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// Copyright 2018 Google LLC. All Rights Reserved.
//
// 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.
syntax = "proto3";
option go_package = "github.com/google/certificate-transparency-go/trillian/migrillian/configpb";
package configpb;
import "trillian/ctfe/configpb/config.proto";
import "crypto/keyspb/keyspb.proto";
// IdentityFunction specifies how Trillian identity hash is computed.
enum IdentityFunction {
UNKNOWN_IDENTITY_FUNCTION = 0;
// Returns SHA256 hash of the certificate DER. This is the same function that
// CTFE uses when submitting add-[pre-]chain entries to Trillian.
//
// For example, it can be used when migrating a CT log to Trillian. Using the
// same function as CTFE makes any newly submitted entries compatible with the
// ones that migrated from the source log.
SHA256_CERT_DATA = 1;
// Returns SHA256 hash of the leaf index.
//
// For example, this function can be used for mirroring CT logs. Since the
// source logs might have duplicates of different kinds (depends on the
// operator), this function allows storing them all (unlike SHA256_CERT_DATA).
// Note that the CTFE log must stay read-only (mirror), as CTFE's identity
// hash is incompatible.
SHA256_LEAF_INDEX = 2;
}
// MigrationConfig describes the configuration options for a single CT log
// migration instance.
message MigrationConfig {
// The URI of the source CT log, e.g. "https://ct.googleapis.com/pilot".
string source_uri = 1;
// The public key of the source log.
keyspb.PublicKey public_key = 2;
// The name of the backend which this log migrates to. The name must be one of
// those defined in the LogBackendSet.
//
// Deprecated. TODO(pavelkalinnikov): Remove it.
string log_backend_name = 3 [deprecated=true];
// The ID of a Trillian PREORDERED_LOG tree that stores the log data.
int64 log_id = 4;
// Max number of entries per get-entries request from the source log.
int32 batch_size = 5;
// Determines whether the migration should run continuously, i.e. watch and
// follow the updates of the source log's STH. For example, this mode can be
// used to support a mirror CT log.
bool is_continuous = 6;
// The log entry index to start fetching at. If negative, then it is assumed
// equal to the current Trillian tree size.
// Ignored in continuous mode which starts at the point where it stopped (e.g.
// the current Trillian tree size in a simple case).
int64 start_index = 7;
// The log index to end fetching at, non-inclusive. If zero, fetch up to the
// source log's current STH. Ignored in continuous mode which keeps updating
// STH and fetching up to that.
int64 end_index = 8;
// The number of parallel get-entries fetchers. Assumed equal to 1 if not
// specified.
int32 num_fetchers = 9;
// The number of parallel workers submitting entries to Trillian. Assumed
// equal to 1 if not specified.
int32 num_submitters = 10;
// Max number of batches in fetchers->submitters channel.
int32 channel_size = 11;
// The function that computes LeafIdentityHash for Trillian log entries.
IdentityFunction identity_function = 12;
// If set to false (by default), then Migrillian verifies that the tree as
// seen by Trillian is consistent with the current STH of the source CT log.
// It invokes the get-sth-consistency endpoint (section 4.4 of RFC 6962) with
// the corresponding tree sizes, and verifies the returned proof.
bool no_consistency_check = 13;
// TODO(pavelkalinnikov): Fetch and push quotas, priorities, etc.
}
// MigrationConfigSet is a set of MigrationConfig messages.
message MigrationConfigSet {
repeated MigrationConfig config = 1;
}
// MigrillianConfig holds configuration for multiple migration / mirroring jobs.
message MigrillianConfig {
// The set of backends that this configuration will use to send requests to.
// The names of the backends in the LogBackendSet must all be distinct.
//
// Deprecated. TODO(pavelkalinnikov): Remove it.
LogBackendSet backends = 1 [deprecated=true];
// The set of migrations that will use the above backends. All the protos in
// it must set a valid log_backend_name for the config to be usable.
MigrationConfigSet migration_configs = 2;
}
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