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config.go
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/
config.go
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package config
import (
"github.com/dafanshu/benthos/v3/internal/docs"
"github.com/dafanshu/benthos/v3/lib/api"
"github.com/dafanshu/benthos/v3/lib/buffer"
"github.com/dafanshu/benthos/v3/lib/condition"
"github.com/dafanshu/benthos/v3/lib/input"
"github.com/dafanshu/benthos/v3/lib/log"
"github.com/dafanshu/benthos/v3/lib/manager"
"github.com/dafanshu/benthos/v3/lib/metrics"
"github.com/dafanshu/benthos/v3/lib/output"
"github.com/dafanshu/benthos/v3/lib/processor"
"github.com/dafanshu/benthos/v3/lib/stream"
"github.com/dafanshu/benthos/v3/lib/tracer"
"gopkg.in/yaml.v3"
)
//------------------------------------------------------------------------------
// Type is the Benthos service configuration struct.
type Type struct {
HTTP api.Config `json:"http" yaml:"http"`
stream.Config `json:",inline" yaml:",inline"`
manager.ResourceConfig `json:",inline" yaml:",inline"`
Logger log.Config `json:"logger" yaml:"logger"`
Metrics metrics.Config `json:"metrics" yaml:"metrics"`
Tracer tracer.Config `json:"tracer" yaml:"tracer"`
SystemCloseTimeout string `json:"shutdown_timeout" yaml:"shutdown_timeout"`
Tests []interface{} `json:"tests,omitempty" yaml:"tests,omitempty"`
}
// New returns a new configuration with default values.
func New() Type {
return Type{
HTTP: api.NewConfig(),
Config: stream.NewConfig(),
ResourceConfig: manager.NewResourceConfig(),
Logger: log.NewConfig(),
Metrics: metrics.NewConfig(),
Tracer: tracer.NewConfig(),
SystemCloseTimeout: "20s",
Tests: nil,
}
}
// SanitisedConfig is deprecated and will be removed in V4.
//
// TODO: V4 Remove this
type SanitisedConfig struct {
HTTP interface{} `json:"http" yaml:"http"`
Input interface{} `json:"input" yaml:"input"`
Buffer interface{} `json:"buffer" yaml:"buffer"`
Pipeline interface{} `json:"pipeline" yaml:"pipeline"`
Output interface{} `json:"output" yaml:"output"`
Manager interface{} `json:"resources" yaml:"resources"`
Logger interface{} `json:"logger" yaml:"logger"`
Metrics interface{} `json:"metrics" yaml:"metrics"`
Tracer interface{} `json:"tracer" yaml:"tracer"`
SystemCloseTimeout interface{} `json:"shutdown_timeout" yaml:"shutdown_timeout"`
Tests interface{} `json:"tests,omitempty" yaml:"tests,omitempty"`
}
// SanitisedV2Config describes custom options for how a config is sanitised
// using the V2 API.
type SanitisedV2Config struct {
RemoveTypeField bool
RemoveDeprecatedFields bool
}
// SanitisedV2 returns a sanitised version of the config as a yaml.Node.
func (c Type) SanitisedV2(conf SanitisedV2Config) (yaml.Node, error) {
var node yaml.Node
if err := node.Encode(c); err != nil {
return node, err
}
if err := Spec().SanitiseYAML(&node, docs.SanitiseConfig{
RemoveTypeField: conf.RemoveTypeField,
RemoveDeprecated: conf.RemoveDeprecatedFields,
}); err != nil {
return node, err
}
return node, nil
}
// Sanitised is deprecated and will be removed in V4.
//
// TODO: V4 Remove this
func (c Type) Sanitised() (*SanitisedConfig, error) {
return c.sanitised(false)
}
// SanitisedNoDeprecated is deprecated and will be removed in V4.
//
// TODO: V4 Remove this
func (c Type) SanitisedNoDeprecated() (*SanitisedConfig, error) {
return c.sanitised(true)
}
func (c Type) sanitised(skipDeprecated bool) (*SanitisedConfig, error) {
inConf, err := c.Input.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var pipeConf interface{}
pipeConf, err = c.Pipeline.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var outConf interface{}
outConf, err = c.Output.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var bufConf interface{}
bufConf, err = c.Buffer.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var mgrConf interface{}
mgrConf, err = c.Manager.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var metConf interface{}
metConf, err = c.Metrics.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var tracConf interface{}
tracConf, err = c.Tracer.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
var logConf interface{}
logConf, err = c.Logger.Sanitised(skipDeprecated)
if err != nil {
return nil, err
}
return &SanitisedConfig{
HTTP: c.HTTP,
Input: inConf,
Buffer: bufConf,
Pipeline: pipeConf,
Output: outConf,
Manager: mgrConf,
Logger: logConf,
Metrics: metConf,
Tracer: tracConf,
SystemCloseTimeout: c.SystemCloseTimeout,
Tests: c.Tests,
}, nil
}
//------------------------------------------------------------------------------
// AddExamples takes a configuration struct and a variant list of type names to
// add to it and injects those types appropriately.
//
// For example, your variant arguments could be "kafka" and "amqp", which case
// this function will create a configuration that reads from Kafka and writes
// over AMQP.
func AddExamples(conf *Type, examples ...string) {
var inputType, bufferType, conditionType, outputType string
var processorTypes []string
for _, e := range examples {
if _, exists := input.Constructors[e]; exists && inputType == "" {
inputType = e
}
if _, exists := buffer.Constructors[e]; exists {
bufferType = e
}
if _, exists := processor.Constructors[e]; exists {
processorTypes = append(processorTypes, e)
}
if _, exists := condition.Constructors[e]; exists {
conditionType = e
}
if _, exists := output.Constructors[e]; exists {
outputType = e
}
}
if len(inputType) > 0 {
conf.Input.Type = inputType
}
if len(bufferType) > 0 {
conf.Buffer.Type = bufferType
}
if len(processorTypes) > 0 {
for _, procType := range processorTypes {
procConf := processor.NewConfig()
procConf.Type = procType
conf.Pipeline.Processors = append(conf.Pipeline.Processors, procConf)
}
}
if len(conditionType) > 0 {
condConf := condition.NewConfig()
condConf.Type = conditionType
procConf := processor.NewConfig()
procConf.Type = "filter_parts"
procConf.FilterParts.Type = conditionType
conf.Pipeline.Processors = append(conf.Pipeline.Processors, procConf)
}
if len(outputType) > 0 {
conf.Output.Type = outputType
}
}
//------------------------------------------------------------------------------
// Read will attempt to read a configuration file path into a structure. Returns
// an array of lint messages or an error.
//
// TODO: V4 Remove this and force everything through internal/config
func Read(path string, replaceEnvs bool, config *Type) ([]string, error) {
return ReadV2(path, replaceEnvs, false, config)
}
// ReadV2 will attempt to read a configuration file path into a structure.
// Returns an array of lint messages or an error.
//
// TODO: V4 Remove this and force everything through internal/config
func ReadV2(path string, replaceEnvs, rejectDeprecated bool, config *Type) ([]string, error) {
configBytes, lints, err := ReadWithJSONPointersLinted(path, replaceEnvs)
if err != nil {
return nil, err
}
if err := yaml.Unmarshal(configBytes, config); err != nil {
return nil, err
}
lintCtx := docs.NewLintContext()
lintCtx.RejectDeprecated = rejectDeprecated
newLints, err := LintV2(lintCtx, configBytes)
if err != nil {
return nil, err
}
lints = append(lints, newLints...)
return lints, nil
}