/
app_run.go
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/
app_run.go
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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package newrelic
import (
"encoding/json"
"strings"
"sync"
"time"
"github.com/newrelic/go-agent/v3/internal"
)
// appRun contains information regarding a single connection session with the
// collector. It is immutable after creation at application connect.
type appRun struct {
Reply *internal.ConnectReply
// AttributeConfig is calculated on every connect since it depends on
// the security policies.
AttributeConfig *attributeConfig
Config config
// firstAppName is the value of Config.AppName up to the first semicolon.
firstAppName string
adaptiveSampler *adaptiveSampler
// rulesCache caches the results of creating transaction names. It
// exists here since it is specific to a set of rules and is shared
// between transactions.
rulesCache *rulesCache
// harvestConfig contains configuration related to event limits and
// flexible harvest periods. This field is created once at appRun
// creation.
harvestConfig harvestConfig
// Error code caches for faster lookups O(1)
ignoreErrorCodesCache map[int]bool
expectErrorCodesCache map[int]bool
mu sync.RWMutex
}
const (
txnNameCacheLimit = 40
)
func newAppRun(config config, reply *internal.ConnectReply) *appRun {
run := &appRun{
Reply: reply,
AttributeConfig: createAttributeConfig(config, reply.SecurityPolicies.AttributesInclude.Enabled()),
Config: config,
rulesCache: newRulesCache(txnNameCacheLimit),
ignoreErrorCodesCache: make(map[int]bool),
expectErrorCodesCache: make(map[int]bool),
}
// Overwrite local settings with any server-side-config settings
// present. NOTE! This requires that the Config provided to this
// function is a value and not a pointer: We do not want to change the
// input Config with values particular to this connection.
if v := run.Reply.ServerSideConfig.TransactionTracerEnabled; v != nil {
run.Config.TransactionTracer.Enabled = *v
}
if v := run.Reply.ServerSideConfig.ErrorCollectorEnabled; v != nil {
run.Config.ErrorCollector.Enabled = *v
}
if v := run.Reply.ServerSideConfig.CrossApplicationTracerEnabled; v != nil {
run.Config.CrossApplicationTracer.Enabled = *v
}
if v := run.Reply.ServerSideConfig.TransactionTracerThreshold; v != nil {
switch val := v.(type) {
case float64:
run.Config.TransactionTracer.Threshold.IsApdexFailing = false
run.Config.TransactionTracer.Threshold.Duration = internal.FloatSecondsToDuration(val)
case string:
if val == "apdex_f" {
run.Config.TransactionTracer.Threshold.IsApdexFailing = true
}
}
}
if v := run.Reply.ServerSideConfig.TransactionTracerStackTraceThreshold; v != nil {
run.Config.TransactionTracer.Segments.StackTraceThreshold = internal.FloatSecondsToDuration(*v)
}
if v := run.Reply.ServerSideConfig.ErrorCollectorIgnoreStatusCodes; v != nil {
run.Config.ErrorCollector.IgnoreStatusCodes = v
}
if run.Config.ErrorCollector.IgnoreStatusCodes != nil {
run.mu.Lock()
for _, errorCode := range run.Config.ErrorCollector.IgnoreStatusCodes {
run.ignoreErrorCodesCache[errorCode] = true
}
run.mu.Unlock()
}
if v := run.Reply.ServerSideConfig.ErrorCollectorExpectStatusCodes; v != nil {
run.Config.ErrorCollector.ExpectStatusCodes = v
}
if run.Config.ErrorCollector.IgnoreStatusCodes != nil {
run.mu.Lock()
for _, errorCode := range run.Config.ErrorCollector.ExpectStatusCodes {
run.expectErrorCodesCache[errorCode] = true
}
run.mu.Unlock()
}
if !run.Reply.CollectErrorEvents {
run.Config.ErrorCollector.CaptureEvents = false
}
if !run.Reply.CollectAnalyticsEvents {
run.Config.TransactionEvents.Enabled = false
}
if !run.Reply.CollectTraces {
run.Config.TransactionTracer.Enabled = false
run.Config.DatastoreTracer.SlowQuery.Enabled = false
}
if !run.Reply.CollectSpanEvents {
run.Config.SpanEvents.Enabled = false
}
// Distributed tracing takes priority over cross-app-tracing per:
// https://source.datanerd.us/agents/agent-specs/blob/master/Distributed-Tracing.md#distributed-trace-payload
if run.Config.DistributedTracer.Enabled {
run.Config.CrossApplicationTracer.Enabled = false
}
// Cache the first application name set on the config
run.firstAppName = strings.SplitN(config.AppName, ";", 2)[0]
run.adaptiveSampler = newAdaptiveSampler(
time.Duration(reply.SamplingTargetPeriodInSeconds)*time.Second,
reply.SamplingTarget,
time.Now())
if run.Reply.RunID != "" {
js, _ := json.Marshal(settings(run.Config.Config))
run.Config.Logger.Debug("final configuration", map[string]interface{}{
"config": jsonString(js),
})
}
run.harvestConfig = harvestConfig{
ReportPeriods: run.ReportPeriods(),
MaxTxnEvents: run.MaxTxnEvents(),
MaxCustomEvents: run.MaxCustomEvents(),
MaxErrorEvents: run.MaxErrorEvents(),
MaxSpanEvents: run.MaxSpanEvents(),
LoggingConfig: run.LoggingConfig(),
}
return run
}
func newPlaceholderAppRun(config config) *appRun {
reply := internal.ConnectReplyDefaults()
// Do no sampling if the app isn't connected:
reply.SamplingTarget = 0
return newAppRun(config, reply)
}
const (
// https://source.datanerd.us/agents/agent-specs/blob/master/Lambda.md#distributed-tracing
serverlessDefaultPrimaryAppID = "Unknown"
)
func newServerlessConnectReply(config config) *internal.ConnectReply {
reply := internal.ConnectReplyDefaults()
reply.ApdexThresholdSeconds = config.ServerlessMode.ApdexThreshold.Seconds()
reply.AccountID = config.ServerlessMode.AccountID
reply.TrustedAccountKey = config.ServerlessMode.TrustedAccountKey
reply.PrimaryAppID = config.ServerlessMode.PrimaryAppID
if reply.TrustedAccountKey == "" {
// The trust key does not need to be provided by customers whose
// account ID is the same as the trust key.
