Enhance synthetic data generation and fix schema inconsistencies#131
Enhance synthetic data generation and fix schema inconsistencies#131Prasadkurapati wants to merge 6 commits intomainfrom
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…o 10k rows - Fix state codes: strings (US-NY, CA-ON) instead of integers - Add proper country-state mapping (no more Afghanistan with NY) - Replace random words with realistic request templates - Generate fresh data instead of editing existing CSVs - Valid foreign keys using UUID pools
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Pull request overview
Updates the repository’s synthetic/mock data story by rewriting the Python generator and committing new CSV seed data intended to be more realistic and consistent with foreign keys and geography.
Changes:
- Rewrites
generate_mock_data.pyto generate larger datasets with “realistic” request text and UUID-based IDs. - Adds/updates committed
database/mock_db/*.csvseed files. - Adds a
fix_foreign_keys.pyutility and updatesdatabase/README.MDrun instructions.
Reviewed changes
Copilot reviewed 7 out of 8 changed files in this pull request and generated 26 comments.
Show a summary per file
| File | Description |
|---|---|
database/mock-data-generation/generate_mock_data.py |
New end-to-end generator producing users/requests/volunteers/assignments/comments. |
database/mock-data-generation/fix_foreign_keys.py |
Utility script intended to rewrite FK columns post-generation. |
database/mock_db/users.csv |
New/updated committed mock users dataset. |
database/mock_db/request.csv |
New/updated committed mock requests dataset. |
database/mock_db/request_comments.csv |
New/updated committed mock request comments dataset. |
database/mock_db/volunteer_details.csv |
New/updated committed mock volunteer details dataset. |
database/README.MD |
Adds basic instructions for running the generator. |
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| # CONFIG | ||
| NUM_ROWS = 10000 | ||
| OUTPUT_DIR = "../mock_db" |
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Other generators in database/mock-data-generation/ use shared helpers like utils.set_seed()/format_ts()/write_csv() (e.g., volunteer_applications.py:5-13) to keep output deterministic and consistently formatted. This script doesn’t seed random/Faker and bypasses those utilities, so outputs and formatting will vary run-to-run; consider reintroducing seeding (and/or reusing utils) if reproducibility is required.
| REQUEST_TYPES = { | ||
| 1: "One-time", | ||
| 2: "Recurring", | ||
| 3: "Emergency" | ||
| } | ||
|
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REQUEST_TYPES is hard-coded as 1-3 with labels that may not match the repo’s lookup table (database/lookup_tables/request_type.csv). To keep generated data loadable, consider reading valid req_type_id values from the lookup CSV instead of defining a separate enum here.
| REQUEST_TYPES = { | |
| 1: "One-time", | |
| 2: "Recurring", | |
| 3: "Emergency" | |
| } | |
| def load_request_types(): | |
| """ | |
| Load request types from the lookup CSV to keep mock data aligned with the database. | |
| Falls back to the previous hard-coded mapping if the CSV is missing or malformed. | |
| """ | |
| csv_path = os.path.join(os.path.dirname(__file__), "..", "lookup_tables", "request_type.csv") | |
| try: | |
| df = pd.read_csv(csv_path) | |
| # Expect at least two columns: id and label. Use the first two columns generically. | |
| if df.empty or df.shape[1] < 2: | |
| raise ValueError("request_type.csv does not have the expected structure") | |
| id_col = df.columns[0] | |
| label_col = df.columns[1] | |
| return dict(zip(df[id_col].astype(int), df[label_col].astype(str))) | |
| except Exception: | |
| # Fallback to the original hard-coded mapping to avoid breaking existing behavior. | |
| return { | |
| 1: "One-time", | |
| 2: "Recurring", | |
| 3: "Emergency", | |
| } | |
| REQUEST_TYPES = load_request_types() |
| 2. Run script: | ||
| python generate_mock_data.py | ||
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| Output: | ||
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| - users.csv | ||
| - request.csv |
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The run command python generate_mock_data.py is ambiguous because the script lives under database/mock-data-generation/. Please clarify the correct invocation (e.g., run from repo root with the proper path) and optionally note that the output directory is database/mock_db/.
