'm having trouble with PROBLEM CHILD GITHUB CODE

Elastic Stack Elasticsearch
1

</> POST scripts/painless/execute
{
"script": {
"lang": "painless",
"source": """
String nGramAtPosition(String field, int fieldcount, int n) {
if (fieldcount+n>field.length()) {
return ''
}
else
{
return field.substring(fieldcount, fieldcount+n)
}
}
String fieldtext = ctx[params.field];
if(fieldtext.length()>=params.max_length) {
fieldtext = fieldtext.substring(0, params.max_length);
}
else {
fieldtext = fieldtext;
}
for (int i=0;i<(fieldtext.length());i++) {
ctx[params.field+''+Integer.toString(params.ngram_count)+'-gram_feature'+Integer.toString(i)] = nGramAtPosition(fieldtext, i, params.ngram_count)
}
"""
}
}
</ >
</> I receive
{
"error" : {
"root_cause" : [
{
"type" : "script_exception",
"reason" : "compile error",
"script_stack" : [
"... }\r\n}\r\nString fieldtext = ctx[params.field];\r\nif(fi ...",
" ^---- HERE"
],
"script" : "\r\nString nGramAtPosition(String field, int fieldcount, int n) {\r\n if (fieldcount+n>field.length()) {\r\n return ''\r\n }\r\n else \r\n{\r\n return field.substring(fieldcount, fieldcount+n)\r\n}\r\n}\r\nString fieldtext = ctx[params.field];\r\nif(fieldtext.length()>=params.max_length) {\r\n fieldtext = fieldtext.substring(0, params.max_length);\r\n}\r\nelse {\r\n fieldtext = fieldtext;\r\n}\r\nfor (int i=0;i<(fieldtext.length());i++) {\r\n ctx[params.field+''+Integer.toString(params.ngram_count)+'-gram_feature'+Integer.toString(i)] = nGramAtPosition(fieldtext, i, params.ngram_count)\r\n}\r\n ",
"lang" : "painless",
"position" : {
"offset" : 212,
"start" : 187,
"end" : 237
}
}
],
"type" : "script_exception",
"reason" : "compile error",
"script_stack" : [
"... }\r\n}\r\nString fieldtext = ctx[params.field];\r\nif(fi ...",
" ^---- HERE"
],
"script" : "\r\nString nGramAtPosition(String field, int fieldcount, int n) {\r\n if (fieldcount+n>field.length()) {\r\n return ''\r\n }\r\n else \r\n{\r\n return field.substring(fieldcount, fieldcount+n)\r\n}\r\n}\r\nString fieldtext = ctx[params.field];\r\nif(fieldtext.length()>=params.max_length) {\r\n fieldtext = fieldtext.substring(0, params.max_length);\r\n}\r\nelse {\r\n fieldtext = fieldtext;\r\n}\r\nfor (int i=0;i<(fieldtext.length());i++) {\r\n ctx[params.field+'_'+Integer.toString(params.ngram_count)+'-gram_feature'+Integer.toString(i)] = nGramAtPosition(fieldtext, i, params.ngram_count)\r\n}\r\n ",
"lang" : "painless",
"position" : {
"offset" : 212,
"start" : 187,
"end" : 237
},
"caused_by" : {
"type" : "illegal_argument_exception",
"reason" : "cannot resolve symbol [ctx]"
}
},
"status" : 400
}
</>

2

Context (ctx) is not available in the painless execute test API.

The test script provided in Machine learning in cybersecurity: Training supervised models to detect DGA activity is meant to be used with the reindex action, where ctx is available.

3

Welcome to our community! :smiley:

Please format your code/logs/config using the </> button, or markdown style back ticks. It helps to make things easy to read which helps us help you :slight_smile:

4

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