imgproxy/vendor/github.com/newrelic/go-agent/internal/limits.go

package internal

import "time"

const (
	// app behavior

	// ConnectBackoffStart is the initial backoff time between unsuccessful connect
	// attempts.  It is doubled until the ConnectBackoffLimit is reached.
	// https://source.datanerd.us/agents/agent-specs/blob/master/Collector-Response-Handling.md#retries-and-backoffs
	ConnectBackoffStart = 15 * time.Second
	// ConnectBackoffLimit is the largest connect backoff possible.
	ConnectBackoffLimit = 240 * time.Second
	// HarvestPeriod is the period that collected data is sent to New Relic.
	HarvestPeriod = 60 * time.Second
	// CollectorTimeout is the timeout used in the client for communication
	// with New Relic's servers.
	CollectorTimeout = 20 * time.Second
	// AppDataChanSize is the size of the channel that contains data sent
	// the app processor.
	AppDataChanSize           = 200
	failedMetricAttemptsLimit = 5
	failedEventsAttemptsLimit = 10

	// transaction behavior
	maxStackTraceFrames = 100
	// MaxTxnErrors is the maximum number of errors captured per
	// transaction.
	MaxTxnErrors      = 5
	maxTxnSlowQueries = 10

	startingTxnTraceNodes = 16
	maxTxnTraceNodes      = 256

	// harvest data
	maxMetrics          = 2 * 1000
	maxCustomEvents     = 10 * 1000
	maxTxnEvents        = 10 * 1000
	maxRegularTraces    = 1
	maxSyntheticsTraces = 20
	maxErrorEvents      = 100
	maxHarvestErrors    = 20
	maxHarvestSlowSQLs  = 10
	maxSpanEvents       = 1000

	// attributes
	attributeKeyLengthLimit   = 255
	attributeValueLengthLimit = 255
	attributeUserLimit        = 64
	// AttributeErrorLimit limits the number of extra attributes that can be
	// provided when noticing an error.
	AttributeErrorLimit       = 32
	attributeAgentLimit       = 255 - (attributeUserLimit + AttributeErrorLimit)
	customEventAttributeLimit = 64

	// Limits affecting Config validation are found in the config package.

	// RuntimeSamplerPeriod is the period of the runtime sampler.  Runtime
	// metrics should not depend on the sampler period, but the period must
	// be the same across instances.  For that reason, this value should not
	// be changed without notifying customers that they must update all
	// instance simultaneously for valid runtime metrics.
	RuntimeSamplerPeriod = 60 * time.Second
)