Backfill/claims_hosp

ansible/templates/claims_hosp-params-prod.json.j2

@@ -1,13 +1,15 @@
 {
   "common": {
-    "export_dir": "./receiving",
+    "export_dir": "./common/covidcast/receiving/claims_hosp",
     "log_exceptions": false
   },
   "indicator": {
     "input_dir": "./retrieve_files",
     "start_date": "2020-02-01",
     "end_date": null,
     "drop_date": null,
+    "backfill_dir": "/common/backfill/claims_hosp",
+    "backfill_merge_day": 0,
     "n_backfill_days": 70,
     "n_waiting_days": 3,
     "write_se": false,

claims_hosp/delphi_claims_hosp/backfill.py

@@ -0,0 +1,112 @@
+"""
+Store backfill data.
+
+Author: Jingjing Tang
+Created: 2022-08-03
+
+"""
+import os
+import glob
+from datetime import datetime
+
+# third party
+import pandas as pd
+
+# first party
+from .config import Config
+
+def store_backfill_file(claims_filepath, _end_date, backfill_dir):
+    """
+    Store county level backfill data into backfill_dir.
+
+    Parameter:
+        claims_filepath: str
+            path to the aggregated claims data
+        _end_date: datetime
+            The most recent date when the raw data is received
+        backfill_dir: str
+            specified path to store backfill files.
+    """
+    backfilldata = pd.read_csv(
+        claims_filepath,
+        usecols=Config.CLAIMS_DTYPES.keys(),
+        dtype=Config.CLAIMS_DTYPES,
+        parse_dates=[Config.CLAIMS_DATE_COL],
+    )
+
+    backfilldata.rename({"ServiceDate": "time_value",
+                         "PatCountyFIPS": "fips",
+                         "Denominator": "den",
+                         "Covid_like": "num"},
+                        axis=1, inplace=True)
+    #Store one year's backfill data
+    _start_date = _end_date.replace(year=_end_date.year-1)
+    selected_columns = ['time_value', 'fips',
+                        'den', 'num']
+    backfilldata = backfilldata.loc[(backfilldata["time_value"] >= _start_date)
+                                    & (~backfilldata["fips"].isnull()),
+                                    selected_columns]
+    path = backfill_dir + \
+        "/claims_hosp_as_of_%s.parquet"%datetime.strftime(_end_date, "%Y%m%d")
+    # Store intermediate file into the backfill folder
+    backfilldata.to_parquet(path)
+
+def merge_backfill_file(backfill_dir, backfill_merge_day, today,
+                        test_mode=False, check_nd=25):
+    """
+    Merge ~4 weeks' backfill data into one file.
+
+    Usually this function should merge 28 days' data into a new file so as to
+    save the reading time when running the backfill pipelines. We set a softer
+    threshold to allow flexibility in data delivery.
+    Parameters
+    ----------
+    today : datetime
+        The most recent date when the raw data is received
+    backfill_dir : str
+        specified path to store backfill files.
+    backfill_merge_day: int
+        The day of a week that we used to merge the backfill files. e.g. 0
+        is Monday.
+    test_mode: bool
+    check_nd: int
+        The criteria of the number of unmerged files. Ideally, we want the
+        number to be 28, but we use a looser criteria from practical
+        considerations
+    """
+    new_files = glob.glob(backfill_dir + "/claims_hosp_as_of_*")
+
+    def get_date(file_link):
+        # Keep the function here consistent with the backfill path in
+        # function `store_backfill_file`
+        fn = file_link.split("/")[-1].split(".parquet")[0].split("_")[-1]
+        return datetime.strptime(fn, "%Y%m%d")
+
+    date_list = list(map(get_date, new_files))
+    earliest_date = min(date_list)
+    latest_date = max(date_list)
+
+    # Check whether to merge
+    # Check the number of files that are not merged
+    if today.weekday() != backfill_merge_day or (today-earliest_date).days <= check_nd:
+        return
+
+    # Start to merge files
+    pdList = []
+    for fn in new_files:
+        df = pd.read_parquet(fn, engine='pyarrow')
+        issue_date = get_date(fn)
+        df["issue_date"] = issue_date
+        df["lag"] = [(issue_date - x).days for x in df["time_value"]]
+        pdList.append(df)
+    merged_file = pd.concat(pdList).sort_values(["time_value", "fips"])
+    path = backfill_dir + "/claims_hosp_from_%s_to_%s.parquet"%(
+        datetime.strftime(earliest_date, "%Y%m%d"),
+        datetime.strftime(latest_date, "%Y%m%d"))
+    merged_file.to_parquet(path)
+
+    # Delete daily files once we have the merged one.
+    if not test_mode:
+        for fn in new_files:
+            os.remove(fn)
+    return

claims_hosp/delphi_claims_hosp/load_data.py

@@ -5,7 +5,6 @@
 Created: 2020-09-27
 
 """
-
 # third party
 import pandas as pd
 
@@ -53,7 +52,6 @@ def load_claims_data(claims_filepath, dropdate, base_geo):
 
     return claims_data
 
-
 def load_data(input_filepath, dropdate, base_geo):
     """
     Load in claims data, and combine them.

