chore: add CSV-to-DB importer script

[marcospb19-cw]

No description provided.

[github-actions]

PR Review

⏱️ Estimated effort to review [1-5]	3, because the script involves multiple operations including file handling, database operations, and conditional logic which requires careful review to ensure correctness and efficiency.
🧪 Relevant tests	No
🔍 Possible issues	Possible Bug: The script does not handle potential failures in database operations. If a database operation fails, the script will continue executing without any retries or error handling.
	Performance Issue: The script lists all CSV files in the directory and then filters them in a loop, which might be inefficient for directories with a large number of files.
🔒 Security concerns	Sensitive information exposure: The script includes a hardcoded database URL in the example usage comments, which might lead to accidental exposure of credentials if used in real environments.

Code feedback:

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relevant file	utils/import-csv-to-db.sh
suggestion	Consider adding error handling for database import operations to manage failures gracefully. This could include retry mechanisms or logging errors to a specific file. [important]
relevant line	time psql "$DATABASE_URL" -c "\copy $table FROM '$file' DELIMITER E'\t' CSV HEADER"

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relevant file	utils/import-csv-to-db.sh
suggestion	To improve performance, consider using find with -exec instead of ls and a loop. This method can directly handle files within the specified range, reducing unnecessary iterations. [important]
relevant line	files=$(ls -w 1 -v $DATA_FOLDER/*.csv)

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relevant file	utils/import-csv-to-db.sh
suggestion	Remove or mask the database URL in the example usage comments to prevent potential sensitive information exposure. Use placeholder values like <database_url>. [important]
relevant line	# bash csv-to-db-importer.sh ../data 0 36000000 postgres://postgres:postgres@localhost/stratus

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relevant file	utils/import-csv-to-db.sh
suggestion	Add a final check after the import loop to verify if any files were processed and handle the case where no files meet the criteria. This could prevent confusion when no files are imported due to range mismatches. [medium]
relevant line	echo "Imported $import_count files, check the file 'imported.logs'"

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[github-actions]

PR Code Suggestions

Category	Suggestions
Enhancement	Improve the reliability and predictability of file listing. Replace the use of ls for file listing with a more robust method such as find. The ls command can behave unpredictably with special characters or large numbers of files, and its output is not guaranteed to be in a consistent order, even with -v flag. utils/import-csv-to-db.sh [37] -files=$(ls -w 1 -v $DATA_FOLDER/*.csv) +files=$(find $DATA_FOLDER -name '*.csv' -print | sort -V)
	Add error handling for database import operations. Add error handling for the psql command to ensure that the script stops or handles errors when a database import fails. utils/import-csv-to-db.sh [47] -time psql "$DATABASE_URL" -c "\copy $table FROM '$file' DELIMITER E'\t' CSV HEADER" +if ! time psql "$DATABASE_URL" -c "\copy $table FROM '$file' DELIMITER E'\t' CSV HEADER"; then + echo "Failed to import $file" >&2 + exit 1 +fi
	Improve file writing robustness and error handling. Replace the use of echo for appending to files with tee -a for better handling of permissions and errors. utils/import-csv-to-db.sh [49] -echo "$file" >> imported.logs +echo "$file" | tee -a imported.logs >/dev/null
	Enhance the robustness of table name extraction from filenames. Consider using a more robust method for extracting the table name from the filename to handle potential variations or complex patterns. utils/import-csv-to-db.sh [44] -table=$(echo "$file" | grep -oP "(?<=/)\w+(?=-)") +table=$(basename "$file" | grep -oP "^\w+")
Best practice	Prevent word splitting and globbing issues by quoting variable expansions. Use double quotes around variable expansions to prevent word splitting and globbing issues, which can lead to unexpected behavior or security vulnerabilities. utils/import-csv-to-db.sh [37] -files=$(ls -w 1 -v $DATA_FOLDER/*.csv) +files=$(ls -w 1 -v "$DATA_FOLDER"/*.csv)

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