Json to Elasticsearch via API - json

Question

I am trying to add a json file to elasticsearch which has around 30.000 lines and it is not properly formatted. I'm trying to upload it via Bulk API but I can't find a way to format it properly that actually works. I'm using Ubuntu 16.04LTS.
This is the format of the json:
{
"rt": "2018-11-20T12:57:32.292Z",
"source_info": { "ip": "0.0.60.50" },
"end": "2018-11-20T12:57:32.284Z",
"severity": "low",
"duid": "5b8d0a48ba59941314e8a97f",
"dhost": "004678",
"endpoint_type": "computer",
"endpoint_id": "8e7e2806-eaee-9436-6ab5-078361576290",
"suser": "Katerina",
"group": "PERIPHERALS",
"customer_id": "a263f4c8-942f-d4f4-5938-7c37013c03be",
"type": "Event::Endpoint::Device::AlertedOnly",
"id": "83d63d48-f040-2485-49b9-b4ff2ac4fad4",
"name": "Peripheral allowed: Samsung Galaxy S7 edge"
}
I do know that the format for the Bulk API needs {"index":{"_id":*}} before each json object in the file which it'd look like this:
{"index":{"_id":1}}
{
"rt": "2018-11-20T12:57:32.292Z",
"source_info": { "ip": "0.0.60.50" },
"end": "2018-11-20T12:57:32.284Z",
"severity": "low",
"duid": "5b8d0a48ba59941314e8a97f",
"dhost": "004678",
"endpoint_type": "computer",
"endpoint_id": "8e7e2806-eaee-9436-6ab5-078361576290",
"suser": "Katerina",
"group": "PERIPHERALS",
"customer_id": "a263f4c8-942f-d4f4-5938-7c37013c03be",
"type": "Event::Endpoint::Device::AlertedOnly",
"id": "83d63d48-f040-2485-49b9-b4ff2ac4fad4",
"name": "Peripheral allowed: Samsung Galaxy S7 edge"
}
If I insert the index id manually and then use this expression curl -s -H "Content-Type: application/x-ndjson" -XPOST localhost:92100/ivc/default/bulk?pretty --data-binary #results.json it will upload it with no errors.
My question is, how can I add the index id {"index":{"_id":*}} to each line of the json to make it ready to upload? Obviously the index id has to add +1 each line, is there any way to do it from the CLI?
Sorry if this post doesn't look as it should, I read millions of posts in Stack Overflow but this is my first one! #Desperate
Thank you very much in advance!

Answer 1

Your problem is that Elasticsearch expects the document to be a valid json on ONE line, like this :
{"index":{"_id":1}}
{"rt":"2018-11-20T12:57:32.292Z","source_info":{"ip":"0.0.60.50"},"end":"2018-11-20T12:57:32.284Z","severity":"low","duid":"5b8d0a48ba59941314e8a97f","dhost":"004678","endpoint_type":"computer","endpoint_id":"8e7e2806-eaee-9436-6ab5-078361576290","suser":"Katerina","group":"PERIPHERALS","customer_id":"a263f4c8-942f-d4f4-5938-7c37013c03be","type":"Event::Endpoint::Device::AlertedOnly","id":"83d63d48-f040-2485-49b9-b4ff2ac4fad4","name":"Peripheral allowed: Samsung Galaxy S7 edge"}
You have to find a way to transform your input file so that you have a document per line, then you'll be good to go with Val's solution.

Answer 2

Thank you for all the answers, they did help to get in me in the right direction.
I've made a bash script to automate the download, formatting and upload of the logs to Elasticsearch:
#!/bin/bash
echo "Downloading logs from Sophos Central. Please wait."
cd /home/user/ELK/Sophos-Central-SIEM-Integration/log
#This deletes the last batch of results
rm result.json
cd ..
#This triggers the script to download a new batch of logs from Sophos
./siem.py
cd /home/user/ELK/Sophos-Central-SIEM-Integration/log
#Adds newline at the beginning of the logs file
sed -i '1 i\{"index":{}}' result.json
#Adds indexes
sed -i '3~2s/^/{"index":{}}/' result.json
#Adds json file to elasticsearch
curl -s -H "Content-Type: application/x-ndjson" -XPOST localhost:9200/ivc/default/_bulk?pretty --data-binary #result.json
So that's how I achieved this. There might be easier options but this one did the trick for me. Hope it can be useful for someone else!
Again thank you everyone! :D