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65 lines
1.9 KiB
65 lines
1.9 KiB
// Copyright 2015 clair authors
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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 updater
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import (
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"sync"
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"github.com/coreos/clair/database"
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)
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var metadataFetchers = make(map[string]MetadataFetcher)
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type VulnerabilityWithLock struct {
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*database.Vulnerability
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Lock sync.Mutex
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}
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// MetadataFetcher
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type MetadataFetcher interface {
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// Load runs right before the Updater calls AddMetadata for each vulnerabilities.
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Load(database.Datastore) error
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// AddMetadata adds metadata to the given database.Vulnerability.
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// It is expected that the fetcher uses .Lock.Lock() when manipulating the Metadata map.
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AddMetadata(*VulnerabilityWithLock) error
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// Unload runs right after the Updater finished calling AddMetadata for every vulnerabilities.
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Unload()
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// Clean deletes any allocated resources.
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// It is invoked when Clair stops.
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Clean()
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}
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// RegisterFetcher makes a Fetcher available by the provided name.
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// If Register is called twice with the same name or if driver is nil,
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// it panics.
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func RegisterMetadataFetcher(name string, f MetadataFetcher) {
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if name == "" {
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panic("updater: could not register a MetadataFetcher with an empty name")
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}
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if f == nil {
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panic("updater: could not register a nil MetadataFetcher")
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}
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if _, dup := fetchers[name]; dup {
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panic("updater: RegisterMetadataFetcher called twice for " + name)
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}
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metadataFetchers[name] = f
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}
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