frostfs-sdk-go/pool/statistic.go

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package pool
import (
"errors"
"time"
)
// Statistic is metrics of the pool.
type Statistic struct {
overallErrors uint64
nodes []NodeStatistic
currentNodes []string
}
// OverallErrors returns sum of errors on all connections. It doesn't decrease.
func (s Statistic) OverallErrors() uint64 {
return s.overallErrors
}
// Nodes returns list of nodes statistic.
func (s Statistic) Nodes() []NodeStatistic {
return s.nodes
}
// CurrentNodes returns list of nodes of inner pool that has at least one healthy node.
// These nodes have the same and the highest priority among the other healthy nodes.
func (s Statistic) CurrentNodes() []string {
return s.currentNodes
}
// ErrUnknownNode indicate that node with current address is not found in list.
var ErrUnknownNode = errors.New("unknown node")
// Node returns NodeStatistic by node address.
// If such node doesn't exist ErrUnknownNode error is returned.
func (s Statistic) Node(address string) (*NodeStatistic, error) {
for i := range s.nodes {
if s.nodes[i].address == address {
return &s.nodes[i], nil
}
}
return nil, ErrUnknownNode
}
// NodeStatistic is metrics of certain connections.
type NodeStatistic struct {
address string
methods []statusSnapshot
overallErrors uint64
currentErrors uint32
}
// OverallErrors returns all errors on current node.
// This value never decreases.
func (n NodeStatistic) OverallErrors() uint64 {
return n.overallErrors
}
// CurrentErrors returns errors on current node.
// This value is always less than 'errorThreshold' from InitParameters.
func (n NodeStatistic) CurrentErrors() uint32 {
return n.currentErrors
}
// Requests returns number of requests.
func (n NodeStatistic) Requests() (requests uint64) {
for _, val := range n.methods {
requests += val.allRequests
}
return requests
}
// Address returns node endpoint address.
func (n NodeStatistic) Address() string {
return n.address
}
// AverageGetBalance returns average time to perform BalanceGet request.
func (n NodeStatistic) AverageGetBalance() time.Duration {
return n.averageTime(methodBalanceGet)
}
// AveragePutContainer returns average time to perform ContainerPut request.
func (n NodeStatistic) AveragePutContainer() time.Duration {
return n.averageTime(methodContainerPut)
}
// AverageGetContainer returns average time to perform ContainerGet request.
func (n NodeStatistic) AverageGetContainer() time.Duration {
return n.averageTime(methodContainerGet)
}
// AverageListContainer returns average time to perform ContainerList request.
func (n NodeStatistic) AverageListContainer() time.Duration {
return n.averageTime(methodContainerList)
}
// AverageDeleteContainer returns average time to perform ContainerDelete request.
func (n NodeStatistic) AverageDeleteContainer() time.Duration {
return n.averageTime(methodContainerDelete)
}
// AverageGetContainerEACL returns average time to perform ContainerEACL request.
func (n NodeStatistic) AverageGetContainerEACL() time.Duration {
return n.averageTime(methodContainerEACL)
}
// AverageSetContainerEACL returns average time to perform ContainerSetEACL request.
func (n NodeStatistic) AverageSetContainerEACL() time.Duration {
return n.averageTime(methodContainerSetEACL)
}
// AverageEndpointInfo returns average time to perform EndpointInfo request.
func (n NodeStatistic) AverageEndpointInfo() time.Duration {
return n.averageTime(methodEndpointInfo)
}
// AverageNetworkInfo returns average time to perform NetworkInfo request.
func (n NodeStatistic) AverageNetworkInfo() time.Duration {
return n.averageTime(methodNetworkInfo)
}
// AveragePutObject returns average time to perform ObjectPut request.
func (n NodeStatistic) AveragePutObject() time.Duration {
return n.averageTime(methodObjectPut)
}
// AverageDeleteObject returns average time to perform ObjectDelete request.
func (n NodeStatistic) AverageDeleteObject() time.Duration {
return n.averageTime(methodObjectDelete)
}
// AverageGetObject returns average time to perform ObjectGet request.
func (n NodeStatistic) AverageGetObject() time.Duration {
return n.averageTime(methodObjectGet)
}
// AverageHeadObject returns average time to perform ObjectHead request.
func (n NodeStatistic) AverageHeadObject() time.Duration {
return n.averageTime(methodObjectHead)
}
// AverageRangeObject returns average time to perform ObjectRange request.
func (n NodeStatistic) AverageRangeObject() time.Duration {
return n.averageTime(methodObjectRange)
}
// AverageCreateSession returns average time to perform SessionCreate request.
func (n NodeStatistic) AverageCreateSession() time.Duration {
return n.averageTime(methodSessionCreate)
}
func (n NodeStatistic) averageTime(method MethodIndex) time.Duration {
stat := n.methods[method]
if stat.allRequests == 0 {
return 0
}
return time.Duration(stat.allTime / stat.allRequests)
}