extracting items from json with python - json

I made an api query which returns a json as response. I am trying to extract the temperature_2m for the first time in the list (2022-11-03T00:00) which is 5.7, not sure how to get it with python
api_query ={
"latitude": 52.52,
"longitude": 13.419998,
"generationtime_ms": 0.36203861236572266,
"utc_offset_seconds": 0,
"timezone": "GMT",
"timezone_abbreviation": "GMT",
"elevation": 38.0,
"hourly_units": {
"time": "iso8601",
"temperature_2m": "°C"
},
"hourly": {
"time": [
"2022-11-03T00:00",
"2022-11-03T01:00"
],
"temperature_2m": [
5.7,
5.2
]
}
}
for key in api_query:
temperature = api_query['hourly']['time'][0]['temperature_2m']
print(temperature)

This is not working:
temperature = api_query['hourly']['time'][0]['temperature_2m']
coz temperature is a sub attribute from "hourly" but not from "time"
you need instead:
for the temp:
temperature = api_query['hourly']['temperature_2m'][0]
print(temperature)
and for the time:
time = api_query['hourly']['time'][0]
here a Jupyter Notebook

temperature = api_query['hourly']['temperature_2m'][0]

Related

Parse json content in azure stream analytics

My SQL skills are very limited. Please help.
Modbus module on the Azure IoT edge returns JSON content to Stream Analytics job in this format (from downloaded sample data) -
[
{
"PublishTimestamp": "2021-07-28 19:28:15",
"Content": [
{
"HwId": "XY-MOD2-1",
"Data": [
{
"CorrelationId": "DefaultCorrelationId",
"SourceTimestamp": "2021-07-28 19:28:15",
"Values": [
{
"DisplayName": "Temperature",
"Address": "30002",
"Value": "210"
},
{
"DisplayName": "Temperature",
"Address": "30003",
"Value": "538"
}
]
}
]
}
],
"EventProcessedUtcTime": "2021-07-28T20:26:23.9127084Z",
"PartitionId": 0,
"EventEnqueuedUtcTime": "2021-07-28T19:28:15.9460000Z",
"IoTHub": {
"MessageId": null,
"CorrelationId": null,
"ConnectionDeviceId": "rp4linuxedge1",
"ConnectionDeviceGenerationId": "637630846187016425",
"EnqueuedTime": "2021-07-28T19:28:15.9550000Z",
"StreamId": null
}
},
I am unable to figure out what SQL syntax should I use to get this as output -
SourceTimestamp
Address
Value
Time1
30002
210
Time1
30003
538
Time2
30002
215
Time2
30003
540
The array within the JSON object can be accessed using this block of codes -
select
cast(dataArr.ArrayValue.SourceTimestamp as datetime) as SourceTimestamp,
cast(valuesArr.ArrayValue.Address as bigint) as Address,
cast(valuesArr.ArrayValue.Value as float) as Value
into powerbioutput
from iotinput i
cross apply GetArrayElements(i.Content) as contentArr
cross apply GetArrayElements(contentArr.ArrayValue.Data) as dataArr
cross apply GetArrayElements(dataArr.ArrayValue.[Values]) as valuesArr

Concatenating lists in Groovy

I have captured two sets of values by using JSON extractor in JMeter which I want to concatenate. Let me give you an example below for the format which I want to use.
The following are the two sets of captured values:
Set 1: [V2520 V2522 V2521 V2500 V2500]
Set 2: [PL PL PL NP NP]
So from the above sets, I am looking for the something like the following value, because the body which I have to send in a subsequent call contains the combination of these 2 values:
Answer: ["V2520PL", "V2522PL", "V2521PL", "V2500NP", "V2500NP"]
Can you please help me how to solve this in JMeter using Groovy?
This is the JSON I have:
{ "body": {
"responseObject": [
{
"benefitInfo": [
{
"procedureCode": "V2520",
"modifier": "PL",
"usage": "Dress",
"authorizationID": null,
"description": "ContactLensDisposable",
"id": "96",
"coPayAmount": "25"
},
{
"procedureCode": "V2522",
"modifier": "PL",
"usage": "Dress",
"authorizationID": null,
"description": "ContactLensDisposableBifocal",
"id": "98",
"coPayAmount": "25"
},
{
"procedureCode": "V2521",
"modifier": "PL",
"usage": "Dress",
"authorizationID": null,
"description": "ContactLensDisposableToric",
"id": "97",
"coPayAmount": "25"
},
{
"procedureCode": "V2500",
"modifier": "NP",
"usage": "Dress",
"authorizationID": null,
"description": "ContactLens (Non Plan)",
"id": "89",
"coPayAmount": "0"
},
{
"procedureCode": "V2500",
"modifier": "NP",
"usage": "Dress",
"authorizationID": null,
"description": "ContactLensConventional (Non Plan)",
"id": "157",
"coPayAmount": "0"
}
]
}
]}}
An easy way to do this is to combine them as you collect the values from the JSON when you parse it.
def json = new groovy.json.JsonSlurper().parseText(text)
def answer = json.body.responseObject[0].benefitInfo.collect { it.procedureCode + it.modifier }
assert answer == ["V2520PL", "V2522PL", "V2521PL", "V2500NP", "V2500NP"]
Another method would be to use transpose() and join():
def r = new groovy.json.JsonSlurper().parseText(text).body.responseObject.benefitInfo[0]
def answer = [r.procedureCode, r.modifier].transpose()*.join()
assert answer == ["V2520PL", "V2522PL", "V2521PL", "V2500NP", "V2500NP"]
Add JSR223 PostProcessor as a child of the request which returns the above JSON
Put the following code into "Script" area:
def answer = []
def benefitInfos = com.jayway.jsonpath.JsonPath.read(prev.getResponseDataAsString(), '$..benefitInfo')
benefitInfos.each { benefitInfo ->
benefitInfo.each { entry ->
answer.add(entry.get('procedureCode') + entry.get('modifier'))
}
}
vars.put('answer', new groovy.json.JsonBuilder(answer).toPrettyString())
That's it, you will be able to access generated value as ${answer} where required:
References:
Jayway JsonPath
Groovy: Parsing and producing JSON
Apache Groovy - Why and How You Should Use It

