mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-10 09:29:30 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
101 lines
3.2 KiB
Go
101 lines
3.2 KiB
Go
// Copyright 2018 Google LLC
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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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package interpreter
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import (
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"fmt"
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"github.com/google/cel-go/common/functions"
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)
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// Dispatcher resolves function calls to their appropriate overload.
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type Dispatcher interface {
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// Add one or more overloads, returning an error if any Overload has the same Overload#Name.
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Add(overloads ...*functions.Overload) error
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// FindOverload returns an Overload definition matching the provided name.
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FindOverload(overload string) (*functions.Overload, bool)
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// OverloadIds returns the set of all overload identifiers configured for dispatch.
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OverloadIds() []string
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}
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// NewDispatcher returns an empty Dispatcher instance.
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func NewDispatcher() Dispatcher {
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return &defaultDispatcher{
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overloads: make(map[string]*functions.Overload)}
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}
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// ExtendDispatcher returns a Dispatcher which inherits the overloads of its parent, and
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// provides an isolation layer between built-ins and extension functions which is useful
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// for forward compatibility.
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func ExtendDispatcher(parent Dispatcher) Dispatcher {
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return &defaultDispatcher{
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parent: parent,
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overloads: make(map[string]*functions.Overload)}
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}
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// overloadMap helper type for indexing overloads by function name.
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type overloadMap map[string]*functions.Overload
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// defaultDispatcher struct which contains an overload map.
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type defaultDispatcher struct {
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parent Dispatcher
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overloads overloadMap
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}
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// Add implements the Dispatcher.Add interface method.
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func (d *defaultDispatcher) Add(overloads ...*functions.Overload) error {
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for _, o := range overloads {
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// add the overload unless an overload of the same name has already been provided.
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if _, found := d.overloads[o.Operator]; found {
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return fmt.Errorf("overload already exists '%s'", o.Operator)
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}
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// index the overload by function name.
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d.overloads[o.Operator] = o
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}
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return nil
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}
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// FindOverload implements the Dispatcher.FindOverload interface method.
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func (d *defaultDispatcher) FindOverload(overload string) (*functions.Overload, bool) {
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o, found := d.overloads[overload]
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// Attempt to dispatch to an overload defined in the parent.
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if !found && d.parent != nil {
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return d.parent.FindOverload(overload)
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}
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return o, found
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}
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// OverloadIds implements the Dispatcher interface method.
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func (d *defaultDispatcher) OverloadIds() []string {
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i := 0
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overloads := make([]string, len(d.overloads))
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for name := range d.overloads {
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overloads[i] = name
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i++
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}
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if d.parent == nil {
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return overloads
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}
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parentOverloads := d.parent.OverloadIds()
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for _, pName := range parentOverloads {
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if _, found := d.overloads[pName]; !found {
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overloads = append(overloads, pName)
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}
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}
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return overloads
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}
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