get file type from request body

backend/condition/condition_trigger_request.py

@@ -1,6 +1,14 @@
+from enum import Enum
 from pydantic import BaseModel
 
 
+class ConditionFileType(Enum):
+    LBWF = "LBWF"
+    Peabody = "Peabody"
+    # TODO: make these asset management systems rather than client names
+
+
 class ConditionTriggerRequest(BaseModel):
+    file_type: ConditionFileType
     trigger_file_path: str  # TODO: split into bucket/prefix?
     uprn_lookup_file_path: str  # TODO: split into bucket/prefix?

backend/condition/file_type.py

@@ -1,16 +0,0 @@
-from enum import Enum
-
-class FileType(Enum):
-    LBWF = "lbwf"
-    Peabody = "peabody"
-
-def detect_file_type(filepath: str) -> FileType:
-    path = filepath.lower()
-
-    if "lbwf" in path:
-        return FileType.LBWF
-    
-    if "peabody" in path:
-        return FileType.Peabody
-    
-    raise ValueError("Unrecognised file path")

backend/condition/handler.py

@@ -1,6 +1,9 @@
+import asyncio
+import json
 from typing import Mapping, Any
 from io import BytesIO
 
+from backend.condition.condition_trigger_request import ConditionTriggerRequest
 from backend.condition.lookups.uprn_lookup_s3 import UprnLookupS3
 from utils.logger import setup_logger
 from backend.condition.processor import process_file
@@ -15,8 +18,18 @@ def handler(event: Mapping[str, Any], context: Any) -> None:
         bucket="", key=""
     )  # TODO: replace with postgres implementation
 
-    dummy_stream = BytesIO(b"")
+    for record in event.get("Records", []):
+        try:
+            body_dict = json.loads(record["body"])
+            payload = ConditionTriggerRequest.model_validate(body_dict)
 
-    source_key = event.get("source_key", "unknown-source")
+            # fetch file from s3
 
-    process_file(dummy_stream, source_key)
+            # open file and send bytes to processor
+
+        except Exception as e:
+            logger.error(f"Failed to process record: {e}")
+
+    # dummy_stream = BytesIO(b"")
+
+    # process_file(dummy_stream, source_key)

backend/condition/local_runner.py

@@ -1,5 +1,6 @@
 from pathlib import Path
 
+from backend.condition.condition_trigger_request import ConditionFileType
 from backend.condition.lookups.uprn_lookup_csv import UprnLookupLocal
 from backend.condition.processor import process_file
 
@@ -25,15 +26,23 @@ def main() -> None:
         path / "peabody" / "PeabodyPropertymatched_Dec25_propref_UPRN.csv"
     )
     # filepaths = [lbwf_path, peabody_path]
-    # filepaths = [lbwf_path]
+    filepaths = [lbwf_path]
-    filepaths = [peabody_path]
+    # filepaths = [peabody_path]
 
     uprn_lookup = UprnLookupLocal(csv_path=peabody_uprn_lookup_path.as_posix())
 
+    def get_file_type(file_path: str) -> ConditionFileType:
+        if "peabody" in file_path:
+            return ConditionFileType.Peabody
+        if "lbwf" in file_path:
+            return ConditionFileType.LBWF
+
     for fp in filepaths:
         with fp.open("rb") as f:
             process_file(
-                file_stream=f, source_key=fp.as_posix(), uprn_lookup=uprn_lookup
+                file_stream=f,
+                file_type=get_file_type(fp.as_posix()),
+                uprn_lookup=uprn_lookup,
             )
 
 

backend/condition/parsing/factory.py

@@ -1,8 +1,8 @@
 from typing import Optional
+from backend.condition.condition_trigger_request import ConditionFileType
 from backend.condition.domain.mapping.lbwf.lbwf_mapper import LbwfMapper
 from backend.condition.domain.mapping.mapper import Mapper
 from backend.condition.domain.mapping.peabody.peabody_mapper import PeabodyMapper
-from backend.condition.file_type import FileType
 from backend.condition.lookups.uprn_lookup import UprnLookup
 from backend.condition.parsing.parser import Parser
 from backend.condition.parsing.lbwf_parser import LbwfParser
@@ -10,12 +10,12 @@ from backend.condition.parsing.peabody_parser import PeabodyParser
 
 
 def select_parser(
-    file_type: FileType, uprn_lookup: Optional[UprnLookup] = None
+    file_type: ConditionFileType, uprn_lookup: Optional[UprnLookup] = None
 ) -> Parser:
-    if file_type is FileType.LBWF:
+    if file_type is ConditionFileType.LBWF:
         return LbwfParser()
 
-    if file_type is FileType.Peabody:
+    if file_type is ConditionFileType.Peabody:
         if not uprn_lookup:
             raise ValueError(
                 "Cannot instantiate Peabody Parser without UPRN lookup being provided"
@@ -25,11 +25,11 @@ def select_parser(
     raise ValueError("Unrecognised file type, unable to instantiate Parser")
 
 
-def select_mapper(file_type: FileType) -> Mapper:
+def select_mapper(file_type: ConditionFileType) -> Mapper:
-    if file_type is FileType.LBWF:
+    if file_type is ConditionFileType.LBWF:
         return LbwfMapper()
 
-    if file_type is FileType.Peabody:
+    if file_type is ConditionFileType.Peabody:
         return PeabodyMapper()
 
     raise ValueError("Unrecognised file type, unable to instantiate Mapper")

backend/condition/processor.py

@@ -1,25 +1,22 @@
 from typing import Any, BinaryIO, List
 from datetime import datetime
 
+from backend.condition.condition_trigger_request import ConditionFileType
 from backend.condition.lookups.uprn_lookup import UprnLookup
 from utils.logger import setup_logger
 from backend.condition.domain.mapping.mapper import Mapper
 from backend.condition.domain.property_condition_survey import PropertyConditionSurvey
 from backend.condition.parsing.parser import Parser
 from backend.condition.persistence.condition_postgres import ConditionPostgres
-from backend.condition.file_type import FileType, detect_file_type
 from backend.condition.parsing.factory import select_parser, select_mapper
 
 logger = setup_logger()
 
 
 def process_file(
-    file_stream: BinaryIO, source_key: str, uprn_lookup: UprnLookup
+    file_stream: BinaryIO, file_type: ConditionFileType, uprn_lookup: UprnLookup
 ) -> None:
-    logger.info(f"[processor] Received file: {source_key}")
-
     # Instantiation
-    file_type: FileType = detect_file_type(source_key)
     parser: Parser = select_parser(file_type, uprn_lookup)
     mapper: Mapper = select_mapper(file_type)
     persistence = ConditionPostgres()

backend/condition/tests/test_detect_file_type.py

@@ -1,22 +0,0 @@
-import pytest
-
-from backend.condition.file_type import FileType, detect_file_type
-
-def test_detects_lbwf_file_type():
-    # arrange
-    file_path_str = "uploads/lbwf/Exaple Asset Data.xlsx"
-    expected_file_type = FileType.LBWF
-
-    # act
-    actual_file_type: FileType = detect_file_type(file_path_str)
-
-    # assert
-    assert expected_file_type == actual_file_type
-
-def test_unknown_filepath_raises_value_error():
-    # arrange
-    file_path_str = "unknown/Example Asset Data.xlsx"
-
-    # act + assert
-    with pytest.raises(ValueError):
-        detect_file_type(file_path_str)