How to add root node in JSON for every object?

I convert excel file to JSON , to import it into my firebase DB.
On conversion, I have the JSON data in below format
[
{
"ProductNumber": "7381581",
"SKU": "test3",
},
{
"ProductNumber": "7381582",
"SKU": "test",
},
{..}
]
But I need it like this
{
"7381581" :{
"ProductNumber": "7381581",
"SKU": "test3",
},
"7381582":{
"ProductNumber": "7381582",
"SKU": "test",
},{..}
}
How can I make changes to the spreadsheet records to get the JSON in the above format ? (OR)
How should I add the key values to JSON dynamically?
You can use reduce as suggested to iterate over the original array and transform it into an object.
data.reduce((prev, current) => {
prev[current.ProductNumber] = current;
return prev;
}, {});
You can see a working example in the playground here.

Extract values from a parsed json object using a function node or split & switch node in NODE.red

Was trying to extract values from a parsed json object using a function node or split & switch node, tried to many ways and nothing seems to work fro me.
the example below I would like to have 5 outputs for the text and numeric values.
here is my payload in json:
{
"applicationID": "1",
"applicationName": "test_ds18b20",
"deviceName": "arduino_uno",
"devEUI": "1234567890123456",
"rxInfo": [
{
"mac": "aa755a0048050130",
"rssi": -57,
"loRaSNR": 10,
"name": "raspberry_pi",
"latitude": 1.466860686785175,
"longitude": 2.019478797912605,
"altitude": 0
}
],
"txInfo": {
"frequency": 868100000,
"dataRate": {
"modulation": "LORA",
"bandwidth": 125,
"spreadFactor": 7
},
"adr": true,
"codeRate": "4/5"
},
"fCnt": 9,
"fPort": 1,
"data": "Z29vZGJ5ZQ==",
"object": {}
}
first i try with function node to extract "data", but it returns array like this:
0: ""data":"Z29vZGJ5ZQ==""
1: "Z29vZGJ5ZQ=="
i dont need array i need string
function:
var regexsearch = /\"data\":\"(.*?)\"/i;
var my = msg.payload.match(regexsearch);
msg.payload = my;
return msg;
but i need to get only this Z29vZGJ5ZQ==
than i try with split & switch nodes and gets the whole linelike this: ""data":"Z29vZGJ5ZQ==""
but i need to get only this Z29vZGJ5ZQ==
and here is my flow:
[{"id":"d46d38e2.27cc78","type":"inject","z":"ff592a31.cf21a8","name":"","topic":"","payload":"{\"applicationID\":\"1\",\"applicationName\":\"test_ds18b20\",\"deviceName\":\"arduino_uno\",\"devEUI\":\"1234567890123456\",\"rxInfo\":[{\"mac\":\"aa755a0048050130\",\"rssi\":-57,\"loRaSNR\":10,\"name\":\"raspberry_pi\",\"latitude\":48.466860686785175,\"longitude\":35.019478797912605,\"altitude\":0}],\"txInfo\":{\"frequency\":868100000,\"dataRate\":{\"modulation\":\"LORA\",\"bandwidth\":125,\"spreadFactor\":7},\"adr\":true,\"codeRate\":\"4/5\"},\"fCnt\":9,\"fPort\":1,\"data\":\"Z29vZGJ5ZQ==\",\"object\":{}}","payloadType":"json","repeat":"","crontab":"","once":false,"x":90,"y":160,"wires":[["1a34819e.743eee"]]},{"id":"105db6d9.0df1c9","type":"debug","z":"ff592a31.cf21a8","name":"","active":true,"console":"false","complete":"false","x":610,"y":100,"wires":[]},{"id":"1ac8a3e1.8f379c","type":"split","z":"ff592a31.cf21a8","name":"","splt":",","spltType":"str","arraySplt":"1","arraySpltType":"len","stream":false,"addname":"","x":250,"y":340,"wires":[["c10ec515.102d38"]]},{"id":"c10ec515.102d38","type":"switch","z":"ff592a31.cf21a8","name":"","property":"payload","propertyType":"msg","rules":[{"t":"cont","v":"\"data\":","vt":"str"},{"t":"cont","v":"\"latitude\":","vt":"str"}],"checkall":"true","outputs":2,"x":370,"y":340,"wires":[["105db6d9.0df1c9"],["6b2d5d19.7868e4"]]},{"id":"1a34819e.743eee","type":"json","z":"ff592a31.cf21a8","name":"","pretty":false,"x":115.55555555555556,"y":312.22222222222223,"wires":[["1ac8a3e1.8f379c","bae9fa5d.a9f238"]]},{"id":"bae9fa5d.a9f238","type":"function","z":"ff592a31.cf21a8","name":"match","func":"var regexsearch = /\\\"data\\\":\\\"(.*?)\\\"/i;\nvar my = msg.payload.match(regexsearch);\nmsg.payload = my;\nreturn msg;","outputs":1,"noerr":0,"x":310,"y":160,"wires":[["105db6d9.0df1c9"]]},{"id":"6b2d5d19.7868e4","type":"debug","z":"ff592a31.cf21a8","name":"","active":true,"console":"false","complete":"false","x":610,"y":180,"wires":[]}]
Thanks for help