| 2. Run script: | |
| python generate_mock_data.py | |
| Output: | |
| - users.csv | |
| - request.csv | |
| 2. Run script from the repo root: | |
| python database/mock-data-generation/generate_mock_data.py | |
| Output (written to database/mock_db/): | |
| - database/mock_db/users.csv | |
| - database/mock_db/request.csv |
| 1,17,Level alone lot respond what answer.,Continue garden decade strong soon. See new affect interview.,1,2,2 | ||
| 2,81,Personal fill poor from be.,Politics grow continue sister. True place no performance group call military.,1,3,3 |
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PR description mentions contextual request subjects/descriptions by category, but the committed req_title/req_description values here still look like generic Faker text (and req_cat_id is numeric). If these CSVs are intended as the new generated output, please regenerate them using the new templates/categories so the sample data matches the PR’s stated goal.
| comments_df['req_id'] = comments_df['req_id'].apply(lambda x: random.choice(request_df['req_id'])) | ||
| comments_df['commenter_id'] = comments_df['commenter_id'].apply(lambda x: random.choice(users_df['user_id'])) |
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This script updates comments_df['req_id'] and comments_df['commenter_id'], but the committed database/mock_db/request_comments.csv header is comment_id,request_id,user_id,comment (no req_id/commenter_id). This will also raise KeyError unless the CSV schema is updated to match.
| comments_df['req_id'] = comments_df['req_id'].apply(lambda x: random.choice(request_df['req_id'])) | |
| comments_df['commenter_id'] = comments_df['commenter_id'].apply(lambda x: random.choice(users_df['user_id'])) | |
| comments_df['request_id'] = comments_df['request_id'].apply(lambda x: random.choice(request_df['req_id'])) | |
| comments_df['user_id'] = comments_df['user_id'].apply(lambda x: random.choice(users_df['user_id'])) |
| # Consistent country-state relationship | ||
| country_id = random.choice(list(COUNTRIES.keys())) | ||
| state_id = get_state_for_country(country_id) | ||
| state_info = STATES.get(state_id, {}) |
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state_info = STATES.get(state_id, {}) is assigned but never used. Either use it (e.g., to derive state_code/state_name columns) or remove the variable to reduce clutter.
| state_info = STATES.get(state_id, {}) |
| @@ -0,0 +1,101 @@ | |||
| comment_id,request_id,user_id,comment | |||
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This request_comments.csv uses columns request_id,user_id,comment and numeric IDs, but the generator writes req_id,commenter_id,comment_desc,... with UUID IDs. As-is, the committed CSVs can’t be produced by (or consumed consistently with) the new generator; please make the column names/ID types consistent across the generator and these seed files.