reply.TrustedAccountKey = reply.AccountID
}
if reply.PrimaryAppID == "" {
reply.PrimaryAppID = serverlessDefaultPrimaryAppID
}
// https://source.datanerd.us/agents/agent-specs/blob/master/Lambda.md#adaptive-sampling
reply.SamplingTargetPeriodInSeconds = 60
reply.SamplingTarget = 10
return reply
}
func (run *appRun) responseCodeIsError(code int) bool {
// Response codes below 100 are allowed to be errors to support gRPC.
if code < 400 && code >= 100 {
return false
}
run.mu.RLock()
defer run.mu.RUnlock()
return !run.ignoreErrorCodesCache[code]
}
func (run *appRun) responseCodeIsExpected(code int) bool {
run.mu.RLock()
defer run.mu.RUnlock()
return run.expectErrorCodesCache[code]
}
func (run *appRun) txnTraceThreshold(apdexThreshold time.Duration) time.Duration {
if run.Config.TransactionTracer.Threshold.IsApdexFailing {
return apdexFailingThreshold(apdexThreshold)
}
return run.Config.TransactionTracer.Threshold.Duration
}
func (run *appRun) ptrTxnEvents() *uint { return run.Reply.EventData.Limits.TxnEvents }
func (run *appRun) ptrCustomEvents() *uint { return run.Reply.EventData.Limits.CustomEvents }
func (run *appRun) ptrLogEvents() *uint { return run.Reply.EventData.Limits.LogEvents }
func (run *appRun) ptrErrorEvents() *uint { return run.Reply.EventData.Limits.ErrorEvents }
func (run *appRun) ptrSpanEvents() *uint { return run.Reply.SpanEventHarvestConfig.HarvestLimit }
func (run *appRun) MaxTxnEvents() int { return run.limit(run.Config.maxTxnEvents(), run.ptrTxnEvents) }
func (run *appRun) MaxCustomEvents() int {
return run.limit(internal.MaxCustomEvents, run.ptrCustomEvents)
}
func (run *appRun) MaxLogEvents() int {
return run.limit(internal.MaxLogEvents, run.ptrLogEvents)
}
func (run *appRun) MaxErrorEvents() int {
return run.limit(internal.MaxErrorEvents, run.ptrErrorEvents)
}
func (run *appRun) LoggingConfig() (config loggingConfig) {
logging := run.Config.ApplicationLogging
config.loggingEnabled = logging.Enabled
config.collectEvents = logging.Enabled && logging.Forwarding.Enabled && !run.Config.HighSecurity
config.maxLogEvents = run.MaxLogEvents()
config.collectMetrics = logging.Enabled && logging.Metrics.Enabled
config.localEnrichment = logging.Enabled && logging.LocalDecorating.Enabled
return config
}
// MaxSpanEvents returns the reservoir limit for collected span events,
// which will be the default or the user's configured size (if any), but
// may be capped to the maximum allowed by the collector.
func (run *appRun) MaxSpanEvents() int {
return run.limit(internal.MaxSpanEvents, run.ptrSpanEvents)
}
func (run *appRun) limit(dflt int, field func() *uint) int {
if field() != nil {
return int(*field())
}
return dflt
}
func (run *appRun) ReportPeriods() map[harvestTypes]time.Duration {
fixed := harvestMetricsTraces
configurable := harvestTypes(0)
for tp, fn := range map[harvestTypes]func() *uint{
harvestTxnEvents: run.ptrTxnEvents,
harvestCustomEvents: run.ptrCustomEvents,
harvestLogEvents: run.ptrLogEvents,
harvestErrorEvents: run.ptrErrorEvents,
harvestSpanEvents: run.ptrSpanEvents,
} {
if run != nil && fn() != nil {
configurable |= tp
} else {
fixed |= tp
}
}
return map[harvestTypes]time.Duration{
configurable: run.Reply.ConfigurablePeriod(),
fixed: fixedHarvestPeriod,
}
}
func (run *appRun) createTransactionName(input string, isWeb bool) string {
if name := run.rulesCache.find(input, isWeb); name != "" {
return name
}
name := internal.CreateFullTxnName(input, run.Reply, isWeb)
if name != "" {
// Note that we don't cache situations where the rules say
// ignore. It would increase complication (we would need to
// disambiguate not-found vs ignore). Also, the ignore code
// path is probably extremely uncommon.
run.rulesCache.set(input, isWeb, name)
}
return name
}