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resolver.go
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resolver.go
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// SPDX-FileCopyrightText: 2023 SAP SE or an SAP affiliate company and Open Component Model contributors.
//
// SPDX-License-Identifier: Apache-2.0
package ocm
import (
"sync"
"github.com/open-component-model/ocm/v2/pkg/common"
"github.com/open-component-model/ocm/v2/pkg/contexts/ocm/internal"
"github.com/open-component-model/ocm/v2/pkg/errors"
)
type CompoundResolver struct {
lock sync.RWMutex
resolvers []ComponentVersionResolver
}
var _ ComponentVersionResolver = (*CompoundResolver)(nil)
func NewCompoundResolver(res ...ComponentVersionResolver) ComponentVersionResolver {
for i := 0; i < len(res); i++ {
if res[i] == nil {
res = append(res[:i], res[i+1:]...)
i--
}
}
if len(res) == 1 {
return res[0]
}
return &CompoundResolver{resolvers: res}
}
func (c *CompoundResolver) LookupComponentVersion(name string, version string) (internal.ComponentVersionAccess, error) {
c.lock.RLock()
defer c.lock.RUnlock()
for _, r := range c.resolvers {
if r == nil {
continue
}
cv, err := r.LookupComponentVersion(name, version)
if err == nil && cv != nil {
return cv, nil
}
if !errors.IsErrNotFoundKind(err, KIND_COMPONENTVERSION) {
return nil, err
}
}
return nil, errors.ErrNotFound(KIND_OCM_REFERENCE, common.NewNameVersion(name, version).String())
}
func (c *CompoundResolver) AddResolver(r ComponentVersionResolver) {
c.lock.Lock()
defer c.lock.Unlock()
c.resolvers = append(c.resolvers, r)
}
////////////////////////////////////////////////////////////////////////////////
type MatchingResolver interface {
ComponentVersionResolver
ContextProvider
AddRule(prefix string, spec RepositorySpec, prio ...int)
Finalize() error
}
func NewMatchingResolver(ctx ContextProvider) MatchingResolver {
return internal.NewMatchingResolver(ctx.OCMContext())
}