forked from TrueCloudLab/frostfs-sdk-go
73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package pool
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import (
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"errors"
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"time"
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)
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// Statistic is metrics of the pool.
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type Statistic struct {
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overallErrors uint64
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nodes []NodeStatistic
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}
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// OverallErrors returns sum of errors on all connections. It doesn't decrease.
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func (s Statistic) OverallErrors() uint64 {
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return s.overallErrors
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}
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// Nodes returns list of nodes statistic.
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func (s Statistic) Nodes() []NodeStatistic {
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return s.nodes
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}
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// ErrUnknownNode indicate that node with current address is not found in list.
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var ErrUnknownNode = errors.New("unknown node")
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// Node returns NodeStatistic by node address.
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// If such node doesn't exist ErrUnknownNode error is returned.
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func (s Statistic) Node(address string) (*NodeStatistic, error) {
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for i := range s.nodes {
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if s.nodes[i].address == address {
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return &s.nodes[i], nil
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}
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}
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return nil, ErrUnknownNode
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}
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// NodeStatistic is metrics of certain connections.
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type NodeStatistic struct {
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address string
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latency time.Duration
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requests uint64
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overallErrors uint64
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currentErrors uint32
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}
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// OverallErrors returns all errors on current node.
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// This value never decreases.
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func (n NodeStatistic) OverallErrors() uint64 {
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return n.overallErrors
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}
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// CurrentErrors returns errors on current node.
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// This value is always less than 'errorThreshold' from InitParameters.
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func (n NodeStatistic) CurrentErrors() uint32 {
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return n.currentErrors
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}
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// Latency returns average latency for node request.
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func (n NodeStatistic) Latency() time.Duration {
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return n.latency
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}
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// Requests returns number of requests.
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func (n NodeStatistic) Requests() uint64 {
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return n.requests
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}
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// Address returns node endpoint address.
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func (n NodeStatistic) Address() string {
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return n.address
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}
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