I am new to LUA, I have to pars below JSON value, I need to read all the val and attrid define in attributes, there will be more value might come in the attributes section, I tried with table, but no luck, any help will be appreciated
{
"obj1": {
"attributes": [
{
"val": "1",
"attrid": "test2"
},
{
"val": "1",
"attrid": "test1"
}
]
"status": 0
}
}
-- Require some JSON library.
-- You can get lua-cjson from luarocks.
local json = require 'cjson'
-- You probably get this from a file or something in your actual code
local your_json_string = "string_containing_json"
-- Parse the json into a Lua table
local data = json.decode(your_json_string)
-- Iterate over the array like any other Lua sequence
for i, attribute in ipairs(data.obj1.attributes) do
-- Do whatever you want with the val and attrid values
print(attribute.val)
print(attribute.attrid)
end
Related
I am trying to parse the JSON file below. The problem is I cannot return "Mountpoint" as a key. It only gets parsed as a value. This is the command I am using to parse it json_data = JSON.parse(readjson). The reason I guess that it's a key is because if I run json_data.keys only EncryptionStatus and SwitchName are returned. Any help would be greatly appreciated.
{
"EncryptionStatus": [
{
"MountPoint": "C:",
"VolumeStatus": "FullyEncrypted"
},
{
"MountPoint": "F:",
"VolumeStatus": "FullyEncrypted"
},
{
"MountPoint": "G:",
"VolumeStatus": "FullyEncrypted"
},
{
"MountPoint": "H:",
"VolumeStatus": "FullyEncrypted"
}
],
"SwitchName": [
"LAN",
"WAN"
]
}
I tried using dig as a part of my JSON.parse but that didn't seem to help me.
JSON data can have multiple levels.
Your JSON document is a
Hash (Dictionary/Map/Object in other languages) that has two keys ("EncryptionStatus", "SwitchName"),
The value for the "EncryptionStatsu" key is an Array of Hashes (with keys "MountPoint" and "VolumeStatus").
# assuming your JSON is in a file called "input.json"
data = File.read("input.json")
json = JSON.parse(data)
json["EncryptionStatus"].each do |encryption_status|
puts "#{encryption_status["MountPoint"]} is #{encryption_status["VolumeStatus"]}"
end
This will print out
C: is FullyEncrypted
F: is FullyEncrypted
G: is FullyEncrypted
H: is FullyEncrypted
If you want to access a specific item you can look at the dig method. E.g.
json.dig("EncryptionStatus", 3)
Would return the information for mountpoint "H"
I have the following Json file and I need to compare data to see how many times each value repeat itself. The problem is, I have no idea about handling Json. I don't want the answer to my exercise, I want to know how to access the data. Json:
{
"tickets": [
{
"ticket_id": 0,
"timestamp": "2016/05/26 04:47:02",
"file_hash": "c9d4e03c5632416f",
"src_ip": "6.19.128.119",
"dst_ip": "145.231.76.44"
},
{
"ticket_id": 1,
"timestamp": "2017/05/28 16:14:22",
"file_hash": "ce8a056490a3fd3c",
"src_ip": "100.139.125.30",
"dst_ip": "145.231.76.44"
},
{
"ticket_id": 2,
"timestamp": "2015/08/23 03:27:10",
"file_hash": "d17f572496f48a11",
"src_ip": "67.153.41.75",
"dst_ip": "239.168.56.243"
},
{
"ticket_id": 3,
"timestamp": "2016/02/26 14:01:33",
"file_hash": "3b28f2abc966a386",
"src_ip": "6.19.128.119",
"dst_ip": "137.164.166.84"
},
]
}
If this is a string representation of the object, first you need to set a variable and parse the string to have object you can work with.
jsonString = "{...your json string...}"
Then parse the string,
import json
jsonObject = json.loads(jsonString)
To access the data within it's like any other js object. Example :
jsonObject.tickets[0].timestamp
would return "2016/05/26 04:47:02"
tickets is the key within the jsonObject, 0 is the index of the first object in the list of tickets.
You can use the built-in "json" library to parse your file into an object:
import json
f = open('myfile.json','r')
tickets = json.loads(f.read())
This will return a "tickets" object. How you "compare" (or what exactly you compare) is up to you.
I have a JSON file that contains a JSON Array
test.json
[
{ "Name": "Bob" },
{ "Age": "37" },
{ "DOB": "12/01/1985"}
]
I would like to test each respective element in the JSON array against an endpoint to observe the performance of the system against unique payloads
currently I have
testService.scala
val payload = jsonFile("test.json").circular
val httpProtocol = http
.baseURL("http://test.com")
.headers(Map("Content-Type" -> "application/json"))
val scn = scenario("Test Service")
.feed(payload)
.exec(http("test_request")
.post("/v1/test")
.queryParam("key", "123")
.body()
I am not able to pass each respective child from the payload in the .body() as a JSON
The Gatling Docs say that the JSON Feeder loads the each element of the Array into a record collection
https://gatling.io/docs/2.3/session/feeder/
i.e:
record1: Map("id" -> 19434, "foo" -> 1)
record2: Map("id" -> 19435, "foo" -> 2)
and set the body to .body(StringBody("""[{"id": ${id}}]"""))
The issue is I have different keys (Name,Age,DOB) and I'd like each one to be a different request sent.
.body(StringBody("""[{"KEY_NAME_HERE": ${KEY_NAME_HERE}}]"""))
How do I achieve this?
