Syntax
fuzzJSON({ named_collection [, option=value [,..]] | json_str[, random_seed] })
Arguments
| Argument | Description |
|---|---|
named_collection | A NAMED COLLECTION. |
option=value | Named collection optional parameters and their values. |
json_str (String) | The source string representing structured data in JSON format. |
random_seed (UInt64) | Manual random seed for producing stable results. |
reuse_output (boolean) | Reuse the output from a fuzzing process as input for the next fuzzer. |
malform_output (boolean) | Generate a string that cannot be parsed as a JSON object. |
max_output_length (UInt64) | Maximum allowable length of the generated or perturbed JSON string. |
probability (Float64) | The probability to fuzz a JSON field (a key-value pair). Must be within [0, 1] range. |
max_nesting_level (UInt64) | The maximum allowed depth of nested structures within the JSON data. |
max_array_size (UInt64) | The maximum allowed size of a JSON array. |
max_object_size (UInt64) | The maximum allowed number of fields on a single level of a JSON object. |
max_string_value_length (UInt64) | The maximum length of a String value. |
min_key_length (UInt64) | The minimum key length. Should be at least 1. |
max_key_length (UInt64) | The maximum key length. Should be greater or equal than the min_key_length, if specified. |
Returned value
A table object with a a single column containing perturbed JSON strings.Usage Example
CREATE NAMED COLLECTION json_fuzzer AS json_str='{}';
SELECT * FROM fuzzJSON(json_fuzzer) LIMIT 3;
{"52Xz2Zd4vKNcuP2":true}
{"UPbOhOQAdPKIg91":3405264103600403024}
{"X0QUWu8yT":[]}
SELECT * FROM fuzzJSON(json_fuzzer, json_str='{"name" : "value"}', random_seed=1234) LIMIT 3;
{"key":"value", "mxPG0h1R5":"L-YQLv@9hcZbOIGrAn10%GA"}
{"BRE3":true}
{"key":"value", "SWzJdEJZ04nrpSfy":[{"3Q23y":[]}]}
SELECT * FROM fuzzJSON(json_fuzzer, json_str='{"students" : ["Alice", "Bob"]}', reuse_output=true) LIMIT 3;
{"students":["Alice", "Bob"], "nwALnRMc4pyKD9Krv":[]}
{"students":["1rNY5ZNs0wU&82t_P", "Bob"], "wLNRGzwDiMKdw":[{}]}
{"xeEk":["1rNY5ZNs0wU&82t_P", "Bob"], "wLNRGzwDiMKdw":[{}, {}]}
SELECT * FROM fuzzJSON(json_fuzzer, json_str='{"students" : ["Alice", "Bob"]}', max_output_length=512) LIMIT 3;
{"students":["Alice", "Bob"], "BREhhXj5":true}
{"NyEsSWzJdeJZ04s":["Alice", 5737924650575683711, 5346334167565345826], "BjVO2X9L":true}
{"NyEsSWzJdeJZ04s":["Alice", 5737924650575683711, 5346334167565345826], "BjVO2X9L":true, "k1SXzbSIz":[{}]}
SELECT * FROM fuzzJSON('{"id":1}', 1234) LIMIT 3;
{"id":1, "mxPG0h1R5":"L-YQLv@9hcZbOIGrAn10%GA"}
{"BRjE":16137826149911306846}
{"XjKE":15076727133550123563}
SELECT * FROM fuzzJSON(json_nc, json_str='{"name" : "FuzzJSON"}', random_seed=1337, malform_output=true) LIMIT 3;
U"name":"FuzzJSON*"SpByjZKtr2VAyHCO"falseh
{"name"keFuzzJSON, "g6vVO7TCIk":jTt^
{"DBhz":YFuzzJSON5}