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The `convert` processor converts a field in the event to a different type, such as converting a string to an integer. For a full description of the processor's capabilities see the add documentation. Closes elastic#8124
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you under | ||
| // the Apache License, Version 2.0 (the "License"); you may | ||
| // not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
|
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| package convert | ||
|
|
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| import ( | ||
| "fmt" | ||
| "strings" | ||
|
|
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| "github.com/pkg/errors" | ||
| ) | ||
|
|
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| func defaultConfig() config { | ||
| return config{ | ||
| IgnoreMissing: false, | ||
| Mode: copyMode, | ||
| } | ||
| } | ||
|
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| type config struct { | ||
| Fields []field `config:"fields" validate:"required"` // List of fields to convert. | ||
| Tag string `config:"tag"` // Processor ID for debug and metrics. | ||
| IgnoreMissing bool `config:"ignore_missing"` // Skip field when From field is missing. | ||
| IgnoreFailure bool `config:"ignore_failure"` // Ignore conversion errors. | ||
| Mode mode `config:"mode"` // Mode (copy vs rename). | ||
| } | ||
|
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| type field struct { | ||
| From string `config:"from" validate:"required"` | ||
| To string `config:"to"` | ||
| Type dataType `config:"type"` | ||
| } | ||
|
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| func (f field) Validate() error { | ||
| if f.To == "" && f.Type == unset { | ||
| return errors.New("each field must have a 'to' or a 'type'") | ||
| } | ||
| return nil | ||
| } | ||
|
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| func (f field) String() string { | ||
| return fmt.Sprintf("{from=%v, to=%v, type=%v}", f.From, f.To, f.Type) | ||
| } | ||
|
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| type dataType uint8 | ||
|
|
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| // List of dataTypes. | ||
| const ( | ||
| unset dataType = iota | ||
| Integer | ||
| Long | ||
| Float | ||
| Double | ||
| String | ||
| Boolean | ||
| IP | ||
| ) | ||
|
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| var dataTypeNames = map[dataType]string{ | ||
| unset: "[unset]", | ||
| Integer: "integer", | ||
| Long: "long", | ||
| Float: "float", | ||
| Double: "double", | ||
| String: "string", | ||
| Boolean: "boolean", | ||
| IP: "ip", | ||
| } | ||
|
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| func (dt dataType) String() string { | ||
| return dataTypeNames[dt] | ||
| } | ||
|
|
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| func (dt dataType) MarshalText() ([]byte, error) { | ||
| return []byte(dt.String()), nil | ||
| } | ||
|
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| func (dt *dataType) Unpack(s string) error { | ||
| s = strings.ToLower(s) | ||
| for typ, name := range dataTypeNames { | ||
| if s == name { | ||
| *dt = typ | ||
| return nil | ||
| } | ||
| } | ||
| return errors.Errorf("invalid data type: %v", s) | ||
| } | ||
|
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| type mode uint8 | ||
|
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| // List of modes. | ||
| const ( | ||
| copyMode mode = iota | ||
| renameMode | ||
| ) | ||
|
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| var modeNames = map[mode]string{ | ||
| copyMode: "copy", | ||
| renameMode: "rename", | ||
| } | ||
|
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| func (m mode) String() string { | ||
| return modeNames[m] | ||
| } | ||
|
|
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| func (m mode) MarshalText() ([]byte, error) { | ||
| return []byte(m.String()), nil | ||
| } | ||
|
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| func (m *mode) Unpack(s string) error { | ||
| s = strings.ToLower(s) | ||
| for md, name := range modeNames { | ||
| if s == name { | ||
| *m = md | ||
| return nil | ||
| } | ||
| } | ||
| return errors.Errorf("invalid mode: %v", s) | ||
| } |
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