Direct exporter - AWS S3 (#42)

* S3 trace exporter support
Signed-off-by: sachintendulkar576123 <sachin.tendulkar@beehyv.com>

Monocle_User_Guide.md

@@ -1,4 +1,4 @@
-#Monocle User Guide
+# Monocle User Guide
 
 ## Monocle Concepts
 ### Traces
@@ -13,15 +13,21 @@ It’s typically the workflow code components of an application that generate th
 ``` 
     > pip install monocle_apptrace
 ```
+- For AWS support (to upload traces to AWS), install with the aws extra:
+```
+    > pip install monocle_apptrace[aws]
+```
+
 - You can locally build and install Monocle library from source
 ```
-> pip install .
+    > pip install .
 ```
 - Install the optional test dependencies listed against dev in pyproject.toml in editable mode
 ```
-> pip install -e ".[dev]"
+    > pip install -e ".[dev]"
 ```
 
+
 ## Using Monocle with your application to generate traces
 ### Enable Monocle tracing
 You need to import monocle package and invoke the API ``setup_monocle_telemetry(workflow=<workflow-name>)`` to enable the tracing. The 'workflow-name' is what you define to identify the give application workflow, for example "customer-chatbot". Monocle trace will include this name in every trace. The trace output will include a list of spans in the traces. You can print the output on the console or send it to an HTTP endpoint.
@@ -48,7 +54,7 @@ chain.invoke({"number":2})
 # Request callbacks: Finally, let's use the request `callbacks` to achieve the same result
 chain = LLMChain(llm=llm, prompt=prompt)
 chain.invoke({"number":2}, {"callbacks":[handler]})
-    
+
 ```
 
 ### Accessing monocle trace
@@ -63,6 +69,9 @@ setup_monocle_telemetry(workflow_name = "simple_math_app",
 ```
 To print the trace on the console, use ```ConsoleSpanExporter()``` instead of ```FileSpanExporter()```
 
+For AWS:
+    Install the AWS support as shown in the setup section, then use  ```S3SpanExporter()``` to upload the traces to an S3 bucket.
+
 ### Leveraging Monocle's extensibility to handle customization 
 When the out of box features from app frameworks are not sufficent, the app developers have to add custom code. For example, if you are extending a LLM class in LlamaIndex to use a model hosted in NVIDIA Triton. This new class is not know to Monocle. You can specify this new class method part of Monocle enabling API and it will be able to trace it.
 

pyproject.toml

@@ -45,6 +45,9 @@ dev = [
   'llama-index-vector-stores-chroma==0.1.9',
   'parameterized==0.9.0'
 ]
+aws = [
+    'boto3==1.35.19',
+]
 
 [project.urls]
 Homepage = "https://github.com/monocle2ai/monocle"

