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app.py
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app.py
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from fastapi import FastAPI, HTTPException
from fastapi.responses import FileResponse
from fastapi.security import OAuth2PasswordBearer
from marketplace_standard_app_api.models.transformation import (
TransformationCreateResponse,
TransformationId,
TransformationListResponse,
TransformationModel,
TransformationState,
TransformationStateResponse,
TransformationUpdateModel,
TransformationUpdateResponse,
)
from marketplace_standard_app_api.routers import object_storage
from models.transformation import TransformationInput
from simulation_controller.simulation_manager import SimulationManager
app = FastAPI()
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
simulation_manager = SimulationManager()
@app.get(
path="/health",
summary="Check if application is running.",
)
def heartbeat():
"""Checks if the application is running and available"""
return "MatCalc app is up and running"
@app.post(
"/transformations",
operation_id="newTransformation",
summary="Create a new transformation",
response_model=TransformationCreateResponse,
)
async def create_transformation(
payload: TransformationInput,
) -> TransformationCreateResponse:
"""Create a new transformation."""
id = simulation_manager.create_simulation(payload)
return {"id": id}
@app.get(
"/transformations/{transformation_id}",
summary="Get a transformation",
response_model=TransformationModel,
operation_id="getTransformation",
responses={
404: {"description": "Not Found."},
400: {"description": "Error executing get operation"},
},
)
def get_simulation(transformation_id: TransformationId):
try:
return simulation_manager.get_simulation(str(transformation_id))
except KeyError as ke:
raise HTTPException(status_code=404, detail=str(ke))
except RuntimeError as re:
raise HTTPException(status_code=400, detail=str(re))
@app.patch(
"/transformations/{transformation_id}",
operation_id="updateTransformation",
summary="Update the state of the simulation.",
response_model=TransformationUpdateResponse,
responses={
404: {"description": "Not Found."},
409: {"description": "Requested state not available"},
400: {"description": "Error executing update operation"},
},
)
def update_simulation(
transformation_id: TransformationId, payload: TransformationUpdateModel
) -> TransformationUpdateResponse:
"""Update an existing simulation.
Args:
transformation_id (TransformationId): ID of the transformation to be updated.
payload (TransformationUpdateModel): State to which transformation is to be updated to.
Returns:
TransformationUpdateResponse: Returns ID and updated state of the transformation.
""" # noqa: E501
state = payload.state
try:
if state == TransformationState.RUNNING:
simulation_manager.run_simulation(str(transformation_id))
elif state == TransformationState.STOPPED:
simulation_manager.stop_simulation(str(transformation_id))
else:
msg = f"{state} is not a supported state."
raise HTTPException(status_code=400, detail=msg)
return {"id": transformation_id, "state": state}
except KeyError as ke:
raise HTTPException(
status_code=404,
detail=f"Transformation not found: {transformation_id}",
) from ke
except RuntimeError as re:
raise HTTPException(status_code=409, detail="Runtime error") from re
except Exception as e:
msg = f"Unexpected error while changing state of simulation \
{transformation_id}. Error message: {e}"
raise HTTPException(status_code=400, detail=msg) from e
@app.get(
"/transformations/{transformation_id}/state",
operation_id="getTransformationState",
summary="Get the state of the simulation.",
response_model=TransformationStateResponse,
responses={404: {"description": "Unknown simulation"}},
)
def get_simulation_state(
transformation_id: TransformationId,
) -> TransformationStateResponse:
"""Get the state of a simulation.
Args:
transformation_id (TransformationId): ID of the simulation
Returns:
TransformationStateResponse: The state of the simulation.
"""
try:
state = simulation_manager.get_simulation_state(str(transformation_id))
return {"id": transformation_id, "state": state}
except KeyError as ke:
raise HTTPException(
status_code=404, detail="Simulation not found"
) from ke
except Exception as e:
msg = (
"Unexpected error while querying for the status of simulation "
f"{transformation_id}. Error message: {e}"
)
raise HTTPException(status_code=400, detail=msg) from e
@app.get(
"/transformations",
operation_id="getTransformationList",
summary="Get all simulations.",
response_model=TransformationListResponse,
)
def get_simulations() -> TransformationListResponse:
"""Fetch all simulations
Returns:
TransformationListResponse: List of simulations.
"""
try:
items = simulation_manager.get_simulations()
return {"items": items}
except Exception as e:
msg = (
"Unexpected error while fetching the list of simulations. "
f"Error message: {e}"
)
# logging.error(msg)
raise HTTPException(status_code=400, detail=msg) from e
@app.delete(
"/transformations/{transformation_id}",
operation_id="deleteTransformation",
summary="Delete a transformation",
)
def delete_simulation(transformation_id: TransformationId):
try:
simulation_manager.delete_simulation(str(transformation_id))
return {
"status": f"Simulation '{transformation_id}' deleted successfully!"
}
except KeyError as ke:
raise HTTPException(
status_code=404, detail="simulation not found"
) from ke
except RuntimeError as re:
raise HTTPException(
status_code=400, detail="Runtime error while deleting simulation"
) from re
except Exception as e:
msg = (
"Unexpected error while deleting simulation "
f"{transformation_id}. Error message: {e}"
)
# logging.error(msg)
raise HTTPException(status_code=400, detail=msg)
@app.get(
"/results",
summary="Get a simulation's result",
operation_id="getDataset",
)
def get_results(
collection_name: object_storage.CollectionName,
dataset_name: object_storage.DatasetName,
):
return FileResponse(
simulation_manager.get_simulation_output_path(str(dataset_name))
)