66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
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// Copyright 2017 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 notification fetches notifications from the database and informs the
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// specified remote handler about their existences, inviting the third party to
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// actively query the API about it.
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// Package notification exposes functions to dynamically register methods to
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// deliver notifications from the Clair database.
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package notification
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import (
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"github.com/coreos/pkg/capnslog"
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"github.com/coreos/clair/config"
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"github.com/coreos/clair/database"
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)
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var (
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log = capnslog.NewPackageLogger("github.com/coreos/clair", "ext/notification")
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// Senders is the list of registered Senders.
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Senders = make(map[string]Sender)
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)
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// Sender represents anything that can transmit notifications.
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type Sender interface {
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// Configure attempts to initialize the notifier with the provided configuration.
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// It returns whether the notifier is enabled or not.
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Configure(*config.NotifierConfig) (bool, error)
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// Send informs the existence of the specified notification.
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Send(notification database.VulnerabilityNotification) error
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}
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// RegisterSender makes a Sender available by the provided name.
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//
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// If RegisterSender is called twice with the same name, the name is blank, or
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// if the provided Sender is nil, this function panics.
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func RegisterSender(name string, s Sender) {
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if name == "" {
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panic("notification: could not register a Sender with an empty name")
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}
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if s == nil {
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panic("notification: could not register a nil Sender")
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}
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if _, dup := Senders[name]; dup {
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panic("notification: RegisterSender called twice for " + name)
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}
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Senders[name] = s
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}
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