| comment_id,request_id,user_id,comment | |
| comment_id,req_id,commenter_id,comment_desc |
| request_id,req_user_id,req_title,req_description,req_cat_id,req_priority_id,req_status_id | ||
| 1,17,Level alone lot respond what answer.,Continue garden decade strong soon. See new affect interview.,1,2,2 | ||
| 2,81,Personal fill poor from be.,Politics grow continue sister. True place no performance group call military.,1,3,3 | ||
| 3,98,Him data market.,Produce join contain as. Civil meet off movement power. Various nice choose determine concern most.,5,1,2 | ||
| 4,8,Especially stuff call along term.,Reduce onto source community. Against act mention song.,4,2,2 | ||
| 5,80,Relate impact card news.,I town increase rise arrive. Tax relationship again make thus.,3,3,1 | ||
| 6,83,Specific as leave something.,Throw need old later center hand. Fill administration decade build.,2,3,2 | ||
| 7,98,Blue community then simple.,Stop simple shake organization summer throw. Reflect program open final under loss.,3,3,1 | ||
| 8,84,Everything be similar least century.,Develop sometimes collection term true left than. Best rise recognize quite stay develop.,1,3,1 | ||
| 9,93,Rise hope baby.,Word big whole phone impact teacher. According open city sit within likely.,1,3,1 | ||
| 10,4,School person note thing system candidate word.,Yeah upon life generation international about. Media film season week budget off seat.,1,3,2 | ||
| 11,82,Couple growth vote.,Fine weight peace end just. Player well third door red media.,5,1,2 | ||
| 12,91,Be read only.,Letter care push assume simple. Fly evening herself stage if.,1,2,2 | ||
| 13,80,North result worry affect police a.,Without grow upon exist picture reality. Through democratic well growth. Value part near ready all.,3,3,2 | ||
| 14,42,Factor last perhaps hot.,If quickly agree edge. Until some manage none year administration many.,2,1,2 | ||
| 15,41,First dog suddenly business.,Then finish specific probably. Partner have its month.,1,3,2 | ||
| 16,82,Television true respond ever.,Kitchen word mind compare avoid performance by. Rest reason kid.,1,2,2 | ||
| 17,32,Prove arrive with.,Word campaign person from leg growth. After executive each me top.,5,1,3 | ||
| 18,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. | ||
| Buy great despite price month base miss.",5,2,3 | ||
| 19,77,Major fall although television some.,Share forward realize design chance accept these. Room me add debate many.,2,1,2 | ||
| 20,35,Kind stock then know weight.,Above age would cultural economic your rise production.,1,2,2 | ||
| 21,86,Service without professor talk deep.,Fight here real various. Child heart simple network different.,5,3,3 | ||
| 22,20,Sing manage purpose eye.,"Approach wait ball fire. Board note season test step. | ||
| Play beautiful realize figure old.",3,3,1 | ||
| 23,45,Day finish hour memory.,Bring simply fine go first red activity.,3,1,3 | ||
| 24,50,Dog ask go board.,Mention manager than fall. Provide this adult term. Rich site few have minute pass.,3,1,3 |
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request.csv here uses request_id,req_title,req_description,... with numeric IDs and category/priority/status as integers, which doesn’t match the generator output (req_id UUIDs plus different column names like req_subj/req_desc, and req_cat_id as strings such as ELDERLY_CARE). Please align the committed seed CSV schema with the generator (or vice versa) so foreign keys and imports remain consistent.
| request_id,req_user_id,req_title,req_description,req_cat_id,req_priority_id,req_status_id | |
| 1,17,Level alone lot respond what answer.,Continue garden decade strong soon. See new affect interview.,1,2,2 | |
| 2,81,Personal fill poor from be.,Politics grow continue sister. True place no performance group call military.,1,3,3 | |
| 3,98,Him data market.,Produce join contain as. Civil meet off movement power. Various nice choose determine concern most.,5,1,2 | |
| 4,8,Especially stuff call along term.,Reduce onto source community. Against act mention song.,4,2,2 | |
| 5,80,Relate impact card news.,I town increase rise arrive. Tax relationship again make thus.,3,3,1 | |
