SK-2824 add sample and readme for custom headers

README.md

@@ -23,6 +23,7 @@ The Skyflow Java SDK is designed to help with integrating Skyflow into a Java ba
   - [Bulk Detokenize](#bulk-detokenize)
   - [Bulk Tokenize](#bulk-tokenize)
   - [Bulk Delete Tokens](#bulk-delete-tokens)
+  - [Custom request headers](#custom-request-headers)
 - [Authenticate with bearer tokens](#authenticate-with-bearer-tokens)
   - [Generate a bearer token](#generate-a-bearer-token)
   - [Generate bearer tokens with context](#generate-bearer-tokens-with-context)
@@ -1461,6 +1462,74 @@ Sample response:
 }
 ```
 
+## Custom request headers
+To include custom HTTP headers in outgoing requests, provide a `RequestInterceptor` via the options object for any vault operation. The headers you can set are defined by the `CustomHeaderKey` enum.   
+
+### Available custom header keys
+
+| `CustomHeaderKey` | HTTP header name |
+|---|---|
+| `SkyflowAccountID` | `x-skyflow-account-id` |
+| `SkyflowAccountName` | `x-skyflow-account-name` |
+| `RequestIDHeader` | `x-request-id` |
+
+### Example
+
+```java
+import com.skyflow.enums.CustomHeaderKey;
+import com.skyflow.errors.SkyflowException;
+import com.skyflow.vault.data.InsertOptions;
+import com.skyflow.vault.data.InsertRecord;
+import com.skyflow.vault.data.InsertRequest;
+import com.skyflow.vault.data.InsertResponse;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class BulkInsertWithHeaders {
+    public static void main(String[] args) {
+        try {
+            // Initialize Skyflow client
+
+            HashMap<String, Object> data = new HashMap<>();
+            data.put("<YOUR_COLUMN_NAME>", "<YOUR_VALUE>");
+            InsertRecord record = InsertRecord.builder()
+                    .data(data)
+                    .table("<YOUR_TABLE_NAME>")
+                    .build();
+
+            ArrayList<InsertRecord> records = new ArrayList<>();
+            records.add(record);
+
+            InsertRequest insertRequest = InsertRequest.builder()
+                    .records(records)
+                    .build();
+
+            // Pass custom headers via an interceptor in the options object
+            InsertOptions options = InsertOptions.builder()
+                    .interceptor(context -> {
+                        context.addHeader(CustomHeaderKey.RequestIDHeader, "<YOUR_REQUEST_ID>");
+                    })
+                    .build();
+
+            InsertResponse insertResponse = skyflowClient.vault().bulkInsert(insertRequest, options);
+            System.out.println(insertResponse);
+        } catch (SkyflowException e) {
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+The same pattern applies to all operations using the corresponding options class:
+
+| Operation | Options class |
+|---|---|
+| `bulkInsert` / `bulkInsertAsync` | `InsertOptions` |
+| `bulkDetokenize` / `bulkDetokenizeAsync` | `DetokenizeOptions` |
+| `bulkTokenize` / `bulkTokenizeAsync` | `TokenizeOptions` |
+| `bulkDeleteTokens` / `bulkDeleteTokensAsync` | `DeleteTokensOptions` |
+
 # Authenticate with bearer tokens
 
 This section covers methods for generating and managing tokens to authenticate API calls:

samples/src/main/java/com/example/vault/CustomHeaderExample.java

@@ -0,0 +1,88 @@
+package com.example.vault;
+
+import com.skyflow.Skyflow;
+import com.skyflow.config.Credentials;
+import com.skyflow.config.VaultConfig;
+import com.skyflow.enums.CustomHeaderKey;
+import com.skyflow.enums.Env;
+import com.skyflow.enums.LogLevel;
+import com.skyflow.enums.UpsertType;
+import com.skyflow.vault.data.InsertOptions;
+import com.skyflow.vault.data.InsertRecord;
+import com.skyflow.vault.data.InsertRequest;
+import com.skyflow.vault.data.InsertResponse;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+
+public class CustomHeaderExample {
+    public static void main(String[] args) {
+        try {
+            // Step 1: Initialize credentials with the path to your service account key file
+//            String filePath = "<YOUR_CREDENTIALS_FILE_PATH>";
+            Credentials credentials = new Credentials();
+            credentials.setToken("<BEARER_TOKEN>");
+
+            // Step 2: Configure the vault with required parameters
+            VaultConfig vaultConfig = new VaultConfig();
+            vaultConfig.setVaultId("<VAULT_ID>");
+            vaultConfig.setClusterId("<CLUSTER_ID>");
+            vaultConfig.setEnv(Env.DEV);
+            vaultConfig.setCredentials(credentials);
+
+            // Step 3: Create Skyflow client instance with error logging
+            Skyflow skyflowClient = Skyflow.builder()
+                    .setLogLevel(LogLevel.DEBUG)
+                    .addVaultConfig(vaultConfig)
+                    .build();
+            ArrayList<InsertRecord> insertRecords = new ArrayList<>();
+
+            for (int i = 0; i < 100; i++) {
+                // Step 4: Prepare first record for insertion
+                HashMap<String, Object> recordData1 = new HashMap<>();
+                recordData1.put("<YOUR_COLUMN_NAME_2>", "<YOUR_VALUE_1>");
+
+                InsertRecord insertRecord1 = InsertRecord
+                        .builder()
+                        .data(recordData1)
+                        .build();
+
+                // Step 6: Combine records into a Insert record list
+                insertRecords.add(insertRecord1);
+            }
+            ArrayList<String> upsertColumns = new ArrayList<>();
+            upsertColumns.add("<UPSERT_COLUMN_NAME>");
+            InsertRequest request = InsertRequest.builder()
+                    .table("<TABLE_NAME>")
+                    .upsert(upsertColumns)
+                    .upsertType(UpsertType.REPLACE)
+                    .records(insertRecords)
+                    .build();
+            InsertOptions options = InsertOptions.builder()
+                    .interceptor((ctx) ->{
+                        ctx.addHeader(CustomHeaderKey.RequestIDHeader, getRequestId()); // pass the request id here
+                    })
+                    .build();
+            // Step 8: Execute the async bulk insert operation and handle response using callbacks
+            CompletableFuture<InsertResponse> future = skyflowClient.vault().bulkInsertAsync(request, options);
+            // Add success and error callbacks
+            future.thenAccept(response -> {
+                System.out.println("Async bulk insert resolved with response:\t" + response);
+            }).exceptionally(throwable -> {
+                System.err.println("Async bulk insert rejected with error:\t" + throwable.getMessage());
+                throw new CompletionException(throwable);
+            });
+        } catch (Exception e) {
+            // Step 9: Handle any synchronous errors that occur during setup
+            System.err.println("Error in Skyflow operations:\t" + e.getMessage());
+        }
+    }
+    public static String getRequestId(){
+        String id = UUID.randomUUID().toString();
+        System.out.println("id=>"+ id);
+        return id;
+    }
+}