blob: 14e364e0575cf81e2038dbdeab3e9a29b596342b [file] [log] [blame]
// Copyright 2017 The LUCI Authors.
//
// 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 serviceaccounts
import (
"context"
"net"
"time"
"google.golang.org/appengine"
"go.chromium.org/luci/appengine/bqlog"
"go.chromium.org/luci/common/bq"
"go.chromium.org/luci/common/proto/google"
"go.chromium.org/luci/tokenserver/api"
"go.chromium.org/luci/tokenserver/api/admin/v1"
bqpb "go.chromium.org/luci/tokenserver/api/bq"
"go.chromium.org/luci/tokenserver/api/minter/v1"
"go.chromium.org/luci/tokenserver/appengine/impl/utils"
)
var oauthTokensLog = bqlog.Log{
QueueName: "bqlog-oauth-tokens", // see queues.yaml
DatasetID: "tokens", // see bq/README.md
TableID: "oauth_tokens", // see bq/tables/oauth_tokens.schema
DumpEntriesToLogger: true,
DryRun: appengine.IsDevAppServer(),
}
// MintedOAuthTokenInfo is passed to LogOAuthToken.
//
// It carries all information about the returned token.
type MintedOAuthTokenInfo struct {
RequestedAt time.Time // when the RPC happened
Request *minter.MintOAuthTokenViaGrantRequest // RPC input, as is
Response *minter.MintOAuthTokenViaGrantResponse // RPC output, as is
GrantBody *tokenserver.OAuthTokenGrantBody // deserialized grant
ConfigRev string // revision of the service_accounts.cfg used
Rule *admin.ServiceAccountRule // the particular rule used to authorize the request
PeerIP net.IP // caller IP address
RequestID string // GAE request ID that handled the RPC
AuthDBRev int64 // revision of groups database (or 0 if unknown)
}
// toBigQueryMessage returns a message to upload to BigQuery.
func (i *MintedOAuthTokenInfo) toBigQueryMessage() *bqpb.OAuthToken {
return &bqpb.OAuthToken{
Fingerprint: utils.TokenFingerprint(i.Response.AccessToken),
GrantFingerprint: utils.TokenFingerprint(i.Request.GrantToken),
ServiceAccount: i.GrantBody.ServiceAccount,
OauthScopes: i.Request.OauthScope,
ProxyIdentity: i.GrantBody.Proxy,
EndUserIdentity: i.GrantBody.EndUser,
// Note: we are not using 'issued_at' because the returned token is often
// fetched from cache (and thus it was issued some time ago, not now). This
// timestamp is not preserved in the cache, since it can be calculated from
// 'expiration' if necessary.
RequestedAt: google.NewTimestamp(i.RequestedAt),
Expiration: i.Response.Expiry,
// Information supplied by the caller.
AuditTags: i.Request.AuditTags,
// Information about the service account rule used.
ConfigRev: i.ConfigRev,
ConfigRule: i.Rule.Name,
// Information about the request handler environment.
PeerIp: i.PeerIP.String(),
ServiceVersion: i.Response.ServiceVersion,
GaeRequestId: i.RequestID,
AuthDbRev: i.AuthDBRev,
}
}
// LogOAuthToken records information about the OAuth token in the BigQuery.
//
// The token itself is not logged. Only first 16 bytes of its SHA256 hash
// (aka 'fingerprint') is. It is used only to identify this particular token in
// logs.
//
// On dev server, logs to the GAE log only, not to BigQuery (to avoid
// accidentally pushing fake data to real BigQuery dataset).
func LogOAuthToken(c context.Context, i *MintedOAuthTokenInfo) error {
return oauthTokensLog.Insert(c, &bq.Row{
Message: i.toBigQueryMessage(),
})
}
// FlushOAuthTokensLog sends all buffered logged tokens to BigQuery.
//
// It is fine to call FlushOAuthTokensLog concurrently from multiple request
// handlers, if necessary (it will effectively parallelize the flush).
func FlushOAuthTokensLog(c context.Context) error {
_, err := oauthTokensLog.Flush(c)
return err
}