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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package newrelic
import (
"encoding/json"
"fmt"
"net/http"
"os"
"strings"
"github.com/newrelic/go-agent/internal"
"github.com/newrelic/go-agent/internal/logger"
"github.com/newrelic/go-agent/internal/utilization"
)
func copyDestConfig(c AttributeDestinationConfig) AttributeDestinationConfig {
cp := c
if nil != c.Include {
cp.Include = make([]string, len(c.Include))
copy(cp.Include, c.Include)
}
if nil != c.Exclude {
cp.Exclude = make([]string, len(c.Exclude))
copy(cp.Exclude, c.Exclude)
}
return cp
}
func copyConfigReferenceFields(cfg Config) Config {
cp := cfg
if nil != cfg.Labels {
cp.Labels = make(map[string]string, len(cfg.Labels))
for key, val := range cfg.Labels {
cp.Labels[key] = val
}
}
if nil != cfg.ErrorCollector.IgnoreStatusCodes {
ignored := make([]int, len(cfg.ErrorCollector.IgnoreStatusCodes))
copy(ignored, cfg.ErrorCollector.IgnoreStatusCodes)
cp.ErrorCollector.IgnoreStatusCodes = ignored
}
cp.Attributes = copyDestConfig(cfg.Attributes)
cp.ErrorCollector.Attributes = copyDestConfig(cfg.ErrorCollector.Attributes)
cp.TransactionEvents.Attributes = copyDestConfig(cfg.TransactionEvents.Attributes)
cp.TransactionTracer.Attributes = copyDestConfig(cfg.TransactionTracer.Attributes)
cp.BrowserMonitoring.Attributes = copyDestConfig(cfg.BrowserMonitoring.Attributes)
cp.SpanEvents.Attributes = copyDestConfig(cfg.SpanEvents.Attributes)
cp.TransactionTracer.Segments.Attributes = copyDestConfig(cfg.TransactionTracer.Segments.Attributes)
return cp
}
func transportSetting(t http.RoundTripper) interface{} {
if nil == t {
return nil
}
return fmt.Sprintf("%T", t)
}
func loggerSetting(lg Logger) interface{} {
if nil == lg {
return nil
}
if _, ok := lg.(logger.ShimLogger); ok {
return nil
}
return fmt.Sprintf("%T", lg)
}
const (
// https://source.datanerd.us/agents/agent-specs/blob/master/Custom-Host-Names.md
hostByteLimit = 255
)
type settings Config
func (s settings) MarshalJSON() ([]byte, error) {
c := Config(s)
transport := c.Transport
c.Transport = nil
l := c.Logger
c.Logger = nil
js, err := json.Marshal(c)
if nil != err {
return nil, err
}
fields := make(map[string]interface{})
err = json.Unmarshal(js, &fields)
if nil != err {
return nil, err
}
// The License field is not simply ignored by adding the `json:"-"` tag
// to it since we want to allow consumers to populate Config from JSON.
delete(fields, `License`)
fields[`Transport`] = transportSetting(transport)
fields[`Logger`] = loggerSetting(l)
// Browser monitoring support.
if c.BrowserMonitoring.Enabled {
fields[`browser_monitoring.loader`] = "rum"
}
return json.Marshal(fields)
}
func configConnectJSONInternal(c Config, pid int, util *utilization.Data, e internal.Environment, version string, securityPolicies *internal.SecurityPolicies, metadata map[string]string) ([]byte, error) {
return json.Marshal([]interface{}{struct {
Pid int `json:"pid"`
Language string `json:"language"`
Version string `json:"agent_version"`
Host string `json:"host"`
HostDisplayName string `json:"display_host,omitempty"`
Settings interface{} `json:"settings"`
AppName []string `json:"app_name"`
HighSecurity bool `json:"high_security"`
Labels internal.Labels `json:"labels,omitempty"`
Environment internal.Environment `json:"environment"`
Identifier string `json:"identifier"`
Util *utilization.Data `json:"utilization"`
SecurityPolicies *internal.SecurityPolicies `json:"security_policies,omitempty"`
Metadata map[string]string `json:"metadata"`
EventData internal.EventHarvestConfig `json:"event_harvest_config"`
}{
Pid: pid,
Language: internal.AgentLanguage,
Version: version,
Host: internal.StringLengthByteLimit(util.Hostname, hostByteLimit),
HostDisplayName: internal.StringLengthByteLimit(c.HostDisplayName, hostByteLimit),
Settings: (settings)(c),
AppName: strings.Split(c.AppName, ";"),
HighSecurity: c.HighSecurity,
Labels: c.Labels,
Environment: e,
// This identifier field is provided to avoid:
// https://newrelic.atlassian.net/browse/DSCORE-778
//
// This identifier is used by the collector to look up the real
// agent. If an identifier isn't provided, the collector will
// create its own based on the first appname, which prevents a
// single daemon from connecting "a;b" and "a;c" at the same
// time.
//
// Providing the identifier below works around this issue and
// allows users more flexibility in using application rollups.
Identifier: c.AppName,
Util: util,
SecurityPolicies: securityPolicies,
Metadata: metadata,
EventData: internal.DefaultEventHarvestConfig(c),
}})
}
const (
// https://source.datanerd.us/agents/agent-specs/blob/master/Connect-LEGACY.md#metadata-hash
metadataPrefix = "NEW_RELIC_METADATA_"
)
func gatherMetadata(environ func() []string) map[string]string {
metadata := make(map[string]string)
env := environ()
for _, pair := range env {
if strings.HasPrefix(pair, metadataPrefix) {
idx := strings.Index(pair, "=")
if idx >= 0 {
metadata[pair[0:idx]] = pair[idx+1:]
}
}
}
return metadata
}
// config allows CreateConnectJSON to be a method on a non-public type.
type config struct{ Config }
func (c config) CreateConnectJSON(securityPolicies *internal.SecurityPolicies) ([]byte, error) {
env := internal.NewEnvironment()
util := utilization.Gather(utilization.Config{
DetectAWS: c.Utilization.DetectAWS,
DetectAzure: c.Utilization.DetectAzure,
DetectPCF: c.Utilization.DetectPCF,
DetectGCP: c.Utilization.DetectGCP,
DetectDocker: c.Utilization.DetectDocker,
DetectKubernetes: c.Utilization.DetectKubernetes,
LogicalProcessors: c.Utilization.LogicalProcessors,
TotalRAMMIB: c.Utilization.TotalRAMMIB,
BillingHostname: c.Utilization.BillingHostname,
}, c.Logger)
return configConnectJSONInternal(c.Config, os.Getpid(), util, env, Version, securityPolicies, gatherMetadata(os.Environ))
}
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