/health-check-regressions

Name

teams:health-check-regressions

Synopsis

/teams:health-check-regressions <release> [--components comp1 comp2 ...] [--start YYYY-MM-DD] [--end YYYY-MM-DD]
/teams:health-check-regressions <release> --team <team-name> [--start YYYY-MM-DD] [--end YYYY-MM-DD]

Description

The teams:health-check-regressions command queries regression data for a specified OpenShift release and generates summary statistics. It leverages the list-regressions command to fetch raw regression data and then presents counts, percentages, and timing metrics to help understand regression trends at a glance.

By default, the command analyzes:

• All regressions within the release development window
• Both open and closed regressions
• Triage coverage and timing metrics
• Per-component breakdowns

This command is useful for:

• Getting a quick count of regressions in a release
• Analyzing regression distribution by component or team
• Tracking triage coverage and response times
• Generating summary reports for regression management
• Monitoring regression resolution speed by component or team
• Comparing regression metrics across different components
• Understanding open vs closed regression breakdown
• Getting team-level regression summaries across all team components

Implementation

1. Verify Prerequisites: Check that Python 3 is installed

   • Run: python3 --version
   • Verify version 3.6 or later is available

2. Parse Arguments: Extract release version and optional filters from arguments

   • Release format: "X.Y" (e.g., "4.17", "4.21")
   • Optional filters:
     • --components: Space-separated list of component search strings (fuzzy match)
     • --team: Team name (looks up all components for that team)
     • --start: Start date for filtering (YYYY-MM-DD)
     • --end: End date for filtering (YYYY-MM-DD)
   • Note: --components and --team are mutually exclusive

3. Resolve Component Names: Use fuzzy matching to find actual component names, or look up by team

   • If --team was provided:
     • Look up all components for that team from team_component_map.json
     • The script will handle this internally via get_team_components()
     • If team not found, display available teams and exit
   • If --components was provided:
     • Run list_components.py to get all available components:

       python3 plugins/teams/skills/list-components/list_components.py
       

     • For each search string, find all components containing that string (case-insensitive)
     • Combine all matches into a single list
     • Remove duplicates
     • If no matches found for a search string, warn the user and show available components
   • If neither --team nor --components was provided:
     • Use all available components from the list

4. Fetch Release Dates: Run the get_release_dates.py script to get development window dates

   • Script location: plugins/teams/skills/get-release-dates/get_release_dates.py
   • Pass release as --release argument
   • Extract development_start and ga dates from JSON output
   • Convert timestamps to simple date format (YYYY-MM-DD)
   • Use these dates if --start and --end are not explicitly provided

5. Execute Python Script: Run the list_regressions.py script with appropriate arguments

   • Script location: plugins/teams/skills/list-regressions/list_regressions.py
   • Pass release as --release argument
   • Pass resolved component names as --components argument
   • Pass development_start date as --start argument (if available)
     • Always applied (for both GA'd and in-development releases)
     • Excludes regressions closed before development started
   • Pass ga date as --end argument (only if GA date is not null)
     • Only applied for GA'd releases
     • Excludes regressions opened after GA
     • For in-development releases (null GA date), no end date filtering is applied
   • Always pass --short flag to exclude regression arrays (only summaries)

6. Parse Output: Process the JSON output from the script

   • Script writes JSON to stdout with summary structure:
     • summary: Overall statistics (total, triaged, percentages, timing)
     • components: Per-component summary statistics
   • ALWAYS use the summary fields for counts and metrics
   • Regression arrays are not included (due to --short flag)

7. Present Results: Display summary in a clear, readable format

   • Show which components were matched (if fuzzy search was used)
   • Show overall summary statistics
   • For --team mode: Focus presentation on the overall team summary, though per-component data is included in JSON
   • For --components mode: Display per-component breakdowns
   • Highlight key metrics:
     • Triage coverage percentages
     • Average time to triage
     • Average time to close (for closed regressions)
     • Open vs closed counts
   • Present data in tables or structured format
   • Note any date filtering applied

8. Error Handling: Handle common error scenarios

   • Network connectivity issues
   • Invalid release format
   • API errors (404, 500, etc.)
   • Empty results
   • No matches for component filter
   • Release dates not found

Return Value

The command outputs a Regression Summary Report with the following information:

Overall Summary

• Release: OpenShift release version
• Development Window: Start and end dates (or "In Development" if no GA date)
• Total Regressions: summary.total
• Filtered Infrastructure Regressions: summary.filtered_suspected_infra_regressions
• Triaged: summary.triaged regressions (summary.triage_percentage%)
• Open: summary.open.total regressions (summary.open.triage_percentage% triaged)
• Closed: summary.closed.total regressions (summary.closed.triage_percentage% triaged)

Timing Metrics

Overall Metrics:

• Average Time to Triage: summary.time_to_triage_hrs_avg hours
• Maximum Time to Triage: summary.time_to_triage_hrs_max hours
• Average Time to Close: summary.time_to_close_hrs_avg hours (closed regressions only)
• Maximum Time to Close: summary.time_to_close_hrs_max hours (closed regressions only)

Open Regression Metrics:

• Average Open Duration: summary.open.open_hrs_avg hours
• Maximum Open Duration: summary.open.open_hrs_max hours
• Average Time to Triage (open): summary.open.time_to_triage_hrs_avg hours
• Maximum Time to Triage (open): summary.open.time_to_triage_hrs_max hours

Closed Regression Metrics:

