mirror of https://github.com/minio/minio.git
154 lines
4.2 KiB
Go
154 lines
4.2 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package condition
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import (
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"fmt"
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"net/http"
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"strconv"
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)
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func toNumericLessThanFuncString(n name, key Key, value int) string {
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return fmt.Sprintf("%v:%v:%v", n, key, value)
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}
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// numericLessThanFunc - String equals function. It checks whether value by Key in given
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// values map is in condition values.
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// For example,
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// - if values = ["mybucket/foo"], at evaluate() it returns whether string
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// in value map for Key is in values.
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type numericLessThanFunc struct {
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k Key
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value int
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}
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// evaluate() - evaluates to check whether value by Key in given values is in
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// condition values.
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func (f numericLessThanFunc) evaluate(values map[string][]string) bool {
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requestValue, ok := values[http.CanonicalHeaderKey(f.k.Name())]
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if !ok {
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requestValue = values[f.k.Name()]
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}
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if len(requestValue) == 0 {
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return false
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}
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rvInt, err := strconv.Atoi(requestValue[0])
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if err != nil {
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return false
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}
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return rvInt < f.value
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}
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// key() - returns condition key which is used by this condition function.
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func (f numericLessThanFunc) key() Key {
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return f.k
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}
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// name() - returns "NumericLessThan" condition name.
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func (f numericLessThanFunc) name() name {
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return numericLessThan
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}
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func (f numericLessThanFunc) String() string {
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return toNumericLessThanFuncString(numericLessThan, f.k, f.value)
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}
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// toMap - returns map representation of this function.
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func (f numericLessThanFunc) toMap() map[Key]ValueSet {
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if !f.k.IsValid() {
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return nil
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}
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values := NewValueSet()
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values.Add(NewIntValue(f.value))
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return map[Key]ValueSet{
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f.k: values,
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}
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}
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// numericLessThanEqualsFunc - String not equals function. It checks whether value by Key in
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// given values is NOT in condition values.
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// For example,
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// - if values = ["mybucket/foo"], at evaluate() it returns whether string
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// in value map for Key is NOT in values.
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type numericLessThanEqualsFunc struct {
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numericLessThanFunc
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}
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// evaluate() - evaluates to check whether value by Key in given values is NOT in
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// condition values.
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func (f numericLessThanEqualsFunc) evaluate(values map[string][]string) bool {
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requestValue, ok := values[http.CanonicalHeaderKey(f.k.Name())]
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if !ok {
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requestValue = values[f.k.Name()]
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}
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if len(requestValue) == 0 {
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return false
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}
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rvInt, err := strconv.Atoi(requestValue[0])
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if err != nil {
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return false
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}
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return rvInt <= f.value
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}
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// name() - returns "NumericLessThanEquals" condition name.
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func (f numericLessThanEqualsFunc) name() name {
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return numericLessThanEquals
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}
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func (f numericLessThanEqualsFunc) String() string {
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return toNumericLessThanFuncString(numericLessThanEquals, f.numericLessThanFunc.k, f.numericLessThanFunc.value)
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}
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// newNumericLessThanFunc - returns new NumericLessThan function.
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func newNumericLessThanFunc(key Key, values ValueSet) (Function, error) {
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v, err := valueToInt(numericLessThan, values)
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if err != nil {
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return nil, err
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}
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return NewNumericLessThanFunc(key, v)
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}
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// NewNumericLessThanFunc - returns new NumericLessThan function.
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func NewNumericLessThanFunc(key Key, value int) (Function, error) {
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return &numericLessThanFunc{key, value}, nil
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}
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// newNumericLessThanEqualsFunc - returns new NumericLessThanEquals function.
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func newNumericLessThanEqualsFunc(key Key, values ValueSet) (Function, error) {
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v, err := valueToInt(numericLessThanEquals, values)
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if err != nil {
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return nil, err
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}
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return NewNumericLessThanEqualsFunc(key, v)
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}
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// NewNumericLessThanEqualsFunc - returns new NumericLessThanEquals function.
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func NewNumericLessThanEqualsFunc(key Key, value int) (Function, error) {
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return &numericLessThanEqualsFunc{numericLessThanFunc{key, value}}, nil
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}
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