| 6,83,Specific as leave something.,Throw need old later center hand. Fill administration decade build.,2,3,2 | |
| 7,98,Blue community then simple.,Stop simple shake organization summer throw. Reflect program open final under loss.,3,3,1 | |
| 8,84,Everything be similar least century.,Develop sometimes collection term true left than. Best rise recognize quite stay develop.,1,3,1 | |
| 9,93,Rise hope baby.,Word big whole phone impact teacher. According open city sit within likely.,1,3,1 | |
| 10,4,School person note thing system candidate word.,Yeah upon life generation international about. Media film season week budget off seat.,1,3,2 | |
| 11,82,Couple growth vote.,Fine weight peace end just. Player well third door red media.,5,1,2 | |
| 12,91,Be read only.,Letter care push assume simple. Fly evening herself stage if.,1,2,2 | |
| 13,80,North result worry affect police a.,Without grow upon exist picture reality. Through democratic well growth. Value part near ready all.,3,3,2 | |
| 14,42,Factor last perhaps hot.,If quickly agree edge. Until some manage none year administration many.,2,1,2 | |
| 15,41,First dog suddenly business.,Then finish specific probably. Partner have its month.,1,3,2 | |
| 16,82,Television true respond ever.,Kitchen word mind compare avoid performance by. Rest reason kid.,1,2,2 | |
| 17,32,Prove arrive with.,Word campaign person from leg growth. After executive each me top.,5,1,3 | |
| 18,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. | |
| Buy great despite price month base miss.",5,2,3 | |
| 19,77,Major fall although television some.,Share forward realize design chance accept these. Room me add debate many.,2,1,2 | |
| 20,35,Kind stock then know weight.,Above age would cultural economic your rise production.,1,2,2 | |
| 21,86,Service without professor talk deep.,Fight here real various. Child heart simple network different.,5,3,3 | |
| 22,20,Sing manage purpose eye.,"Approach wait ball fire. Board note season test step. | |
| Play beautiful realize figure old.",3,3,1 | |
| 23,45,Day finish hour memory.,Bring simply fine go first red activity.,3,1,3 | |
| 24,50,Dog ask go board.,Mention manager than fall. Provide this adult term. Rich site few have minute pass.,3,1,3 | |
| req_id,req_user_id,req_subj,req_desc,req_cat_id,req_priority_id,req_status_id | |
| 00000000-0000-0000-0000-000000000001,17,Level alone lot respond what answer.,Continue garden decade strong soon. See new affect interview.,ELDERLY_CARE,2,2 | |
| 00000000-0000-0000-0000-000000000002,81,Personal fill poor from be.,Politics grow continue sister. True place no performance group call military.,ELDERLY_CARE,3,3 | |
| 00000000-0000-0000-0000-000000000003,98,Him data market.,Produce join contain as. Civil meet off movement power. Various nice choose determine concern most.,OTHER,1,2 | |
| 00000000-0000-0000-0000-000000000004,8,Especially stuff call along term.,Reduce onto source community. Against act mention song.,PET_CARE,2,2 | |
| 00000000-0000-0000-0000-000000000005,80,Relate impact card news.,I town increase rise arrive. Tax relationship again make thus.,HOUSEKEEPING,3,1 | |
| 00000000-0000-0000-0000-000000000006,83,Specific as leave something.,Throw need old later center hand. Fill administration decade build.,CHILDCARE,3,2 | |
| 00000000-0000-0000-0000-000000000007,98,Blue community then simple.,Stop simple shake organization summer throw. Reflect program open final under loss.,HOUSEKEEPING,3,1 | |
| 00000000-0000-0000-0000-000000000008,84,Everything be similar least century.,Develop sometimes collection term true left than. Best rise recognize quite stay develop.,ELDERLY_CARE,3,1 | |
| 00000000-0000-0000-0000-000000000009,93,Rise hope baby.,Word big whole phone impact teacher. According open city sit within likely.,ELDERLY_CARE,3,1 | |
| 00000000-0000-0000-0000-000000000010,4,School person note thing system candidate word.,Yeah upon life generation international about. Media film season week budget off seat.,ELDERLY_CARE,3,2 | |
| 00000000-0000-0000-0000-000000000011,82,Couple growth vote.,Fine weight peace end just. Player well third door red media.,OTHER,1,2 | |
