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
365 lines
8.9 KiB
Go
365 lines
8.9 KiB
Go
// Code generated by protoc-gen-go.
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// source: metrics.proto
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// DO NOT EDIT!
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/*
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Package io_prometheus_client is a generated protocol buffer package.
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It is generated from these files:
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metrics.proto
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It has these top-level messages:
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LabelPair
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Gauge
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Counter
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Quantile
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Summary
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Untyped
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Histogram
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Bucket
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Metric
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MetricFamily
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*/
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package io_prometheus_client
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import proto "github.com/golang/protobuf/proto"
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import math "math"
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto.Marshal
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var _ = math.Inf
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type MetricType int32
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const (
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MetricType_COUNTER MetricType = 0
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MetricType_GAUGE MetricType = 1
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MetricType_SUMMARY MetricType = 2
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MetricType_UNTYPED MetricType = 3
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MetricType_HISTOGRAM MetricType = 4
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)
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var MetricType_name = map[int32]string{
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0: "COUNTER",
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1: "GAUGE",
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2: "SUMMARY",
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3: "UNTYPED",
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4: "HISTOGRAM",
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}
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var MetricType_value = map[string]int32{
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"COUNTER": 0,
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"GAUGE": 1,
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"SUMMARY": 2,
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"UNTYPED": 3,
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"HISTOGRAM": 4,
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}
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func (x MetricType) Enum() *MetricType {
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p := new(MetricType)
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*p = x
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return p
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}
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func (x MetricType) String() string {
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return proto.EnumName(MetricType_name, int32(x))
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}
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func (x *MetricType) UnmarshalJSON(data []byte) error {
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value, err := proto.UnmarshalJSONEnum(MetricType_value, data, "MetricType")
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if err != nil {
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return err
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}
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*x = MetricType(value)
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return nil
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}
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type LabelPair struct {
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Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
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Value *string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *LabelPair) Reset() { *m = LabelPair{} }
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func (m *LabelPair) String() string { return proto.CompactTextString(m) }
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func (*LabelPair) ProtoMessage() {}
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func (m *LabelPair) GetName() string {
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if m != nil && m.Name != nil {
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return *m.Name
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}
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return ""
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}
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func (m *LabelPair) GetValue() string {
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if m != nil && m.Value != nil {
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return *m.Value
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}
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return ""
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}
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type Gauge struct {
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Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Gauge) Reset() { *m = Gauge{} }
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func (m *Gauge) String() string { return proto.CompactTextString(m) }
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func (*Gauge) ProtoMessage() {}
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func (m *Gauge) GetValue() float64 {
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if m != nil && m.Value != nil {
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return *m.Value
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}
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return 0
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}
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type Counter struct {
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Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Counter) Reset() { *m = Counter{} }
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func (m *Counter) String() string { return proto.CompactTextString(m) }
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func (*Counter) ProtoMessage() {}
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func (m *Counter) GetValue() float64 {
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if m != nil && m.Value != nil {
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return *m.Value
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}
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return 0
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}
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type Quantile struct {
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Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"`
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Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Quantile) Reset() { *m = Quantile{} }
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func (m *Quantile) String() string { return proto.CompactTextString(m) }
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func (*Quantile) ProtoMessage() {}
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func (m *Quantile) GetQuantile() float64 {
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if m != nil && m.Quantile != nil {
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return *m.Quantile
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}
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return 0
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}
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func (m *Quantile) GetValue() float64 {
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if m != nil && m.Value != nil {
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return *m.Value
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}
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return 0
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}
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type Summary struct {
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SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"`
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SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"`
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Quantile []*Quantile `protobuf:"bytes,3,rep,name=quantile" json:"quantile,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Summary) Reset() { *m = Summary{} }
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func (m *Summary) String() string { return proto.CompactTextString(m) }
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func (*Summary) ProtoMessage() {}
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func (m *Summary) GetSampleCount() uint64 {
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if m != nil && m.SampleCount != nil {
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return *m.SampleCount
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}
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return 0
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}
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func (m *Summary) GetSampleSum() float64 {
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if m != nil && m.SampleSum != nil {
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return *m.SampleSum
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}
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return 0
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}
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func (m *Summary) GetQuantile() []*Quantile {
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if m != nil {
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return m.Quantile
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}
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return nil
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}
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type Untyped struct {
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Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Untyped) Reset() { *m = Untyped{} }
