[VOL-3678] First implementation of the BBSim-sadis-server
Change-Id: I5077a8f861f4cc6af9759f31a4a415042c05eba3
diff --git a/vendor/sigs.k8s.io/structured-merge-diff/v4/value/map.go b/vendor/sigs.k8s.io/structured-merge-diff/v4/value/map.go
new file mode 100644
index 0000000..168b9fa
--- /dev/null
+++ b/vendor/sigs.k8s.io/structured-merge-diff/v4/value/map.go
@@ -0,0 +1,270 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+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.
+*/
+
+package value
+
+import (
+ "sort"
+)
+
+// Map represents a Map or go structure.
+type Map interface {
+ // Set changes or set the value of the given key.
+ Set(key string, val Value)
+ // Get returns the value for the given key, if present, or (nil, false) otherwise.
+ Get(key string) (Value, bool)
+ // GetUsing uses the provided allocator and returns the value for the given key,
+ // if present, or (nil, false) otherwise.
+ // The returned Value should be given back to the Allocator when no longer needed
+ // by calling Allocator.Free(Value).
+ GetUsing(a Allocator, key string) (Value, bool)
+ // Has returns true if the key is present, or false otherwise.
+ Has(key string) bool
+ // Delete removes the key from the map.
+ Delete(key string)
+ // Equals compares the two maps, and return true if they are the same, false otherwise.
+ // Implementations can use MapEquals as a general implementation for this methods.
+ Equals(other Map) bool
+ // EqualsUsing uses the provided allocator and compares the two maps, and return true if
+ // they are the same, false otherwise. Implementations can use MapEqualsUsing as a general
+ // implementation for this methods.
+ EqualsUsing(a Allocator, other Map) bool
+ // Iterate runs the given function for each key/value in the
+ // map. Returning false in the closure prematurely stops the
+ // iteration.
+ Iterate(func(key string, value Value) bool) bool
+ // IterateUsing uses the provided allocator and runs the given function for each key/value
+ // in the map. Returning false in the closure prematurely stops the iteration.
+ IterateUsing(Allocator, func(key string, value Value) bool) bool
+ // Length returns the number of items in the map.
+ Length() int
+ // Empty returns true if the map is empty.
+ Empty() bool
+ // Zip iterates over the entries of two maps together. If both maps contain a value for a given key, fn is called
+ // with the values from both maps, otherwise it is called with the value of the map that contains the key and nil
+ // for the map that does not contain the key. Returning false in the closure prematurely stops the iteration.
+ Zip(other Map, order MapTraverseOrder, fn func(key string, lhs, rhs Value) bool) bool
+ // ZipUsing uses the provided allocator and iterates over the entries of two maps together. If both maps
+ // contain a value for a given key, fn is called with the values from both maps, otherwise it is called with
+ // the value of the map that contains the key and nil for the map that does not contain the key. Returning
+ // false in the closure prematurely stops the iteration.
+ ZipUsing(a Allocator, other Map, order MapTraverseOrder, fn func(key string, lhs, rhs Value) bool) bool
+}
+
+// MapTraverseOrder defines the map traversal ordering available.
+type MapTraverseOrder int
+
+const (
+ // Unordered indicates that the map traversal has no ordering requirement.
+ Unordered = iota
+ // LexicalKeyOrder indicates that the map traversal is ordered by key, lexically.
+ LexicalKeyOrder
+)
+
+// MapZip iterates over the entries of two maps together. If both maps contain a value for a given key, fn is called
+// with the values from both maps, otherwise it is called with the value of the map that contains the key and nil
+// for the other map. Returning false in the closure prematurely stops the iteration.
+func MapZip(lhs, rhs Map, order MapTraverseOrder, fn func(key string, lhs, rhs Value) bool) bool {
+ return MapZipUsing(HeapAllocator, lhs, rhs, order, fn)
+}
+
+// MapZipUsing uses the provided allocator and iterates over the entries of two maps together. If both maps
+// contain a value for a given key, fn is called with the values from both maps, otherwise it is called with
+// the value of the map that contains the key and nil for the other map. Returning false in the closure
+// prematurely stops the iteration.
+func MapZipUsing(a Allocator, lhs, rhs Map, order MapTraverseOrder, fn func(key string, lhs, rhs Value) bool) bool {
+ if lhs != nil {
+ return lhs.ZipUsing(a, rhs, order, fn)
+ }
+ if rhs != nil {
+ return rhs.ZipUsing(a, lhs, order, func(key string, rhs, lhs Value) bool { // arg positions of lhs and rhs deliberately swapped
+ return fn(key, lhs, rhs)
+ })
+ }
+ return true
+}
+
+// defaultMapZip provides a default implementation of Zip for implementations that do not need to provide
+// their own optimized implementation.
