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[7.17](backport #34874) [Azure] Sanitize message in case of malformed…
… json (#35623) * [Azure] Sanitize message in case of malformed json (#34874) * Add sanitization function and test for azure input (cherry picked from commit 4096f9b) * Fix logger import * fix linter * Fix changelog --------- Co-authored-by: lucianpy <59661554+lucianpy@users.noreply.github.com> Co-authored-by: lucian-ioan <lucian.pyc@gmail.com> Co-authored-by: Denis <denis.rechkunov@elastic.co>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| // or more contributor license agreements. Licensed under the Elastic License; | ||
| // you may not use this file except in compliance with the Elastic License. | ||
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| //go:build !aix | ||
| // +build !aix | ||
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| package azureeventhub | ||
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| import ( | ||
| "bytes" | ||
| "errors" | ||
| ) | ||
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| type sanitizationOption string | ||
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| const ( | ||
| newLines sanitizationOption = "NEW_LINES" | ||
| singleQuotes sanitizationOption = "SINGLE_QUOTES" | ||
| ) | ||
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| // sanitizeOptionsValidate validates for supported sanitization options | ||
| func sanitizeOptionsValidate(s string) error { | ||
| switch s { | ||
| case "NEW_LINES": | ||
| return nil | ||
| case "SINGLE_QUOTES": | ||
| return nil | ||
| default: | ||
| return errors.New("invalid sanitization option") | ||
| } | ||
| } | ||
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| // sanitize applies the sanitization options specified in the config | ||
| // if no sanitization options are provided, the message remains unchanged | ||
| func sanitize(jsonByte []byte, opts ...string) []byte { | ||
| res := jsonByte | ||
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| for _, opt := range opts { | ||
| switch sanitizationOption(opt) { | ||
| case newLines: | ||
| res = sanitizeNewLines(res) | ||
| case singleQuotes: | ||
| res = sanitizeSingleQuotes(res) | ||
| } | ||
| } | ||
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| return res | ||
| } | ||
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| // sanitizeNewLines removes newlines found in the message | ||
| func sanitizeNewLines(jsonByte []byte) []byte { | ||
| return bytes.ReplaceAll(jsonByte, []byte("\n"), []byte{}) | ||
| } | ||
|
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| // sanitizeSingleQuotes replaces single quotes with double quotes in the message | ||
| // single quotes that are in between double quotes remain unchanged | ||
| func sanitizeSingleQuotes(jsonByte []byte) []byte { | ||
| var result bytes.Buffer | ||
| var prevChar byte | ||
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| inDoubleQuotes := false | ||
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| for _, r := range jsonByte { | ||
| if r == '"' && prevChar != '\\' { | ||
| inDoubleQuotes = !inDoubleQuotes | ||
| } | ||
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| if r == '\'' && !inDoubleQuotes { | ||
| result.WriteRune('"') | ||
| } else { | ||
| result.WriteByte(r) | ||
| } | ||
| prevChar = r | ||
| } | ||
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| return result.Bytes() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| // Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| // or more contributor license agreements. Licensed under the Elastic License; | ||
| // you may not use this file except in compliance with the Elastic License. | ||
|
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| //go:build !aix | ||
| // +build !aix | ||
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| package azureeventhub | ||
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| import ( | ||
| "fmt" | ||
| "testing" | ||
