# Appreciation engine reprocessing

## Reprocessing of single business unit(context)

1. Reset records in content_status table and update uows with **dates == today** so Job manager lambda will schedule them as
   new units. Pay attention to meet the requirement **next_run_at > last_updated_at**

```sql
update content_status
set content_status = 'MISSING',
    meta_data      = '{}'
where content_status_id in (123);

update unit_of_work
set created_at          = '2021-11-08 08:00:00.000000',
    last_updated_at     = '2021-11-08 08:00:00.000000',
    next_run_at         = '2021-11-08 08:01:00.000000',
    is_force_complete   = false,
    priority            = 4,
    completeness_status = 'ACTIVE'
where unit_of_work_id in (12334);
```

2. If reprocessing is done on right env(meaning you need data on prod and doing backfill on prod), you don't need to do
   anything else. After download will be finished, message will be send to sqs exp queue and data will be transferred to
   exploration.


2. In case data is required on prod but backfilled on another env(on stage):
   Wait until downloading of files is finished and copy files to destination env using copy
   flow https://github.com/filtr/delphi-util/tree/develop/bulk_copier/bulk_copy_lambda#mode-3-get-prefixes-and-start-step-functions
   . Payload to lambda should be similar to:
   ```json
    {
       "bucket_source": "stage-sme-data-decompressed",
       "key_regexp": ".+US_Columbia_.+",
       "bucket_destination": "sme-data-decompressed",
       "dsp_settings_path": "s3://prod-delphi-configs/dsp-specific-settings.json",
       "debug": true,
       "prefixes": [
         "appreciationengine/activityfeed/v1/report_date=2021-10-24/report_licensor=sme/",
         "appreciationengine/activityfeed/v1/report_date=2021-10-25/report_licensor=sme/",
         "appreciationengine/activityfeed/v1/report_date=2021-10-26/report_licensor=sme/",
         "appreciationengine/activityfeed/v1/report_date=2021-10-27/report_licensor=sme/"
       ]
    }
    ```
3. wait until copy flow copy all required files.(observe process here: 
   https://console.aws.amazon.com/states/home?region=us-east-1#/statemachines/view/arn:aws:states:us-east-1:475275892927:stateMachine:prod-delphi-slzCopyFlow)
    
4. Reprocess context with exploration using slz admin panel:

   4.1. Go to https://admin.delphiplatform.io/
   4.2. Filter content statuses you need to reprocess
   ![img 1](images/ae_repr_cs_step1.png)
   4.3 Select filtered content statuses, and reprocess them for exploration
   ![img 2](images/ae_repr_cs_step2.png)
   4.3 After some time check snowflake side(~30min) to ensure that data is transferred.
   to check snowflake you can either query necessary table using disassemble_content_status_id value
   or find it in SYS.INBOUND_FILE_STATUS by dsp, report_name, licensor, report_date, context, status
   for example:
   ```sql
   select *
   from SYS.INBOUND_FILE_STATUS
   where DSP = 'APPRECIATIONENGINE'
     and REPORT_NAME = 'ACTIVITYFEED'
     and LICENSOR = 'sme'
     and REPORT_DATE = '2021-11-01'
     and CONTEXT = 'US_Columbia'
     and STATUS = 'LOADED';
   ```
   
   check if CREATED_AT field has modern value; INGESTION_COMPLETED = 1 means files ingested in RAW
   to check data in RAW\MAIN you can query appropriate tables using found disassemble_content_status_id
   if report data processed via insert or primary key includes REPORT_DATE, it is possible to check
   RAW\MAIN row count by found disassemble_content_status_id and compare with TOTAL_FILE_ROW_COUNT
   field from SYS.INBOUND_FILE_STATUS. Dimensions very likely won't have same row count in MAIN.
   
   Another way to check if RAW to MAIN processing completed - check appropriate stream on RAW table:
   "select * from RAW.CDC_AE_SEGMENT;" for example.
   INGESTION_COMPLETED = 1 and empty stream means that merging task already executed and all stream
   data processed.
   
   If snowflake jobs are sleeping due to schedule, you need to manually 
   wake them up first. To do this you have to run "call SYS.TASKS_RESUME_SP();"
   use EXPLORATION_SYS_ENV_HL_WH warehouse. Without environment awake, only RAW table will have data,
   INGESTION_COMPLETED value will be 0 for lot of reports. Still some reports don't require running
   environment, so data will be available after task execution in MAIN table as well.

## Reprocessing of Unit of work(all business units)
Reprocessing bunch of completed UoWs should be done using 
https://github.com/filtr/delphi-util/tree/develop/scripts/ae_reprocess script