claims_hosp/delphi_claims_hosp/run.py

@@ -20,6 +20,7 @@
 from .modify_claims_drops import modify_and_write
 from .get_latest_claims_name import get_latest_filename
 from .update_indicator import ClaimsHospIndicatorUpdater
+from .backfill import (store_backfill_file, merge_backfill_file)
 
 
 def run_module(params):
@@ -89,6 +90,12 @@ def run_module(params):
     if params["indicator"]["start_date"] is not None:
         startdate = params["indicator"]['start_date']
 
+    # Store backfill data
+    backfill_dir = params["indicator"]["backfill_dir"]
+    backfill_merge_day = params["indicator"]["backfill_merge_day"]
+    merge_backfill_file(backfill_dir, backfill_merge_day, datetime.today())
+    store_backfill_file(claims_file, dropdate_dt, backfill_dir)
+
     # print out information
     logger.info("Loaded params",
                 startdate = startdate,

claims_hosp/params.json.template

@@ -9,6 +9,8 @@
     "end_date": null,
     "drop_date": null,
     "n_backfill_days": 70,
+    "backfill_dir": "./backfill",
+    "backfill_merge_day": 0,
     "n_waiting_days": 3,
     "write_se": false,
     "obfuscated_prefix": "foo_obfuscated",

claims_hosp/setup.py

@@ -4,6 +4,7 @@
 required = [
     "numpy",
     "pandas",
+    "pyarrow",
     "paramiko",
     "pydocstyle",
     "pytest",

claims_hosp/tests/test_backfill.py

@@ -0,0 +1,83 @@
+import os
+import glob
+from datetime import datetime
+
+# third party
+import pandas as pd
+import pytest
+
+# first party
+from delphi_claims_hosp.config import Config, GeoConstants
+from delphi_claims_hosp.backfill import store_backfill_file, merge_backfill_file
+
+CONFIG = Config()
+CONSTANTS = GeoConstants()
+PARAMS = {
+    "indicator": {
+        "input_file": "test_data/SYNEDI_AGG_INPATIENT_11062020_1451CDT.csv.gz",
+        "backfill_dir": "./backfill",
+        "drop_date": "2020-06-11",
+    }
+}
+DATA_FILEPATH = PARAMS["indicator"]["input_file"]
+DROP_DATE = pd.to_datetime(PARAMS["indicator"]["drop_date"])
+backfill_dir = PARAMS["indicator"]["backfill_dir"]
+
+class TestBackfill:
+
+    def test_store_backfill_file(self):
+        dropdate = datetime(2020, 1, 1) 
+        fn = "claims_hosp_as_of_20200101.parquet"
+        assert fn not in os.listdir(backfill_dir)
+
+        # Store backfill file
+        store_backfill_file(DATA_FILEPATH, dropdate, backfill_dir)
+        assert fn in os.listdir(backfill_dir)
+        fn = "claims_hosp_as_of_20200101.parquet"
+        backfill_df = pd.read_parquet(backfill_dir + "/"+ fn, engine='pyarrow')
+
+        selected_columns = ['time_value', 'fips',
+                        'num', 'den']
+        assert set(selected_columns) == set(backfill_df.columns)  
+
+        os.remove(backfill_dir + "/" + fn)
+        assert fn not in os.listdir(backfill_dir)
+
+    def test_merge_backfill_file(self):
+
+        today = datetime.today()
+
+        new_files = glob.glob(backfill_dir + "/claims_hosp*.parquet")
+        fn = "claims_hosp_from_20200611_to_20200614.parquet"
+        assert fn not in os.listdir(backfill_dir)
+
+        # Check the when the merged file is not generated
+        today = datetime(2020, 6, 14)
+        merge_backfill_file(backfill_dir, today.weekday(), today, 
+                            test_mode=True, check_nd=8)
+        assert fn not in os.listdir(backfill_dir)
+
+         # Generate the merged file, but not delete it
+        merge_backfill_file(backfill_dir, today.weekday(), today, 
+                            test_mode=True, check_nd=2)         
+        assert fn in os.listdir(backfill_dir)
+
+        # Read daily file
+        pdList = []        
+        for file in new_files:
+            df = pd.read_parquet(file, engine='pyarrow')
+            issue_date = datetime.strptime(file[-16:-8], "%Y%m%d")
+            df["issue_date"] = issue_date
+            df["lag"] = [(issue_date - x).days for x in df["time_value"]]
+            pdList.append(df)
+        expected = pd.concat(pdList).sort_values(["time_value", "fips"])
+
+        # Read the merged file
+        merged = pd.read_parquet(backfill_dir + "/" + fn, engine='pyarrow')
+
+        assert set(expected.columns) == set(merged.columns)
+        assert expected.shape[0] == merged.shape[0]
+        assert expected.shape[1] == merged.shape[1]
+
+        os.remove(backfill_dir + "/" + fn)
+        assert fn not in os.listdir(backfill_dir)