src/monocle_apptrace/exporters/aws/s3_exporter.py

@@ -0,0 +1,151 @@
+import os
+import time
+import random
+import datetime
+import logging
+import asyncio
+import boto3
+from botocore.exceptions import ClientError
+from opentelemetry.sdk.trace import ReadableSpan
+from opentelemetry.sdk.trace.export import SpanExporter, SpanExportResult
+from monocle_apptrace.exporters.base_exporter import SpanExporterBase
+from typing import Sequence
+
+logger = logging.getLogger(__name__)
+
+class S3SpanExporter(SpanExporterBase):
+    def __init__(self, bucket_name=None, region_name="us-east-1"):
+        super().__init__()
+        # Use environment variables if credentials are not provided
+        DEFAULT_FILE_PREFIX = "monocle_trace__"
+        DEFAULT_TIME_FORMAT = "%Y-%m-%d__%H.%M.%S"
+        self.max_batch_size = 500
+        self.export_interval = 1
+        self.s3_client = boto3.client(
+            's3',
+            aws_access_key_id=os.getenv('AWS_ACCESS_KEY_ID'),
+            aws_secret_access_key=os.getenv('AWS_SECRET_ACCESS_KEY'),
+            region_name=region_name,
+        )
+        self.bucket_name = bucket_name or os.getenv('AWS_S3_BUCKET_NAME','default-bucket')
+        self.file_prefix = DEFAULT_FILE_PREFIX
+        self.time_format = DEFAULT_TIME_FORMAT
+        self.export_queue = []
+        self.last_export_time = time.time()
+
+        # Check if bucket exists or create it
+        if not self.__bucket_exists(self.bucket_name):
+            try:
+                if region_name == "us-east-1":
+                    self.s3_client.create_bucket(Bucket=self.bucket_name)
+                else:
+                    self.s3_client.create_bucket(
+                    Bucket=self.bucket_name,
+                    CreateBucketConfiguration={'LocationConstraint': region_name}
+                     )
+                logger.info(f"Bucket {self.bucket_name} created successfully.")
+            except ClientError as e:
+                logger.error(f"Error creating bucket {self.bucket_name}: {e}")
+                raise e
+
+    def __bucket_exists(self, bucket_name):
+        try:
+            # Check if the bucket exists by calling head_bucket
+            self.s3_client.head_bucket(Bucket=bucket_name)
+            return True
+        except ClientError as e:
+            error_code = e.response['Error']['Code']
+            if error_code == '404':
+                # Bucket not found
+                logger.error(f"Bucket {bucket_name} does not exist (404).")
+                return False
+            elif error_code == '403':
+                # Permission denied
+                logger.error(f"Access to bucket {bucket_name} is forbidden (403).")
+                raise PermissionError(f"Access to bucket {bucket_name} is forbidden.")
+            elif error_code == '400':
+                # Bad request or malformed input
+                logger.error(f"Bad request for bucket {bucket_name} (400).")
+                raise ValueError(f"Bad request for bucket {bucket_name}.")
+            else:
+                # Other client errors
+                logger.error(f"Unexpected error when accessing bucket {bucket_name}: {e}")
+                raise e
+        except TypeError as e:
+            # Handle TypeError separately
+            logger.error(f"Type error while checking bucket existence: {e}")
+            raise e
+
+    def export(self, spans: Sequence[ReadableSpan]) -> SpanExportResult:
+        """Synchronous export method that internally handles async logic."""
+        try:
+            # Run the asynchronous export logic in an event loop
+            asyncio.run(self.__export_async(spans))
+            return SpanExportResult.SUCCESS
+        except Exception as e:
+            logger.error(f"Error exporting spans: {e}")
+            return SpanExportResult.FAILURE
+
+    async def __export_async(self, spans: Sequence[ReadableSpan]) -> SpanExportResult:
+        try:
+            # Add spans to the export queue
+            for span in spans:
+                self.export_queue.append(span)
+                # If the queue reaches MAX_BATCH_SIZE, export the spans
+                if len(self.export_queue) >= self.max_batch_size:
+                    await self.__export_spans()
+
+            # Check if it's time to force a flush
+            current_time = time.time()
+            if current_time - self.last_export_time >= self.export_interval:
+                await self.__export_spans()  # Export spans if time interval has passed
+                self.last_export_time = current_time  # Reset the last export time
+
+            return SpanExportResult.SUCCESS
+        except Exception as e:
+            logger.error(f"Error exporting spans: {e}")
+            return SpanExportResult.FAILURE
+
+    def __serialize_spans(self, spans: Sequence[ReadableSpan]) -> str:
+        try:
+            # Serialize spans to JSON or any other format you prefer
+            span_data_list = [span.to_json() for span in spans]
+            return "[" + ", ".join(span_data_list) + "]"
+        except Exception as e:
+            logger.error(f"Error serializing spans: {e}")
+            raise
+
+    async def __export_spans(self):
+        if len(self.export_queue) == 0:
+            return
+
+        # Take a batch of spans from the queue
+        batch_to_export = self.export_queue[:self.max_batch_size]
+        serialized_data = self.__serialize_spans(batch_to_export)
+        self.export_queue = self.export_queue[self.max_batch_size:]
+        try:
+            if asyncio.get_event_loop().is_running():
+                task = asyncio.create_task(self._retry_with_backoff(self.__upload_to_s3, serialized_data))
+                await task
+            else:
+                await self._retry_with_backoff(self.__upload_to_s3, serialized_data)
+
+        except Exception as e:
+            logger.error(f"Failed to upload span batch: {e}")
+
+    def __upload_to_s3(self, span_data_batch: str):
+        current_time = datetime.datetime.now().strftime(self.time_format)
+        file_name = f"{self.file_prefix}{current_time}.json"
+        self.s3_client.put_object(
+            Bucket=self.bucket_name,
+            Key=file_name,
+            Body=span_data_batch
+        )
+        logger.info(f"Span batch uploaded to AWS S3 as {file_name}.")
+
+    async def force_flush(self, timeout_millis: int = 30000) -> bool:
+        await self.__export_spans()  # Export any remaining spans in the queue
+        return True
+
+    def shutdown(self) -> None:
+        logger.info("S3SpanExporter has been shut down.")

src/monocle_apptrace/exporters/base_exporter.py

@@ -0,0 +1,47 @@
+import time
+import random
+import logging
+from abc import ABC, abstractmethod
+from azure.core.exceptions import ServiceRequestError, ClientAuthenticationError
+from opentelemetry.sdk.trace import ReadableSpan
+from opentelemetry.sdk.trace.export import SpanExporter, SpanExportResult
+from typing import Sequence
+import asyncio
+
+logger = logging.getLogger(__name__)
+
+class SpanExporterBase(ABC):
+    def __init__(self):
+        self.backoff_factor = 2
+        self.max_retries = 10
+        self.export_queue = []
+        self.last_export_time = time.time()
+
+    @abstractmethod
+    async def export(self, spans: Sequence[ReadableSpan]) -> SpanExportResult:
+        pass
+
+    @abstractmethod
+    async def force_flush(self, timeout_millis: int = 30000) -> bool:
+        pass
+
+    def shutdown(self) -> None:
+        pass
+
+    async def _retry_with_backoff(self, func, *args, **kwargs):
+        """Handle retries with exponential backoff."""
+        attempt = 0
+        while attempt < self.max_retries:
+            try:
+                return func(*args, **kwargs)
+            except ServiceRequestError as e:
+                logger.warning(f"Network connectivity error: {e}. Retrying in {self.backoff_factor ** attempt} seconds...")
+                sleep_time = self.backoff_factor * (2 ** attempt) + random.uniform(0, 1)
+                await asyncio.sleep(sleep_time)
+                attempt += 1
+            except ClientAuthenticationError as e:
+                logger.error(f"Failed to authenticate: {str(e)}")
+                break
+
+        logger.error("Max retries exceeded.")
+        raise ServiceRequestError(message="Max retries exceeded.")