#3 Team onebillion: Extract serial numbers of tablets uploading data

- Generate CSV file for the entire field test period.

team-ONEBILLION/tablets-uploading-data/extract_tablet_serial_numbers.py

@@ -24,9 +24,47 @@ def verify_date(date_text):
         raise ValueError("Incorrect date format. Should be YYYY-mm-dd")
 
 
+# Prepares a set of key:value pairs for the MAC addresses listed in tablet-mac-to-serial-mappings.csv. This will make it
+# possible to map a MAC address (used in filenames before March 2018) to its corresponding tablet serial number.
+tablet_mac_to_serial_mappings = {}
+def initialize_tablet_mac_to_serial_mappings():
+    print(os.path.basename(__file__), "initialize_tablet_mac_to_serial_mappings")
+
+    if len(tablet_mac_to_serial_mappings) > 0:
+        # The key set has already been initialized
+        return tablet_mac_to_serial_mappings
+
+    with open("../tablet-tracker/tablet-mac-to-serial-mappings.csv") as csv_file:
+        csv_data = csv.reader(csv_file)
+        csv_data_row_count = 0
+        for csv_data_row in csv_data:
+            csv_data_row_count += 1
+            if csv_data_row_count == 1:
+                # Skip header row
+                continue
+            print(os.path.basename(__file__), "csv_data_row: {}".format(csv_data_row))
+
+            mac_address = csv_data_row[0]
+            serial_number = csv_data_row[1]
+
+            try:
+                existing_key = tablet_mac_to_serial_mappings[mac_address]
+                # The MAC address has already been added as a key.
+                raise ValueError("MAC address has already been added: \"{}\". Skipping.".format(mac_address))
+            except KeyError:
+                # The MAC address has not yet been added as a key. Add it.
+                print(os.path.basename(__file__), "Adding MAC address: \"{}\"".format(mac_address))
+                tablet_mac_to_serial_mappings[mac_address] = serial_number
+
+    print(os.path.basename(__file__), "tablet_mac_to_serial_mappings: {}".format(tablet_mac_to_serial_mappings))
+    return tablet_mac_to_serial_mappings
+
+
 def extract_from_week(directory_containing_weekly_data):
     print(os.path.basename(__file__), "extract_from_week")
 
+    initialize_tablet_mac_to_serial_mappings()
+
     # Extract the date (the last 10 characters) from the directory path
     date = directory_containing_weekly_data[len(directory_containing_weekly_data) - 10:len(directory_containing_weekly_data)]
     print(os.path.basename(__file__), "date: \"{}\"".format(date))
@@ -64,22 +102,57 @@ def extract_from_week(directory_containing_weekly_data):
             for file_path in glob.iglob(village_id_dir_entry.path + "/**/*", recursive=True):
                 print(os.path.basename(__file__), "file_path: {}".format(file_path))
 
-                # Expect the following directory structure: "2019-03-01/96/REMOTE/5B12002485_2019_02_23_12_20_22.db"
+                # Expect the following directory structure:
+                #  - "2017-12-29/105/REMOTE/80a589fd41_2017_12_24_12_23_29.db" (MAC address, 10 characters)
+                #  - "2018-03-09/86/REMOTE/80a5896b547_2018_02_28_10_25_09.db" (MAC address, 11 characters)
+                #  - "2018-03-09/99/REMOTE/80a589ae9551_2018_03_05_09_46_10.db" (MAC address, 12 characters)
+                #  - "2018-03-23/86/REMOTE/5A29000653_2018_03_19_07_12_18.db" (serial number)
+                #  - "2019-03-01/96/REMOTE/5B12002485_2019_02_23_12_20_22.db" (serial number)
 
                 # Skip if the current item is a directory
                 if os.path.isdir(file_path):
                     # warnings.warn("os.path.isdir(file_path): {}".format(file_path))
                     continue
 
-                # Get the filename, e.g. "5B12002485_2019_02_23_12_20_22.db"
+                # Get the filename, e.g. "80a5895313a5_2018_02_19_06_48_38.db.db" or "5A29000653_2018_03_19_07_12_18.db"
                 basename = ntpath.basename(file_path)
+                print(os.path.basename(__file__), "\n")
                 print(os.path.basename(__file__), "basename: \"{}\"".format(basename))
 
                 # Extract the tablet serial number from the filename
-                tablet_serial = basename[0:10]
+                tablet_serial = None
+
+                # Up until April 2018, filenames were generated using tablet MAC addresses instead of tablet serial numbers.
+                #  - Example MAC address:   "80a5895313a5_2018_02_19_06_48_38.db" --> "80a5895313a5"
+                #  - Example serial number: "5A29000653_2018_03_19_07_12_18.db" --> "5A29000653"
+                mac_address_or_serial_number = basename[0:len(basename) - 23]
+                if not serial_number_util.is_valid(mac_address_or_serial_number):
+                    # MAC address in filename
+
+                    # Extract the MAC address from the filename (e.g. "80a5895313a5_2018_02_19_06_48_38.db" --> "80a5895313a5").
+                    # Note that some of the filenames contained MAC addresses consisting of only 11 or 10 characters (e.g.
+                    # "80a5896b547_2018_02_28_10_25_09.db" or "80a589fd41_2017_12_24_12_23_29.db"), so don't assume a
+                    # length of 12 characters!
+                    mac_address = basename[0:len(basename) - 23]
+                    print(os.path.basename(__file__), "mac_address: \"{}\"".format(mac_address))
+
+                    # Get the corresponding serial number
+                    try:
+                        tablet_serial = tablet_mac_to_serial_mappings[mac_address]
+                        print(os.path.basename(__file__), "tablet_serial looked up from tablet_mac_to_serial_mappings: \"{}\"".format(tablet_serial))
+                    except KeyError:
+                        # No match. Skip to the next file.
+                        continue
+                else:
+                    # Serial number in filename
+
+                    # Extract the tablet serial number from the filename (e.g. "5A29000653_2018_03_19_07_12_18.db")
+                    tablet_serial = basename[0:10]
+                    print(os.path.basename(__file__), "tablet_serial: \"{}\"".format(tablet_serial))
+
                 print(os.path.basename(__file__), "tablet_serial: \"{}\"".format(tablet_serial))
 
-                # Skip if the current filename does not contain a valid tablet serial number (on the format "5B12002485_2019_02_23_12_20_22.db")
+                # Skip if the tablet_serial is not on a valid format
                 is_valid_tablet_serial_number = serial_number_util.is_valid(tablet_serial)
                 print(os.path.basename(__file__), "is_valid_tablet_serial_number: {}".format(is_valid_tablet_serial_number))
                 if not is_valid_tablet_serial_number:

team-ONEBILLION/tablets-uploading-data/extract_tablet_serial_numbers_from_multiple_weeks.py

@@ -1,6 +1,7 @@
 # Collects tablet serials numbers from multiple weeks of data and combines them into one file.
 #
 # Example usage:
+#     cd tablets-uploading-data
 #     python3 extract_tablet_serial_numbers_from_multiple_weeks.py ../tablet-usage-data
 #
 # The extracted data will be stored in a file named `tablets-uploading-data-ONEBILLION.csv`.