Send log data to Azure Monitor by using the HTTP Data Collector API (deprecated)

# Replace with your Workspace ID
$CustomerId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"  

# Replace with your Primary Key
$SharedKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

# Specify the name of the record type that you'll be creating
$LogType = "MyRecordType"

# Optional name of a field that includes the timestamp for the data. If the time field is not specified, Azure Monitor assumes the time is the message ingestion time
$TimeStampField = ""


# Create two records with the same set of properties to create
$json = @"
[{  "StringValue": "MyString1",
    "NumberValue": 42,
    "BooleanValue": true,
    "DateValue": "2019-09-12T20:00:00.625Z",
    "GUIDValue": "9909ED01-A74C-4874-8ABF-D2678E3AE23D"
},
{   "StringValue": "MyString2",
    "NumberValue": 43,
    "BooleanValue": false,
    "DateValue": "2019-09-12T20:00:00.625Z",
    "GUIDValue": "8809ED01-A74C-4874-8ABF-D2678E3AE23D"
}]
"@

# Create the function to create the authorization signature
Function Build-Signature ($customerId, $sharedKey, $date, $contentLength, $method, $contentType, $resource)
{
    $xHeaders = "x-ms-date:" + $date
    $stringToHash = $method + "`n" + $contentLength + "`n" + $contentType + "`n" + $xHeaders + "`n" + $resource

    $bytesToHash = [Text.Encoding]::UTF8.GetBytes($stringToHash)
    $keyBytes = [Convert]::FromBase64String($sharedKey)

    $sha256 = New-Object System.Security.Cryptography.HMACSHA256
    $sha256.Key = $keyBytes
    $calculatedHash = $sha256.ComputeHash($bytesToHash)
    $encodedHash = [Convert]::ToBase64String($calculatedHash)
    $authorization = 'SharedKey {0}:{1}' -f $customerId,$encodedHash
    return $authorization
}

# Create the function to create and post the request
Function Post-LogAnalyticsData($customerId, $sharedKey, $body, $logType)
{
    $method = "POST"
    $contentType = "application/json"
    $resource = "/api/logs"
    $rfc1123date = [DateTime]::UtcNow.ToString("r")
    $contentLength = $body.Length
    $signature = Build-Signature `
        -customerId $customerId `
        -sharedKey $sharedKey `
        -date $rfc1123date `
        -contentLength $contentLength `
        -method $method `
        -contentType $contentType `
        -resource $resource
    $uri = "https://" + $customerId + ".ods.opinsights.azure.cn" + $resource + "?api-version=2016-04-01"

    $headers = @{
        "Authorization" = $signature;
        "Log-Type" = $logType;
        "x-ms-date" = $rfc1123date;
        "time-generated-field" = $TimeStampField;
    }

    $response = Invoke-WebRequest -Uri $uri -Method $method -ContentType $contentType -Headers $headers -Body $body -UseBasicParsing
    return $response.StatusCode

}

# Submit the data to the API endpoint
Post-LogAnalyticsData -customerId $customerId -sharedKey $sharedKey -body ([System.Text.Encoding]::UTF8.GetBytes($json)) -logType $logType  

using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace OIAPIExample
{
	class ApiExample
	{
		// An example JSON object, with key/value pairs
		static string json = @"[{""DemoField1"":""DemoValue1"",""DemoField2"":""DemoValue2""},{""DemoField3"":""DemoValue3"",""DemoField4"":""DemoValue4""}]";

		// Update customerId to your Log Analytics workspace ID
		static string customerId = "xxxxxxxx-xxx-xxx-xxx-xxxxxxxxxxxx";

		// For sharedKey, use either the primary or the secondary Connected Sources client authentication key   
		static string sharedKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

		// LogName is name of the event type that is being submitted to Azure Monitor
		static string LogName = "DemoExample";