This is how i am doing:-
company_users.json.json
[
{
"env":"dev",
"userName": "a#test.com",
"password": "Qwerty!12345678"
},
{
"env":"sit",
"userName": "b#test.com",
"password": "Qwerty!12345678"
},
{
"env":"uat",
"userName": "c#test.com",
"password": "Qwerty!12345678"
},
{
"env":"prod",
"userName": "d#test.com",
"password": "Qwerty!12345678"
}
]
Working Code Snippet:
val jsonFileFeederCompany = jsonFile("data/company_users.json").circular
val get_company_user_token = http("Get Company Tokens")
.post(gwt_token_url)
.header("Content-Type", "application/json")
.header("Accept", "application/json")
.body(StringBody(
"""{
"env": "${env}",
"userName": "${userName}",
"password": "${password}"
}"""
)).asJson
.check(status.is(200))
.check(jsonPath("$.jwtToken").saveAs("jwtToken"))
val getCompanyUsersGwtToken = scenario("Create Company GWT token Scenario")
.feed(GetTokenRequest.jsonFileFeederCompany)
.exec(GetTokenRequest.get_company_user_token).exitHereIfFailed
This will read each array[position] from json and replace the values in request, to fetch security tokens from different env.
Hope this helps.
Regards,
Vikram Pathania
In your case JSONs from that array are loaded one by one, and since each first level key from that JSON will be saved as session attribute then users in your simulation end up with just 1 of 3 attributes depending which JSON was used. This way you can't (or to be precise can't easily) build body string. In that simple case it would be better to have JSONs with same fields, so you can rely on them when building request payload. Fe. you can place payload key and value in separate fields:
[
{
"key":"Name",
"value":"Bob"
},
{
"key":"Age",
"value":"37"
},
{
"key":"DOB",
"value":"12/01/1985"
},
]
This way for each user in simulation you will have two attributes key and value so you will be able to construct payload like:
.body(StringBody("""{"${key}": "${value}"}"""))
Of course this will work only in that simple case you described and with string-only values in JSONs. If your final goal is to make something more complex please provide real-life example.
I am trying to dynamically build some json based on data I retrieve from a database. Up until the opening '[' is the "root" I guess you could say. The next parts with name and value are dynamic and will be based on the number of results I get from the db. I query the db and then the idea was to iterate through the result adding to the json. Can I use jsonBuilder for the root section and then loop with jsonSlurper to add each additional section? Most of the examples I have seen deal with a root and then a one time "slurp" and then joining the two so wasn't sure if I should try a different method for looping and appending multiple sections.
Any tips would be greatly appreciated. Thanks.
{
"hostname": "$hostname",
"path": "$path",
"extPath": "$extPath",
"appName": "$appName",
"update": {"parameter": [
{
"name": "$name",
"value": "$value"
},
{
"name": "$name",
"value": "$value"
}
]}
}
EDIT: So what I ended up doing was just using StringBuilder to create the initial block and then append the subsequent sections. Maybe not the most graceful way to do it, but it works!
//Create the json string
StringBuilder json = new StringBuilder("""{
"hostname": "$hostname",
"path": "$path",
"extPath": "$extPath",
"appName": "$appName",
"update": {"parameter": ["""
)
//Append
sql.eachRow("""<query>""",
{ params ->
json.append("""{ "name": "params.name", "value": "params.value" },""");
}
)
//Add closing json tags
json.append("""]}}""")
If I got your explanation correctly and if the data is not very big (it can live in memory), I'd build a Map object (which is very easy to work with in groovy) and convert it to JSON afterwards. Something like this:
def data = [
hostname: hostname,
path: path,
extPath: extPath,
appName: appName,
update: [parameter: []]
]
sql.eachRow(sqlStr) { row ->
data.update.parameter << [name: row.name, value: row.value]
}
println JsonOutput.toJson(data)
If you're using Grails and Groovy you can utilize grails.converters.JSON.
First, define a JSON named config:
JSON.createNamedConfig('person') {
it.registerObjectMarshaller(Person) {
Person person ->
def output = [:]
output['name'] = person.name
output['address'] = person.address
output['age'] = person.age
output
}
}
This will result in a statically defined named configuration for the Object type of person. Now, you can simply call:
JSON.use('person') {
Person.findAll() as JSON
}
This will return every person in the database with their name, address and age all in one JSON request. I don't know if you're using grails as well in this situation though, for pure Groovy go with another answer here.
I want to extract employeid and result where deptcode, Name, and position are present.
{
"employeeid": 101,
"result": {
"deptcode": 0,
"Name": "Henry",
"position": "Administrator head."
}
}
My current code is:
i = beginIndex
temp = ""
value = ""
while i < endIndex
temp = dataMap[i].to_s.split(":")[1].strip()
value += "#{temp},"
i += 1
end
Extract Fields by Hash Key
If you have a valid JSON string, you can covert it to a Ruby hash and access fields by key. Using Enumerable#all? will enable you to only return a value if all fields are present. For example:
require 'json'
# Use a valid JSON string, or a native Ruby hash. We'll assume you're
# starting with a JSON string, although the following would be a valid
# Ruby hash object without parsing if not wrapped in quotes. YMMV.
json = <<~EOF
{
"employeeid": 101,
"result": {
"deptcode": 0,
"Name": "Henry",
"position": "Administrator head."
}
}
EOF
# Convert the JSON above to a Ruby hash.
hash = JSON.parse json
# Extract fields when all keys are present.
[ hash['employeeid'], hash['result'] ] if
hash['result'].keys.all? { |key| %w[deptcode Name position].include? key }
#=> [101, {"deptcode"=>0, "Name"=>"Henry", "position"=>"Administrator head."}]
This works fine with your corrected corpus. If you have an array of results, or a deeply-nested structure, then you'll need to do some additional coding to make it work. However, it works just fine with the refactored data given in the original post.