mirror of
https://github.com/octoleo/syncthing.git
synced 2024-09-20 13:49:02 +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
134 lines
4.4 KiB
Protocol Buffer
134 lines
4.4 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 gogoproto;
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import "google/protobuf/descriptor.proto";
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option java_package = "com.google.protobuf";
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option java_outer_classname = "GoGoProtos";
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option go_package = "github.com/gogo/protobuf/gogoproto";
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extend google.protobuf.EnumOptions {
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optional bool goproto_enum_prefix = 62001;
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optional bool goproto_enum_stringer = 62021;
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optional bool enum_stringer = 62022;
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optional string enum_customname = 62023;
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optional bool enumdecl = 62024;
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}
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extend google.protobuf.EnumValueOptions {
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optional string enumvalue_customname = 66001;
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}
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extend google.protobuf.FileOptions {
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optional bool goproto_getters_all = 63001;
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optional bool goproto_enum_prefix_all = 63002;
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optional bool goproto_stringer_all = 63003;
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optional bool verbose_equal_all = 63004;
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optional bool face_all = 63005;
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optional bool gostring_all = 63006;
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optional bool populate_all = 63007;
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optional bool stringer_all = 63008;
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optional bool onlyone_all = 63009;
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optional bool equal_all = 63013;
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optional bool description_all = 63014;
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optional bool testgen_all = 63015;
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optional bool benchgen_all = 63016;
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optional bool marshaler_all = 63017;
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optional bool unmarshaler_all = 63018;
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optional bool stable_marshaler_all = 63019;
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optional bool sizer_all = 63020;
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optional bool goproto_enum_stringer_all = 63021;
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optional bool enum_stringer_all = 63022;
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optional bool unsafe_marshaler_all = 63023;
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optional bool unsafe_unmarshaler_all = 63024;
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optional bool goproto_extensions_map_all = 63025;
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optional bool goproto_unrecognized_all = 63026;
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optional bool gogoproto_import = 63027;
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optional bool protosizer_all = 63028;
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optional bool compare_all = 63029;
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optional bool typedecl_all = 63030;
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optional bool enumdecl_all = 63031;
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optional bool goproto_registration = 63032;
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}
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extend google.protobuf.MessageOptions {
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optional bool goproto_getters = 64001;
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optional bool goproto_stringer = 64003;
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optional bool verbose_equal = 64004;
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optional bool face = 64005;
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optional bool gostring = 64006;
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optional bool populate = 64007;
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optional bool stringer = 67008;
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optional bool onlyone = 64009;
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optional bool equal = 64013;
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optional bool description = 64014;
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optional bool testgen = 64015;
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optional bool benchgen = 64016;
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optional bool marshaler = 64017;
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optional bool unmarshaler = 64018;
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optional bool stable_marshaler = 64019;
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optional bool sizer = 64020;
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optional bool unsafe_marshaler = 64023;
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optional bool unsafe_unmarshaler = 64024;
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optional bool goproto_extensions_map = 64025;
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optional bool goproto_unrecognized = 64026;
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optional bool protosizer = 64028;
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optional bool compare = 64029;
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optional bool typedecl = 64030;
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}
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extend google.protobuf.FieldOptions {
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optional bool nullable = 65001;
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optional bool embed = 65002;
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optional string customtype = 65003;
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optional string customname = 65004;
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optional string jsontag = 65005;
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optional string moretags = 65006;
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optional string casttype = 65007;
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optional string castkey = 65008;
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optional string castvalue = 65009;
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optional bool stdtime = 65010;
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optional bool stdduration = 65011;
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}
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