		// You can use an optional field to specify the timestamp from the data. If the time field is not specified, Azure Monitor assumes the time is the message ingestion time
		static string TimeStampField = "";

		static void Main()
		{
			// Create a hash for the API signature
			var datestring = DateTime.UtcNow.ToString("r");
			var jsonBytes = Encoding.UTF8.GetBytes(json);
			string stringToHash = "POST\n" + jsonBytes.Length + "\napplication/json\n" + "x-ms-date:" + datestring + "\n/api/logs";
			string hashedString = BuildSignature(stringToHash, sharedKey);
			string signature = "SharedKey " + customerId + ":" + hashedString;

			PostData(signature, datestring, json);
		}

		// Build the API signature
		public static string BuildSignature(string message, string secret)
		{
			var encoding = new System.Text.ASCIIEncoding();
			byte[] keyByte = Convert.FromBase64String(secret);
			byte[] messageBytes = encoding.GetBytes(message);
			using (var hmacsha256 = new HMACSHA256(keyByte))
			{
				byte[] hash = hmacsha256.ComputeHash(messageBytes);
				return Convert.ToBase64String(hash);
			}
		}

		// Send a request to the POST API endpoint
		public static void PostData(string signature, string date, string json)
		{
			try
			{
				string url = "https://" + customerId + ".ods.opinsights.azure.cn/api/logs?api-version=2016-04-01";

				System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
				client.DefaultRequestHeaders.Add("Accept", "application/json");
				client.DefaultRequestHeaders.Add("Log-Type", LogName);
				client.DefaultRequestHeaders.Add("Authorization", signature);
				client.DefaultRequestHeaders.Add("x-ms-date", date);
				client.DefaultRequestHeaders.Add("time-generated-field", TimeStampField);

				// If charset=utf-8 is part of the content-type header, the API call may return forbidden.
				System.Net.Http.HttpContent httpContent = new StringContent(json, Encoding.UTF8);
				httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
				Task<System.Net.Http.HttpResponseMessage> response = client.PostAsync(new Uri(url), httpContent);

				System.Net.Http.HttpContent responseContent = response.Result.Content;
				string result = responseContent.ReadAsStringAsync().Result;
				Console.WriteLine("Return Result: " + result);
			}
			catch (Exception excep)
			{
				Console.WriteLine("API Post Exception: " + excep.Message);
			}
		}
	}
}

import json
import requests
import datetime
import hashlib
import hmac
import base64

# Update the customer ID to your Log Analytics workspace ID
customer_id = 'xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'

# For the shared key, use either the primary or the secondary Connected Sources client authentication key   
shared_key = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

# The log type is the name of the event that is being submitted
log_type = 'WebMonitorTest'

# An example JSON web monitor object
json_data = [{
   "slot_ID": 12345,
    "ID": "5cdad72f-c848-4df0-8aaa-ffe033e75d57",
    "availability_Value": 100,
    "performance_Value": 6.954,
    "measurement_Name": "last_one_hour",
    "duration": 3600,
    "warning_Threshold": 0,
    "critical_Threshold": 0,
    "IsActive": "true"
},
{   
    "slot_ID": 67890,
    "ID": "b6bee458-fb65-492e-996d-61c4d7fbb942",
    "availability_Value": 100,
    "performance_Value": 3.379,
    "measurement_Name": "last_one_hour",
    "duration": 3600,
    "warning_Threshold": 0,
    "critical_Threshold": 0,
    "IsActive": "false"
}]
body = json.dumps(json_data)

#####################
######Functions######  
#####################

# Build the API signature
def build_signature(customer_id, shared_key, date, content_length, method, content_type, resource):
    x_headers = 'x-ms-date:' + date
    string_to_hash = method + "\n" + str(content_length) + "\n" + content_type + "\n" + x_headers + "\n" + resource
    bytes_to_hash = bytes(string_to_hash, encoding="utf-8")  
    decoded_key = base64.b64decode(shared_key)
    encoded_hash = base64.b64encode(hmac.new(decoded_key, bytes_to_hash, digestmod=hashlib.sha256).digest()).decode()
    authorization = "SharedKey {}:{}".format(customer_id,encoded_hash)
    return authorization