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func (m *Untyped) String() string { return proto.CompactTextString(m) }
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func (*Untyped) ProtoMessage() {}
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func (m *Untyped) GetValue() float64 {
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if m != nil && m.Value != nil {
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return *m.Value
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}
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return 0
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}
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type Histogram struct {
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SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"`
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SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"`
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Bucket []*Bucket `protobuf:"bytes,3,rep,name=bucket" json:"bucket,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Histogram) Reset() { *m = Histogram{} }
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func (m *Histogram) String() string { return proto.CompactTextString(m) }
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func (*Histogram) ProtoMessage() {}
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func (m *Histogram) GetSampleCount() uint64 {
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if m != nil && m.SampleCount != nil {
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return *m.SampleCount
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}
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return 0
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}
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func (m *Histogram) GetSampleSum() float64 {
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if m != nil && m.SampleSum != nil {
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return *m.SampleSum
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}
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return 0
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}
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func (m *Histogram) GetBucket() []*Bucket {
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if m != nil {
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return m.Bucket
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}
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return nil
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}
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type Bucket struct {
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CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count" json:"cumulative_count,omitempty"`
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UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound" json:"upper_bound,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Bucket) Reset() { *m = Bucket{} }
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func (m *Bucket) String() string { return proto.CompactTextString(m) }
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func (*Bucket) ProtoMessage() {}
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func (m *Bucket) GetCumulativeCount() uint64 {
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if m != nil && m.CumulativeCount != nil {
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return *m.CumulativeCount
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}
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return 0
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}
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func (m *Bucket) GetUpperBound() float64 {
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if m != nil && m.UpperBound != nil {
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return *m.UpperBound
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}
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return 0
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}
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type Metric struct {
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Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
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Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"`
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Counter *Counter `protobuf:"bytes,3,opt,name=counter" json:"counter,omitempty"`
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Summary *Summary `protobuf:"bytes,4,opt,name=summary" json:"summary,omitempty"`
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Untyped *Untyped `protobuf:"bytes,5,opt,name=untyped" json:"untyped,omitempty"`
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Histogram *Histogram `protobuf:"bytes,7,opt,name=histogram" json:"histogram,omitempty"`
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TimestampMs *int64 `protobuf:"varint,6,opt,name=timestamp_ms" json:"timestamp_ms,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *Metric) Reset() { *m = Metric{} }
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func (m *Metric) String() string { return proto.CompactTextString(m) }
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func (*Metric) ProtoMessage() {}
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func (m *Metric) GetLabel() []*LabelPair {
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if m != nil {
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return m.Label
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}
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return nil
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}
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func (m *Metric) GetGauge() *Gauge {
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if m != nil {
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return m.Gauge
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}
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return nil
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}
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func (m *Metric) GetCounter() *Counter {
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if m != nil {
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return m.Counter
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}
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return nil
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}
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func (m *Metric) GetSummary() *Summary {
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if m != nil {
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return m.Summary
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}
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return nil
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}
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func (m *Metric) GetUntyped() *Untyped {
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if m != nil {
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return m.Untyped
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}
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return nil
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}
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func (m *Metric) GetHistogram() *Histogram {
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if m != nil {
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return m.Histogram
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}
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return nil
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}
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func (m *Metric) GetTimestampMs() int64 {
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if m != nil && m.TimestampMs != nil {
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return *m.TimestampMs
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}
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return 0
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}
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type MetricFamily struct {
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Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
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Help *string `protobuf:"bytes,2,opt,name=help" json:"help,omitempty"`
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Type *MetricType `protobuf:"varint,3,opt,name=type,enum=io.prometheus.client.MetricType" json:"type,omitempty"`
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Metric []*Metric `protobuf:"bytes,4,rep,name=metric" json:"metric,omitempty"`
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XXX_unrecognized []byte `json:"-"`
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}
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func (m *MetricFamily) Reset() { *m = MetricFamily{} }
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func (m *MetricFamily) String() string { return proto.CompactTextString(m) }
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func (*MetricFamily) ProtoMessage() {}
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func (m *MetricFamily) GetName() string {
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if m != nil && m.Name != nil {
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return *m.Name
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}
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return ""
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}
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func (m *MetricFamily) GetHelp() string {
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if m != nil && m.Help != nil {
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return *m.Help
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}
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return ""
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}
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func (m *MetricFamily) GetType() MetricType {
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if m != nil && m.Type != nil {
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return *m.Type
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}
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return MetricType_COUNTER
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}
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func (m *MetricFamily) GetMetric() []*Metric {
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if m != nil {
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return m.Metric
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}
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return nil
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}
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func init() {
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proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
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}
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