| 00000000-0000-0000-0000-000000000012,91,Be read only.,Letter care push assume simple. Fly evening herself stage if.,ELDERLY_CARE,2,2 | |
| 00000000-0000-0000-0000-000000000013,80,North result worry affect police a.,Without grow upon exist picture reality. Through democratic well growth. Value part near ready all.,HOUSEKEEPING,3,2 | |
| 00000000-0000-0000-0000-000000000014,42,Factor last perhaps hot.,If quickly agree edge. Until some manage none year administration many.,CHILDCARE,1,2 | |
| 00000000-0000-0000-0000-000000000015,41,First dog suddenly business.,Then finish specific probably. Partner have its month.,ELDERLY_CARE,3,2 | |
| 00000000-0000-0000-0000-000000000016,82,Television true respond ever.,Kitchen word mind compare avoid performance by. Rest reason kid.,ELDERLY_CARE,2,2 | |
| 00000000-0000-0000-0000-000000000017,32,Prove arrive with.,Word campaign person from leg growth. After executive each me top.,OTHER,1,3 | |
| 00000000-0000-0000-0000-000000000018,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. | |
| Buy great despite price month base miss.",OTHER,2,3 | |
| 00000000-0000-0000-0000-000000000019,77,Major fall although television some.,Share forward realize design chance accept these. Room me add debate many.,CHILDCARE,1,2 | |
| 00000000-0000-0000-0000-000000000020,35,Kind stock then know weight.,Above age would cultural economic your rise production.,ELDERLY_CARE,2,2 | |
| 00000000-0000-0000-0000-000000000021,86,Service without professor talk deep.,Fight here real various. Child heart simple network different.,OTHER,3,3 | |
| 00000000-0000-0000-0000-000000000022,20,Sing manage purpose eye.,"Approach wait ball fire. Board note season test step. | |
| Play beautiful realize figure old.",HOUSEKEEPING,3,1 | |
| 00000000-0000-0000-0000-000000000023,45,Day finish hour memory.,Bring simply fine go first red activity.,HOUSEKEEPING,1,3 | |
| 00000000-0000-0000-0000-000000000024,50,Dog ask go board.,Mention manager than fall. Provide this adult term. Rich site few have minute pass.,HOUSEKEEPING,1,3 |
| OUTPUT_DIR = "output_csv_files" | ||
| # CONFIG | ||
| NUM_ROWS = 10000 | ||
| OUTPUT_DIR = "../mock_db" |
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OUTPUT_DIR = "../mock_db" is relative to the current working directory, not the script location, so running the script from a different directory can write files to an unexpected path. Consider resolving the output directory relative to __file__ (e.g., using pathlib.Path(__file__).parent) or accept an explicit CLI arg/env var for the output path.
| OUTPUT_DIR = "../mock_db" | |
| OUTPUT_DIR = os.path.join(os.path.dirname(__file__), "..", "mock_db") |
| 18,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. | ||
| Buy great despite price month base miss.",5,2,3 |
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Row 18’s req_description contains an embedded newline inside a quoted CSV field. While valid CSV, it tends to break simplistic line-based import tooling. If these files are intended for easy loading (e.g., via shell/ETL scripts), consider ensuring generated descriptions don’t include newlines (or confirm all loaders handle RFC4180 multiline fields).
| 18,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. | |
| Buy great despite price month base miss.",5,2,3 | |
| 18,83,Somebody sea idea friend sea serve.,"Pay view whole go. Not a fill everyone. Buy great despite price month base miss.",5,2,3 |
|
Hi @saquibb8 , this PR is ready for your review. I accidentally triggered Copilot AI review, but please ignore those comments - they are automated suggestions. I've addressed your original feedback about country-state consistency and realistic request content. Thanks!" |
Summary
Fixed all data consistency issues raised in code review. The script now generates realistic, scalable mock data with proper foreign key relationships.
Changes Made
1. Country-State Consistency
2. Scalability
NUM_ROWS = 10000and execute3. Realistic Request Content
fake.sentence()produced random gibberish4. Foreign Key Integrity
fix_foreign_keys.pyworkaroundTesting
Files Changed
database/mock-data-generation/generate_mock_data.py(complete rewrite)Removed
database/mock-data-generation/fix_foreign_keys.py(no longer needed)