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Backup and restore NULL values in tables #89

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merged 1 commit into from
Sep 5, 2024
Merged

Backup and restore NULL values in tables #89

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8 changes: 4 additions & 4 deletions build-resources/geocml-task-scheduler/geocml-task-scheduler/backup_geocml_db.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,8 @@
def backup_geocml_db():
try:
conn = psycopg2.connect(dbname="geocml_db",
user="geocml",
password="geocml",
user="postgres",
password="admin",
host="geocml-postgres",
port=5432)
except psycopg2.OperationalError:
Expand All @@ -25,7 +25,7 @@ def backup_geocml_db():

# Write table schemata to .tabor file
out = subprocess.run(["tabor", "write", "--db", "geocml_db",
"--username", "postgres", "--password", "admin",
"--username", "geocml", "--password", "geocml",
"--host", "geocml-postgres",
"--file", os.path.join(path_to_backup_dir, "geocml_db.tabor")],
capture_output=True)
Expand Down Expand Up @@ -56,7 +56,7 @@ def backup_geocml_db():

data_file_path = os.path.join(path_to_backup_dir, "data:{}.{}.csv".format(schema[0], table[2]))
data_file = open(data_file_path, "w")
cursor.copy_expert(f"""COPY {schema[0]}."{table[2]}" TO STDOUT WITH (FORMAT csv, DELIMITER ',', HEADER);""", data_file)
cursor.copy_expert(f"""COPY {schema[0]}."{table[2]}" TO STDOUT WITH (FORMAT csv, DELIMITER ',', HEADER, NULL 'NULL');""", data_file)
data_file.close()

if delete_backup_dir: # nothing to back up
Expand Down
2 changes: 1 addition & 1 deletion ...d-resources/geocml-task-scheduler/geocml-task-scheduler/restore_geocml_db_from_backups.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@ def restore_geocml_db_from_backups():
file_name_split = file_name_split[1].split(".")
data_file = open(os.path.join(db_backups_dir, most_recent_backup, csv_data_file), "r").readlines()
cursor.copy_from(StringIO("".join(data_file[1::])), f"{file_name_split[1]}", sep=",",
columns=tuple(data_file[0].replace("\n", "").split(",")))
columns=tuple(data_file[0].replace("\n", "").split(",")), null="NULL")
log("Finished loading data!")

conn.commit()
Expand Down
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