DocumentDB get min of subarray

my json data:
[
{
"Code": "GB-00001",
"BasicInformation": {
"WGS84Longitude": -4.670000,
"WGS84Latitude": 50.340000
},
"Availability": [{
"ArrivalDate": "2017-04-21",
"Price": 689
},
{
"ArrivalDate": "2017-04-28",
"Price": 1341
}
]},
{
"Code": "GB-00002",
"BasicInformation": {
"WGS84Longitude": -4.680000,
"WGS84Latitude": 50.350000
},
"Availability": [{
"ArrivalDate": "2017-04-21",
"Price": 659
},
{
"ArrivalDate": "2017-04-28",
"Price": 1440
}
]}
}]
I'd like the result to be like:
[
{
"HouseCode": "GB-00001",
"Country": "GB",
"location": {
"type": "Point",
"coordinates": [
50.340000,
-4.670000
]
}, "lowestPrice": 689
},
{
"HouseCode": "GB-00002",
"Country": "GB",
"location": {
"type": "Point",
"coordinates": [
50.350000,
-4.680000
]
}, "lowestPrice" : 659
}
My problem is: how to use the min(c.Availability.Price)
This is my current query with the lat lng convert to point, but no idea how to get the minimum/lowest price.
SELECT c.Code, c.BasicInformation.Country ,
{"type":"Point","coordinates": [c.BasicInformation.Latitude, c.BasicInformation.Longitude]} as location
FROM c
already tried with Join c.Availability a and , min(a.Price)
edit perhaps I am too early? https://feedback.azure.com/forums/263030-documentdb/suggestions/18561901-add-group-by-support-for-aggregate-functions
found that url in https://stackoverflow.com/a/42697673/169714
This is a pretty close to ideal situation for a user defined function (UDF).
Here is one that should do the trick:
function lowestPrice(availability) {
var i, len, lowest, row;
lowest = 2e308;
for (i = 0, len = availability.length; i < len; i++) {
row = availability[i];
lowest = Math.min(lowest, row.Price);
}
return lowest;
};
You call it like this:
SELECT
c.Code,
c.BasicInformation.Country,
{"type":"Point","coordinates": [
c.BasicInformation.Latitude, c.BasicInformation.Longitude
]} as location,
udf.lowestPrice(c.Availability) as lowestPrice
FROM c
AFAIK, you could only use UDF to achieve your requirement for now. Also, I have checked the code provided by Larry Maccherone, and it could both work on Azure DocumentDB service and my DocumentDB Emulator (version 1.11.136.2) as follows:
DocumentDB.GatewayService.exe has stopped working
For DocumentDB.GatewayService crash, I assumed that you need to collect the dump files and attach them with an email to askdocdb#microsoft.com. For more details, you could refer to DocumentDB Emulator troubleshooting.