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feat: implement xml Marshaler interface for event/reading tags
Signed-off-by: Chris Hung <[email protected]>
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Chris Hung
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Jan 18, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| // | ||
| // Copyright (C) 2023 IOTech Ltd | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| package dtos | ||
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| import "encoding/xml" | ||
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| type Tags map[string]any | ||
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| // MarshalXML fulfills the Marshaler interface for Tags field, which is being ignored | ||
| // from XML Marshaling since maps are not supported. We have to provide our own | ||
| // marshaling of the Tags field if it is non-empty. | ||
| func (t Tags) MarshalXML(e *xml.Encoder, start xml.StartElement) error { | ||
| if len(t) == 0 { | ||
| return nil | ||
| } | ||
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| err := e.EncodeToken(start) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| for k, v := range t { | ||
| xmlMapEntry := struct { | ||
| XMLName xml.Name | ||
| Value any `xml:",chardata"` | ||
| }{ | ||
| XMLName: xml.Name{Local: k}, | ||
| Value: v, | ||
| } | ||
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| err = e.Encode(xmlMapEntry) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
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| return e.EncodeToken(start.End()) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| // | ||
| // Copyright (C) 2023 IOTech Ltd | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| package dtos | ||
|
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| import ( | ||
| "encoding/xml" | ||
| "strings" | ||
| "testing" | ||
|
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| "github.com/stretchr/testify/require" | ||
| ) | ||
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| func TestTags_MarshalXML(t *testing.T) { | ||
| testTags := Tags{ | ||
| "String": "value", | ||
| "Numeric": 123, | ||
| "Bool": false, | ||
| } | ||
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| xml, err := xml.Marshal(testTags) | ||
| require.NoError(t, err) | ||
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| contains := []string{ | ||
| "<String>value</String>", | ||
| "<Numeric>123</Numeric>", | ||
| "<Bool>false</Bool>"} | ||
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| for _, v := range contains { | ||
| ok := strings.Contains(string(xml), v) | ||
| require.True(t, ok) | ||
| } | ||
| } |