Fixed #1466

[altserg]

Ignore energy report messages for Transaction.Begin context

Summary by CodeRabbit

• New Features

  • Enhanced OCPP (Open Charge Point Protocol) data processing for charging sessions.
  • Introduced a new enumeration ReadingContext for improved context handling.
  • Improved handling of transaction meter values by adding context-specific filtering.

• Bug Fixes

  • Resolved potential data processing issues during transaction start.

[lbbrhzn]

@altserg can you add a description to this pull request please?

[coderabbitai]

Walkthrough

The pull request introduces a new enumeration ReadingContext to the import statements from ocpp.v16.enums and modifies the process_measurands method in the ChargePoint class. The update adds a condition to ignore messages with a Transaction Begin context when processing meter values, refining the handling of incoming data during transactions and ensuring that specific context values do not affect session energy metrics.

Changes

File	Change Summary
custom_components/ocpp/chargepoint.py	- Added ReadingContext enum import from ocpp.v16.enums - Modified process_measurands method to skip processing measurands with Transaction Begin context

Sequence Diagram

sequenceDiagram
    participant CP as Charge Point
    participant MS as Meter Service
    
    CP->>MS: Receive Meter Values
    alt Transaction Begin Context
        MS-->>CP: Ignore Specific Measurands
    else Normal Context
        MS->>CP: Process Meter Values
    end

Loading

Poem

🐇 In the world of charge and flow,
A rabbit hops where metrics grow.
With a context clear, we skip the start,
Keeping our data, a work of art.
OCPP's dance, so bright and spry,
Charging ahead, we reach for the sky! ⚡✨

---

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📥 Commits

Reviewing files that changed from the base of the PR and between 87ad713 and 823d6d0.

📒 Files selected for processing (1)

• custom_components/ocpp/chargepoint.py (2 hunks)

🔇 Additional comments (2)

custom_components/ocpp/chargepoint.py (2)

26-32: Good addition of the ReadingContext enum to imports.

The inclusion of ReadingContext to the imports is appropriate since it's needed for the new transaction begin context check in process_measurands.

---

635-647:

✅ Verification successful

Appropriate filter for Transaction Begin context messages.

This change properly ignores energy report messages with a Transaction Begin context, which addresses the issue stated in PR #1466. The filter is implemented at the right place in the code flow and maintains the existing indentation and structure.

The code maintains logical flow by using the continue statement to skip processing of these specific messages while allowing other measurands to be processed normally.

---

🏁 Script executed:

#!/bin/bash
# Check if the ReadingContext enum has a transaction_begin value
# to verify that this is a valid check

ast-grep --pattern 'ReadingContext.transaction_begin.value'

Length of output: 179

---

Transaction Begin Filter Verified

The check using ReadingContext.transaction_begin.value at line 636 correctly identifies Transaction Begin context messages. The use of the continue statement to skip processing these energy report messages is properly implemented per PR #1466. The logical flow and code structure remain intact.

✨ Finishing Touches

• 📝 Generate Docstrings

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

custom_components/ocpp/chargepoint.py (1)

780-792: Consider improving readability.

The nested conditions could be simplified and the comment could be more descriptive. Here's a suggested refactor:

-    # Ignore messages with Transaction Begin context
-    if context != ReadingContext.transaction_begin.value:
-        if is_transaction:
-            self._metrics[csess.session_energy.value].value = value
-            self._metrics[csess.session_energy.value].unit = unit
-            self._metrics[csess.session_energy.value].extra_attr[
-                cstat.id_tag.name
-            ] = self._metrics[cstat.id_tag.value].value
-        else:
-            self._metrics[measurand].value = value
-            self._metrics[measurand].unit = unit
-    else:
-        continue
+    # Skip processing for Transaction Begin context as these values
+    # should not contribute to energy metrics
+    if context == ReadingContext.transaction_begin.value:
+        continue
+
+    if is_transaction:
+        self._metrics[csess.session_energy.value].value = value
+        self._metrics[csess.session_energy.value].unit = unit
+        self._metrics[csess.session_energy.value].extra_attr[
+            cstat.id_tag.name
+        ] = self._metrics[cstat.id_tag.value].value
+    else:
+        self._metrics[measurand].value = value
+        self._metrics[measurand].unit = unit

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 88cafb7 and 87ad713.

📒 Files selected for processing (1)

• custom_components/ocpp/chargepoint.py (2 hunks)

🔇 Additional comments (2)

custom_components/ocpp/chargepoint.py (2)

31-37: LGTM! Import changes are appropriate.

The addition of ReadingContext enum is necessary for the new functionality and is correctly grouped with other enums from the same module.

---

780-792: LGTM! Changes correctly address the issue.

The implementation properly ignores energy report messages with Transaction Begin context, which aligns with the PR objective to fix issue #1466.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.75%. Comparing base (52f53ae) to head (6a69690).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1477   +/-   ##
=======================================
  Coverage   92.75%   92.75%           
=======================================
  Files          12       12           
  Lines        2028     2030    +2     
=======================================
+ Hits         1881     1883    +2     
  Misses        147      147           

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