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driver_federation.go
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/
driver_federation.go
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/******************************************************************************
*
* Copyright 2019 SAP SE
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
package test
import (
"context"
"errors"
"fmt"
"time"
"github.com/sapcc/keppel/internal/keppel"
"github.com/sapcc/keppel/internal/models"
)
var (
federationDriversForThisUnitTest []*FederationDriver
)
// FederationDriver (driver ID "unittest") is a keppel.FederationDriver for unit tests.
type FederationDriver struct {
APIPublicHostName string
ClaimFailsBecauseOfUserError bool
ClaimFailsBecauseOfServerError bool
ForfeitFails bool
NextSubleaseTokenSecretToIssue string
ValidSubleaseTokenSecrets map[string]string // maps accountName => subleaseTokenSecret
RecordedAccounts []AccountRecordedByFederationDriver
}
// AccountRecordedByFederationDriver appears in type FederationDriver.
type AccountRecordedByFederationDriver struct {
Account models.Account
RecordedAt time.Time
}
func init() {
keppel.FederationDriverRegistry.Add(func() keppel.FederationDriver { return &FederationDriver{} })
}
// PluginTypeID implements the keppel.FederationDriver interface.
func (d *FederationDriver) PluginTypeID() string { return "unittest" }
// Init implements the keppel.FederationDriver interface.
func (d *FederationDriver) Init(ad keppel.AuthDriver, cfg keppel.Configuration) error {
d.APIPublicHostName = cfg.APIPublicHostname
d.ValidSubleaseTokenSecrets = make(map[string]string)
federationDriversForThisUnitTest = append(federationDriversForThisUnitTest, d)
return nil
}
// ClaimAccountName implements the keppel.FederationDriver interface.
func (d *FederationDriver) ClaimAccountName(ctx context.Context, account models.Account, subleaseTokenSecret string) (keppel.ClaimResult, error) {
// simulated failures for primary accounts
if d.ClaimFailsBecauseOfUserError {
return keppel.ClaimFailed, fmt.Errorf("cannot assign name %q to auth tenant %q", account.Name, account.AuthTenantID)
}
if d.ClaimFailsBecauseOfServerError {
return keppel.ClaimErrored, fmt.Errorf("failed to assign name %q to auth tenant %q", account.Name, account.AuthTenantID)
}
// for replica accounts, do the regular sublease-token dance
if account.UpstreamPeerHostName != "" {
expectedTokenSecret, exists := d.ValidSubleaseTokenSecrets[account.Name]
if !exists || subleaseTokenSecret != expectedTokenSecret {
return keppel.ClaimFailed, errors.New("wrong sublease token")
}
// each sublease token can only be used once
delete(d.ValidSubleaseTokenSecrets, account.Name)
}
return keppel.ClaimSucceeded, nil
}
// IssueSubleaseTokenSecret implements the keppel.FederationDriver interface.
func (d *FederationDriver) IssueSubleaseTokenSecret(ctx context.Context, account models.Account) (string, error) {
// issue each sublease token only once
t := d.NextSubleaseTokenSecretToIssue
d.NextSubleaseTokenSecretToIssue = ""
return t, nil
}
// ForfeitAccountName implements the keppel.FederationDriver interface.
func (d *FederationDriver) ForfeitAccountName(ctx context.Context, account models.Account) error {
if d.ForfeitFails {
return errors.New("ForfeitAccountName failing as requested")
}
return nil
}
// RecordExistingAccount implements the keppel.FederationDriver interface.
func (d *FederationDriver) RecordExistingAccount(ctx context.Context, account models.Account, now time.Time) error {
account.NextFederationAnnouncementAt = nil // this pointer type is poison for DeepEqual tests
d.RecordedAccounts = append(d.RecordedAccounts, AccountRecordedByFederationDriver{
Account: account,
RecordedAt: now,
})
return nil
}
// FindPrimaryAccount implements the keppel.FederationDriver interface.
func (d *FederationDriver) FindPrimaryAccount(ctx context.Context, accountName string) (string, error) {
for _, fd := range federationDriversForThisUnitTest {
for _, a := range fd.RecordedAccounts {
if a.Account.Name == accountName && a.Account.UpstreamPeerHostName == "" {
return fd.APIPublicHostName, nil
}
}
}
return "", keppel.ErrNoSuchPrimaryAccount
}