+func defaultMapZip(a Allocator, lhs, rhs Map, order MapTraverseOrder, fn func(key string, lhs, rhs Value) bool) bool {
+ switch order {
+ case Unordered:
+ return unorderedMapZip(a, lhs, rhs, fn)
+ case LexicalKeyOrder:
+ return lexicalKeyOrderedMapZip(a, lhs, rhs, fn)
+ default:
+ panic("Unsupported map order")
+ }
+}
+
+func unorderedMapZip(a Allocator, lhs, rhs Map, fn func(key string, lhs, rhs Value) bool) bool {
+ if (lhs == nil || lhs.Empty()) && (rhs == nil || rhs.Empty()) {
+ return true
+ }
+
+ if lhs != nil {
+ ok := lhs.IterateUsing(a, func(key string, lhsValue Value) bool {
+ var rhsValue Value
+ if rhs != nil {
+ if item, ok := rhs.GetUsing(a, key); ok {
+ rhsValue = item
+ defer a.Free(rhsValue)
+ }
+ }
+ return fn(key, lhsValue, rhsValue)
+ })
+ if !ok {
+ return false
+ }
+ }
+ if rhs != nil {
+ return rhs.IterateUsing(a, func(key string, rhsValue Value) bool {
+ if lhs == nil || !lhs.Has(key) {
+ return fn(key, nil, rhsValue)
+ }
+ return true
+ })
+ }
+ return true
+}
+
+func lexicalKeyOrderedMapZip(a Allocator, lhs, rhs Map, fn func(key string, lhs, rhs Value) bool) bool {
+ var lhsLength, rhsLength int
+ var orderedLength int // rough estimate of length of union of map keys
+ if lhs != nil {
+ lhsLength = lhs.Length()
+ orderedLength = lhsLength
+ }
+ if rhs != nil {
+ rhsLength = rhs.Length()
+ if rhsLength > orderedLength {
+ orderedLength = rhsLength
+ }
+ }
+ if lhsLength == 0 && rhsLength == 0 {
+ return true
+ }
+
+ ordered := make([]string, 0, orderedLength)
+ if lhs != nil {
+ lhs.IterateUsing(a, func(key string, _ Value) bool {
+ ordered = append(ordered, key)
+ return true
+ })
+ }
+ if rhs != nil {
+ rhs.IterateUsing(a, func(key string, _ Value) bool {
+ if lhs == nil || !lhs.Has(key) {
+ ordered = append(ordered, key)
+ }
+ return true
+ })
+ }
+ sort.Strings(ordered)
+ for _, key := range ordered {
+ var litem, ritem Value
+ if lhs != nil {
+ litem, _ = lhs.GetUsing(a, key)
+ }
+ if rhs != nil {
+ ritem, _ = rhs.GetUsing(a, key)
+ }
+ ok := fn(key, litem, ritem)
+ if litem != nil {
+ a.Free(litem)
+ }
+ if ritem != nil {
+ a.Free(ritem)
+ }
+ if !ok {
+ return false
+ }
+ }
+ return true
+}
+
+// MapLess compares two maps lexically.
+func MapLess(lhs, rhs Map) bool {
+ return MapCompare(lhs, rhs) == -1
+}
+
+// MapCompare compares two maps lexically.
+func MapCompare(lhs, rhs Map) int {
+ return MapCompareUsing(HeapAllocator, lhs, rhs)
+}
+
+// MapCompareUsing uses the provided allocator and compares two maps lexically.
+func MapCompareUsing(a Allocator, lhs, rhs Map) int {
+ c := 0
+ var llength, rlength int
+ if lhs != nil {
+ llength = lhs.Length()
+ }
+ if rhs != nil {
+ rlength = rhs.Length()
+ }
+ if llength == 0 && rlength == 0 {
+ return 0
+ }
+ i := 0
+ MapZipUsing(a, lhs, rhs, LexicalKeyOrder, func(key string, lhs, rhs Value) bool {
+ switch {
+ case i == llength:
+ c = -1
+ case i == rlength:
+ c = 1
+ case lhs == nil:
+ c = 1
+ case rhs == nil:
+ c = -1
+ default:
+ c = CompareUsing(a, lhs, rhs)
+ }
+ i++
+ return c == 0
+ })
+ return c
+}
+
+// MapEquals returns true if lhs == rhs, false otherwise. This function
+// acts on generic types and should not be used by callers, but can help
+// implement Map.Equals.
+// WARN: This is a naive implementation, calling lhs.Equals(rhs) is typically the most efficient.
+func MapEquals(lhs, rhs Map) bool {
+ return MapEqualsUsing(HeapAllocator, lhs, rhs)
+}
+
+// MapEqualsUsing uses the provided allocator and returns true if lhs == rhs,
+// false otherwise. This function acts on generic types and should not be used
+// by callers, but can help implement Map.Equals.
+// WARN: This is a naive implementation, calling lhs.EqualsUsing(allocator, rhs) is typically the most efficient.
+func MapEqualsUsing(a Allocator, lhs, rhs Map) bool {
+ if lhs == nil && rhs == nil {
+ return true
+ }
+ if lhs == nil || rhs == nil {
+ return false
+ }
+ if lhs.Length() != rhs.Length() {
+ return false
+ }
+ return MapZipUsing(a, lhs, rhs, Unordered, func(key string, lhs, rhs Value) bool {
+ if lhs == nil || rhs == nil {
+ return false
+ }
+ return EqualsUsing(a, lhs, rhs)
+ })
+}