# Build and send a request to the POST API
def post_data(customer_id, shared_key, body, log_type):
    method = 'POST'
    content_type = 'application/json'
    resource = '/api/logs'
    rfc1123date = datetime.datetime.utcnow().strftime('%a, %d %b %Y %H:%M:%S GMT')
    content_length = len(body)
    signature = build_signature(customer_id, shared_key, rfc1123date, content_length, method, content_type, resource)
    uri = 'https://' + customer_id + '.ods.opinsights.azure.cn' + resource + '?api-version=2016-04-01'

    headers = {
        'content-type': content_type,
        'Authorization': signature,
        'Log-Type': log_type,
        'x-ms-date': rfc1123date
    }

    response = requests.post(uri,data=body, headers=headers)
    if (response.status_code >= 200 and response.status_code <= 299):
        print('Accepted')
    else:
        print("Response code: {}".format(response.status_code))

post_data(customer_id, shared_key, body, log_type)

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.springframework.http.MediaType;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Base64;
import java.util.Calendar;
import java.util.TimeZone;
import java.util.Locale;

import static org.springframework.http.HttpHeaders.CONTENT_TYPE;

public class ApiExample {

  private static final String workspaceId = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
  private static final String sharedKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
  private static final String logName = "DemoExample";
  /*
  You can use an optional field to specify the timestamp from the data. If the time field is not specified,
  Azure Monitor assumes the time is the message ingestion time
   */
  private static final String timestamp = "";
  private static final String json = "{\"name\": \"test\",\n" + "  \"id\": 1\n" + "}";
  private static final String RFC_1123_DATE = "EEE, dd MMM yyyy HH:mm:ss z";

  public static void main(String[] args) throws IOException, NoSuchAlgorithmException, InvalidKeyException {
    String dateString = getServerTime();
    String httpMethod = "POST";
    String contentType = "application/json";
    String xmsDate = "x-ms-date:" + dateString;
    String resource = "/api/logs";
    String stringToHash = String
        .join("\n", httpMethod, String.valueOf(json.getBytes(StandardCharsets.UTF_8).length), contentType,
            xmsDate , resource);
    String hashedString = getHMAC256(stringToHash, sharedKey);
    String signature = "SharedKey " + workspaceId + ":" + hashedString;

    postData(signature, dateString, json);
  }

  private static String getServerTime() {
    Calendar calendar = Calendar.getInstance();
    SimpleDateFormat dateFormat = new SimpleDateFormat(RFC_1123_DATE, Locale.US);
    dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
    return dateFormat.format(calendar.getTime());
  }

  private static void postData(String signature, String dateString, String json) throws IOException {
    String url = "https://" + workspaceId + ".ods.opinsights.azure.cn/api/logs?api-version=2016-04-01";
    HttpPost httpPost = new HttpPost(url);
    httpPost.setHeader("Authorization", signature);
    httpPost.setHeader(CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
    httpPost.setHeader("Log-Type", logName);
    httpPost.setHeader("x-ms-date", dateString);
    httpPost.setHeader("time-generated-field", timestamp);
    httpPost.setEntity(new StringEntity(json));
    try(CloseableHttpClient httpClient = HttpClients.createDefault()){
      HttpResponse response = httpClient.execute(httpPost);
      int statusCode = response.getStatusLine().getStatusCode();
      System.out.println("Status code: " + statusCode);
    }
  }

  private static String getHMAC256(String input, String key) throws InvalidKeyException, NoSuchAlgorithmException {
    String hash;
    Mac sha256HMAC = Mac.getInstance("HmacSHA256");
    Base64.Decoder decoder = Base64.getDecoder();
    SecretKeySpec secretKey = new SecretKeySpec(decoder.decode(key.getBytes(StandardCharsets.UTF_8)), "HmacSHA256");
    sha256HMAC.init(secretKey);
    Base64.Encoder encoder = Base64.getEncoder();
    hash = new String(encoder.encode(sha256HMAC.doFinal(input.getBytes(StandardCharsets.UTF_8))));
    return hash;
  }

}