifiedCallbacks `json:"modified,omitempty" yaml:"modified,omitempty"`
}
// Empty indicates whether a change was found in this element
func (diff *CallbacksDiff) Empty() bool {
if diff == nil {
return true
}
return len(diff.Added) == 0 &&
len(diff.Deleted) == 0 &&
len(diff.Modified) == 0
}
// ModifiedCallbacks is map of callback names to their respective diffs
type ModifiedCallbacks map[string]*PathsDiff
func newCallbacksDiff() *CallbacksDiff {
return &CallbacksDiff{
Added: []string{},
Deleted: []string{},
Modified: ModifiedCallbacks{},
}
}
func getCallbacksDiff(config *Config, state *state, callbacks1, callbacks2 openapi3.Callbacks) (*CallbacksDiff, error) {
diff, err := getCallbacksDiffInternal(config, state, callbacks1, callbacks2)
if err != nil {
return nil, err
}
if diff.Empty() {
return nil, nil
}
return diff, nil
}
func getCallbacksDiffInternal(config *Config, state *state, callbacks1, callbacks2 openapi3.Callbacks) (*CallbacksDiff, error) {
result := newCallbacksDiff()
for callbackName1, callbackRef1 := range callbacks1 {
if callbackRef2, ok := callbacks2[callbackName1]; ok {
value1, err := derefCallback(callbackRef1)
if err != nil {
return nil, err
}
value2, err := derefCallback(callbackRef2)
if err != nil {
return nil, err
}
diff, err := getCallbackDiff(config, state, value1, value2)
if err != nil {
return nil, err
}
if !diff.Empty() {
result.Modified[callbackName1] = diff
}
} else {
result.Deleted = append(result.Deleted, callbackName1)
}
}
for callbackValue2 := range callbacks2 {
if _, ok := callbacks1[callbackValue2]; !ok {
result.Added = append(result.Added, callbackValue2)
}
}
return result, nil
}
func derefCallback(ref *openapi3.CallbackRef) (*openapi3.Callback, error) {
if ref == nil || ref.Value == nil {
return nil, fmt.Errorf("callback reference is nil")
}
return ref.Value, nil
}
func getCallbackDiff(config *Config, state *state, callback1, callback2 *openapi3.Callback) (*PathsDiff, error) {
return getPathsDiff(config, state, callBackToPaths(callback1), callBackToPaths(callback2))
}
func callBackToPaths(callback *openapi3.Callback) *openapi3.Paths {
result := openapi3.NewPathsWithCapacity(callback.Len())
for k, v := range callback.Map() {
result.Set(k, v)
}
return result
}
func (diff *CallbacksDiff) getSummary() *SummaryDetails {
return &SummaryDetails{
Added: len(diff.Added),
Deleted: len(diff.Deleted),
Modified: len(diff.Modified),
}
}