token-server: Warmup some local caches in /_ah/warmup.

tokenserver/appengine/impl/certconfig/ca.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package certconfig
 
 import (
         "bytes"
         "crypto/x509"
         "encoding/gob"
@@ skipping 53 matching lines @@
 
 // ParseConfig parses proto message stored in Config.
 func (c *CA) ParseConfig() (*admin.CertificateAuthorityConfig, error) {
         msg := &admin.CertificateAuthorityConfig{}
         if err := proto.Unmarshal(c.Config, msg); err != nil {
                 return nil, err
         }
         return msg, nil
 }
 
+// ListCAs returns names of all currently active CAs, in no particular order.
+func ListCAs(c context.Context) ([]string, error) {

[Vadim Sh., 2017/03/29 21:12:57]

this is just moved from rpc_list_cas.go

+        keys := []*ds.Key{}
+        q := ds.NewQuery("CA").Eq("Removed", false).KeysOnly(true)
+        if err := ds.GetAll(c, q, &keys); err != nil {
+                return nil, errors.WrapTransient(err)
+        }
+        names := make([]string, len(keys))
+        for i, key := range keys {
+                names[i] = key.StringID()
+        }
+        return names, nil
+}
+
 // CAUniqueIDToCNMap is a singleton entity that stores a mapping between CA's
 // unique_id (specified in config) and its Common Name.
 //
 // It's loaded in memory in full and kept cached there (for 1 min).
 // See GetCAByUniqueID below.
 type CAUniqueIDToCNMap struct {
         _id int64 `gae:"$id,1"`
 
         GobEncodedMap []byte `gae:",noindex"` // gob-encoded map[int64]string
 }
@@ skipping 67 matching lines @@
 }
 
 func (m *idToCNmapper) getCAByUniqueID(c context.Context, id int64) (string, error) {
         val, err := m.mapping.Get(c)
         if err != nil {
                 return "", err
         }
         mapping := val.Value.(map[int64]string)
         return mapping[id], nil
 }