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| "github.com/stretchr/testify/assert" | ||
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| "github.com/elastic/beats/v7/libbeat/logp" | ||
| ) | ||
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| func TestParseMultipleMessagesSanitization(t *testing.T) { | ||
| msg := "{\"records\":[{'test':\"this is some message\",\n\n\"time\":\"2019-12-17T13:43:44.4946995Z\"}," + | ||
| "{\"test\":\"this is '2nd' message\",\"time\":\"2019-12-17T13:43:44.4946995Z\"}," + | ||
| "{\"time\": \"2023-04-11T13:35:20Z\", \"resourceId\": \"/SUBSCRIPTIONS/REDACTED/RESOURCEGROUPS/ELASTIC-FUNCTION-TEST/PROVIDERS/MICROSOFT.WEB/SITES/REDACTED\", \"category\": \"FunctionAppLogs\", \"operationName\": \"Microsoft.Web/sites/functions/log\", \"level\": \"Informational\", \"location\": \"West Europe\", \"properties\": {'appName':'REDACTED','roleInstance':'REDACTED','message':'Elastic Test Function Trigger. ---- West Europe West Europe West Europe West Europe West Europe ','category':'Function.HttpTriggerJava.User','hostVersion':'4.16.5.5','functionInvocationId':'REDACTED','functionName':'HttpTriggerJava','hostInstanceId':'REDACTED','level':'Information','levelId':2,'processId':62}}]}" | ||
| msgs := []string{ | ||
| "{\"test\":\"this is some message\",\"time\":\"2019-12-17T13:43:44.4946995Z\"}", | ||
| "{\"test\":\"this is '2nd' message\",\"time\":\"2019-12-17T13:43:44.4946995Z\"}", | ||
| "{\"category\":\"FunctionAppLogs\",\"level\":\"Informational\",\"location\":\"West Europe\",\"operationName\":\"Microsoft.Web/sites/functions/log\",\"properties\":{\"appName\":\"REDACTED\",\"category\":\"Function.HttpTriggerJava.User\",\"functionInvocationId\":\"REDACTED\",\"functionName\":\"HttpTriggerJava\",\"hostInstanceId\":\"REDACTED\",\"hostVersion\":\"4.16.5.5\",\"level\":\"Information\",\"levelId\":2,\"message\":\"Elastic Test Function Trigger. ---- West Europe West Europe West Europe West Europe West Europe \",\"processId\":62,\"roleInstance\":\"REDACTED\"},\"resourceId\":\"/SUBSCRIPTIONS/REDACTED/RESOURCEGROUPS/ELASTIC-FUNCTION-TEST/PROVIDERS/MICROSOFT.WEB/SITES/REDACTED\",\"time\":\"2023-04-11T13:35:20Z\"}", | ||
| } | ||
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| input := azureInput{ | ||
| log: logp.NewLogger(fmt.Sprintf("%s test for input", inputName)), | ||
| config: azureInputConfig{ | ||
| SanitizeOptions: []string{"SINGLE_QUOTES", "NEW_LINES"}, | ||
| }, | ||
| } | ||
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| messages := input.parseMultipleMessages([]byte(msg)) | ||
| assert.NotNil(t, messages) | ||
| assert.Equal(t, len(messages), 3) | ||
| for _, ms := range messages { | ||
| assert.Contains(t, msgs, ms) | ||
| } | ||
| } | ||
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| func TestSanitize(t *testing.T) { | ||
| jsonByte := []byte("{'test':\"this is 'some' message\n\",\n\"time\":\"2019-12-17T13:43:44.4946995Z\"}") | ||
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| testCases := []struct { | ||
| name string | ||
| opts []string | ||
| expected []byte | ||
| }{ | ||
| { | ||
| name: "no options", | ||
| opts: []string{}, | ||
| expected: jsonByte, | ||
| }, | ||
| { | ||
| name: "NEW_LINES option", | ||
| opts: []string{"NEW_LINES"}, | ||
| expected: []byte("{'test':\"this is 'some' message\",\"time\":\"2019-12-17T13:43:44.4946995Z\"}"), | ||
| }, | ||
| { | ||
| name: "SINGLE_QUOTES option", | ||
| opts: []string{"SINGLE_QUOTES"}, | ||
| expected: []byte("{\"test\":\"this is 'some' message\n\",\n\"time\":\"2019-12-17T13:43:44.4946995Z\"}"), | ||
| }, | ||
| { | ||
| name: "both options", | ||
| opts: []string{"NEW_LINES", "SINGLE_QUOTES"}, | ||
| expected: []byte("{\"test\":\"this is 'some' message\",\"time\":\"2019-12-17T13:43:44.4946995Z\"}"), | ||
| }, | ||
| } | ||
|
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| // Run test cases | ||
| for _, tc := range testCases { | ||
| tc := tc | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| res := sanitize(jsonByte, tc.opts...) | ||
| assert.Equal(t, tc.expected, res) | ||
| }) | ||
| } | ||
| } |