mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-15 01:34:05 +00:00
916ec63af6
This is a new revision of the discovery server. Relevant changes and non-changes: - Protocol towards clients is unchanged. - Recommended large scale design is still to be deployed nehind nginx (I tested, and it's still a lot faster at terminating TLS). - Database backend is leveldb again, only. It scales enough, is easy to setup, and we don't need any backend to take care of. - Server supports replication. This is a simple TCP channel - protect it with a firewall when deploying over the internet. (We deploy this within the same datacenter, and with firewall.) Any incoming client announces are sent over the replication channel(s) to other peer discosrvs. Incoming replication changes are applied to the database as if they came from clients, but without the TLS/certificate overhead. - Metrics are exposed using the prometheus library, when enabled. - The database values and replication protocol is protobuf, because JSON was quite CPU intensive when I tried that and benchmarked it. - The "Retry-After" value for failed lookups gets slowly increased from a default of 120 seconds, by 5 seconds for each failed lookup, independently by each discosrv. This lowers the query load over time for clients that are never seen. The Retry-After maxes out at 3600 after a couple of weeks of this increase. The number of failed lookups is stored in the database, now and then (avoiding making each lookup a database put). All in all this means clients can be pointed towards a cluster using just multiple A / AAAA records to gain both load sharing and redundancy (if one is down, clients will talk to the remaining ones). GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4648
84 lines
3.4 KiB
Protocol Buffer
84 lines
3.4 KiB
Protocol Buffer
// Protocol Buffers for Go with Gadgets
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//
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// Copyright (c) 2013, The GoGo Authors. All rights reserved.
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// http://github.com/gogo/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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syntax = "proto2";
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package required;
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import "github.com/gogo/protobuf/gogoproto/gogo.proto";
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option (gogoproto.marshaler_all) = true;
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option (gogoproto.sizer_all) = true;
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option (gogoproto.unmarshaler_all) = true;
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option (gogoproto.populate_all) = true;
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message RequiredExample {
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required string theRequiredString = 1;
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optional string theOptionalString = 2;
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repeated string theRepeatedStrings = 3;
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}
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message NidOptNative {
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required double Field1 = 1 [(gogoproto.nullable) = false];
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required float Field2 = 2 [(gogoproto.nullable) = false];
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required int32 Field3 = 3 [(gogoproto.nullable) = false];
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required int64 Field4 = 4 [(gogoproto.nullable) = false];
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required uint32 Field5 = 5 [(gogoproto.nullable) = false];
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required uint64 Field6 = 6 [(gogoproto.nullable) = false];
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required sint32 Field7 = 7 [(gogoproto.nullable) = false];
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required sint64 Field8 = 8 [(gogoproto.nullable) = false];
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required fixed32 Field9 = 9 [(gogoproto.nullable) = false];
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required sfixed32 Field10 = 10 [(gogoproto.nullable) = false];
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required fixed64 Field11 = 11 [(gogoproto.nullable) = false];
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required sfixed64 Field12 = 12 [(gogoproto.nullable) = false];
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required bool Field13 = 13 [(gogoproto.nullable) = false];
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required string Field14 = 14 [(gogoproto.nullable) = false];
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required bytes Field15 = 15 [(gogoproto.nullable) = false];
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}
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message NinOptNative {
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required double Field1 = 1;
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required float Field2 = 2;
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required int32 Field3 = 3;
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required int64 Field4 = 4;
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required uint32 Field5 = 5;
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required uint64 Field6 = 6;
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required sint32 Field7 = 7;
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required sint64 Field8 = 8;
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required fixed32 Field9 = 9;
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required sfixed32 Field10 = 10;
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required fixed64 Field11 = 11;
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required sfixed64 Field12 = 12;
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required bool Field13 = 13;
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required string Field14 = 14;
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required bytes Field15 = 15;
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}
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message NestedNinOptNative {
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repeated NinOptNative NestedNinOpts = 1;
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}
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