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Dataflow:

{Trigger} -> {End State}

Key Files:

  • entry/point/file.py:lines - Flow entry point
  • processing/file.py:lines - Core processing
  • output/file.py:lines - Flow completion

Trigger

{What initiates this flow. Be specific about the event, user action, or system condition that starts this sequence.}

Entry Point: path/to/entry.py:line

Trigger Conditions:

  • Condition 1
  • Condition 2
  • Condition 3

End State

{What constitutes successful completion of this flow. Describe the expected outcome and any side effects.}

Success Criteria:

  • Criterion 1
  • Criterion 2
  • Criterion 3

Side Effects:

  • Database updates
  • Cache invalidation
  • Event emissions

Sequence Diagram

sequenceDiagram
    participant U as User/Trigger
    participant A as Component A<br/>path/file.py:line
    participant B as Component B<br/>path/file.py:line
    participant C as Component C<br/>path/file.py:line
    participant D as Database<br/>models/file.py:line

    U->>A: 1. Initial request/event
    activate A
    A->>B: 2. Process data
    activate B
    B->>D: 3. Query/update
    D-->>B: 4. Result
    B-->>A: 5. Processed result
    deactivate B
    A->>C: 6. Notify/broadcast
    A-->>U: 7. Response
    deactivate A

Step-by-Step Trace

Step 1:

Location: path/to/file.py:67-89

Input:

{
  "field": "example value",
  "another_field": 123
}

Processing:

Key code path:

# From path/to/file.py:67-75
def handle_input(self, data: InputType) -> ProcessedType:
    # Validation
    validated = self.validate(data)
    # Processing
    return self.process(validated)

Output:

{
  "processed_field": "transformed value",
  "status": "success"
}

Next: Step 2

Step 2:

Location: path/to/another/file.py:23-45

Input:

Processing:

Output:

{
  "result": "value"
}

Next: Step 3

Step 3:

Location: path/to/final/file.py:100-120

Input:

Processing:

Output:

Next: Flow complete

Error Paths

Error Path 1:

Trigger: When {condition} occurs at Step {N}.

Sequence:

sequenceDiagram
    participant A as Component A
    participant B as Component B

    A->>B: Request
    B--xA: Error response
    A->>A: Handle error
    A-->>A: Retry or fallback

Recovery: {How the system recovers or what the user sees.}

Error Path 2:

Trigger: When {condition} occurs.

Handling: {How it's handled.}

Performance Characteristics

Metric Typical Value Notes
End-to-end latency ~Xms Under normal load
Database queries N Per flow execution
External API calls N Per flow execution

Monitoring

Key Metrics:

  • metric_name - What it measures
  • another_metric - What it measures

Log Patterns:

INFO: Flow started - {flow_id}
DEBUG: Step 1 complete - {details}
INFO: Flow completed - {flow_id} in {duration}ms