• Average Time to Close: summary.closed.time_to_close_hrs_avg hours
• Maximum Time to Close: summary.closed.time_to_close_hrs_max hours
• Average Time to Triage (closed): summary.closed.time_to_triage_hrs_avg hours
• Maximum Time to Triage (closed): summary.closed.time_to_triage_hrs_max hours
• Average Triage-to-Close Time: summary.closed.time_triaged_closed_hrs_avg hours
• Maximum Triage-to-Close Time: summary.closed.time_triaged_closed_hrs_max hours

Per-Component Summary

For each component (from components.*.summary):

Component	Total	Open	Closed	Triaged	Triage %	Avg Time to Triage	Avg Time to Close
Monitoring	15	1	14	13	86.7%	68 hrs	156 hrs
etcd	20	0	20	19	95.0%	84 hrs	192 hrs
kube-apiserver	27	1	26	27	100.0%	58 hrs	144 hrs

Additional Information

• Filters Applied: Lists any component or date filters used
• Data Scope: Notes which regressions are included based on date filtering
  • For GA'd releases: Regressions within development window (start to GA)
  • For in-development releases: Regressions from development start onwards

Examples

1. Summarize all regressions for a release:

   /teams:health-check-regressions 4.17
   

   Fetches and summarizes all regressions for release 4.17, automatically applying development window date filtering.

2. Filter by specific component (exact match):

   /teams:health-check-regressions 4.21 --components Monitoring
   

   Shows summary statistics for only the Monitoring component in release 4.21.

3. Filter by fuzzy search:

   /teams:health-check-regressions 4.21 --components network
   

   Finds all components containing "network" (case-insensitive) and shows summary statistics for all matches (e.g., "Networking / ovn-kubernetes", "Networking / DNS", etc.).

4. Filter by multiple search strings:

   /teams:health-check-regressions 4.21 --components etcd kube-
   

   Finds all components containing "etcd" OR "kube-" and shows combined summary statistics.

5. Specify custom date range:

   /teams:health-check-regressions 4.17 --start 2024-05-17 --end 2024-10-29
   

   Summarizes regressions within a specific date range:

   • Excludes regressions closed before 2024-05-17
   • Excludes regressions opened after 2024-10-29

6. In-development release:

   /teams:health-check-regressions 4.21
   

   Summarizes regressions for an in-development release:

   • Automatically fetches development_start date
   • No end date filtering (release not yet GA'd)
   • Shows current state of regression management

7. Filter by team:

   /teams:health-check-regressions 4.21 --team "API Server"
   

   Summarizes regressions for all components owned by the "API Server" team:

   • Automatically looks up all team components from team_component_map.json
   • Provides overall team-level summary (not per-component breakdown)
   • Use /teams:list-teams to see available team names

8. Team summary with custom date range:

   /teams:health-check-regressions 4.17 --team "Networking" --start 2024-05-17 --end 2024-10-29
   

   Summarizes regressions for the Networking team within a specific date range

Arguments

• $1 (required): Release version

  • Format: "X.Y" (e.g., "4.17", "4.21")
  • Must be a valid OpenShift release number

• $2+ (optional): Filter flags

  • --components <search1> [search2 ...]: Filter by component names using fuzzy search

    • Space-separated list of component search strings
    • Case-insensitive substring matching
    • Each search string matches all components containing that substring
    • If no components provided, all components are analyzed
    • Example: "network" matches "Networking / ovn-kubernetes", "Networking / DNS", etc.
    • Example: "kube-" matches "kube-apiserver", "kube-controller-manager", etc.
    • Mutually exclusive with --team

  • --team <team-name>: Filter by team name

    • Looks up all components for the team from team_component_map.json
    • Returns overall team summary as well as per-component breakdowns in JSON
    • Command presentation should focus on overall team summary
    • Use /teams:list-teams to see available team names
    • Team names are case-sensitive
    • Mutually exclusive with --components

  • --start <YYYY-MM-DD>: Filter by start date

    • Excludes regressions closed before this date
    • Defaults to development_start from release metadata if not provided

  • --end <YYYY-MM-DD>: Filter by end date

    • Excludes regressions opened after this date
    • Defaults to GA date from release metadata if not provided and release is GA'd
    • Omitted for in-development releases

Prerequisites

1. Python 3: Required to run the data fetching script

   • Check: which python3
   • Version: 3.6 or later

2. Network Access: Must be able to reach the component health API

   • Ensure HTTPS requests can be made
   • Check firewall and VPN settings if needed

3. API Configuration: The API endpoint must be configured in the script

   • Location: plugins/teams/skills/list-regressions/list_regressions.py
   • The script should have the correct API base URL

Notes

• The script uses Python's standard library only (no external dependencies)
• Output presents summary statistics in a readable format
• Diagnostic messages are written to stderr
• The script has a 30-second timeout for HTTP requests
• Summary statistics are based on all matching regressions (not limited by pagination)
• The --short flag is always used internally to optimize performance
• Infrastructure regressions are automatically filtered from counts
• Date filtering focuses analysis on the development window for accuracy
• This command internally uses /teams:list-regressions to fetch data
• For raw regression data, use /teams:list-regressions instead
• For health grading and analysis, use /teams:health-check instead

See Also

• Skill Documentation: plugins/teams/skills/list-regressions/SKILL.md
• Script: plugins/teams/skills/list-regressions/list_regressions.py
• Related Command: /teams:list-regressions (for raw regression data)
• Related Command: /teams:health-check (for health grading and analysis)
• Related Skill: get-release-dates (for fetching development window dates)