feat: adding functionality to delete all memory records in namespace

[ShreyP88]

Summary

• Adding a to delete all long-term memory records within a specific namespace using batch operations.
  • Retrieves all memory records in the specified namespace
  • Performs batch deletion using batch_delete_memory_records API
  • Returns deletion results with success/failure counts

Testing

Added 3 test cases covering:
• Successful deletion of multiple records
• Empty namespace handling (no API call made)
• ClientError exception handling

tests/bedrock_agentcore/memory/test_session.py::TestSessionManager::test_delete_all_long_term_memories_in_namespace_success PASSED [ 33%]
tests/bedrock_agentcore/memory/test_session.py::TestSessionManager::test_delete_all_long_term_memories_in_namespace_empty PASSED [ 66%]
tests/bedrock_agentcore/memory/test_session.py::TestSessionManager::test_delete_all_long_term_memories_in_namespace_client_error PASSED [100%]

Manual Test:

    # Initialize the memory session manager
    manager = MemorySessionManager(
        memory_id="pantsssssdubs-HlUQcm8wdt",
        region_name="us-east-1"
    )
    
    namespace = "example/demo"
    
    print("🚀 Starting memory operations demo...")
    
    # Step 1: Batch create memory records
    print("\n1️⃣ Creating memory records...")
    memory_records = [
        {
            "requestIdentifier": "req-1",
            "content": {"text": "Python is a great programming language"},
            "namespaces": [namespace],
            "timestamp": "2024-01-01T12:00:00Z"
        },
        {
            "requestIdentifier": "req-2", 
            "content": {"text": "AWS Bedrock AgentCore provides memory services"},
            "namespaces": [namespace],
            "timestamp": "2024-01-01T12:01:00Z"
        },
        {
            "requestIdentifier": "req-3",
            "content": {"text": "Batch operations are efficient for bulk data"},
            "namespaces": [namespace],
            "timestamp": "2024-01-01T12:02:00Z"
        }
    ]
    
    create_result = manager.batch_create_memory_records(
        memoryId=manager._memory_id,
        records=memory_records
    )
    
    successful_creates = len(create_result.get("successfulRecords", []))
    print(f"✅ Created {successful_creates} memory records")
    
    # Wait for records to be indexed
    print("\n⏳ Waiting 10 seconds for records to be indexed...")
    time.sleep(10)
    
    # Step 2: List memory records in the namespace
    print(f"\n2️⃣ Listing memory records in namespace '{namespace}'...")
    records = manager.list_long_term_memory_records(namespace_prefix=namespace)
    
    print(f"📋 Found {len(records)} records:")
    for i, record in enumerate(records, 1):
        content = record.get("content", {}).get("text", "No content")
        record_id = record.get("memoryRecordId", "No ID")
        print(f"  {i}. {content[:50]}... (ID: {record_id})")
    
    # Step 3: Delete all memory records in the namespace
    print(f"\n3️⃣ Deleting all memory records in namespace '{namespace}'...")
    delete_result = manager.delete_all_long_term_memories_in_namespace(namespace)
    
    successful_deletes = len(delete_result.get("successfulRecords", []))
    failed_deletes = len(delete_result.get("failedRecords", []))
    
    print(f"🗑️ Deletion complete: {successful_deletes} successful, {failed_deletes} failed")

[codecov-commenter]

Codecov Report

❌ Patch coverage is 47.36842% with 20 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@90f04bf). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/bedrock_agentcore/memory/session.py	47.36%	19 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #147   +/-   ##
=======================================
  Coverage        ?   88.74%           
=======================================
  Files           ?       24           
  Lines           ?     2452           
  Branches        ?      346           
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  Hits            ?     2176           
  Misses          ?      170           
  Partials        ?      106           

Flag	Coverage Δ
unittests	88.74% <47.36%> (?)

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