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(Claude) Render what the cache refresh committed, and write no entry rows - #399
A run refreshes the cache, then renders. A session file can grow in between, since sessions are written to while a run converts them. When it did, the render found that file's entry rows stale. It parsed the file again and wrote the rows itself, stamped with the file's new size and mtime. The session rows and project aggregates kept the counts the refresh had computed.
The run's pages then showed lines its session rows did not count, and the cache called the file current. On main, the next run notices only because the render's entry write leaves refresh_pending set, which makes that run refresh the whole project. Without that flag, the session row would stay behind until the file was written again.
The rule
Only the cache refresh writes entry rows. The render renders what the refresh committed. Lines written after the refresh appear on the next run.
Every render-side load passes snapshot=True to load_transcript, through load_directory_transcripts and _load_sessions_partial. That covers the session-scoped path, the streaming page loads, the full Phase 2 load, generate_single_session_file and the TUI's export.
In that mode the loader serves CacheManager.load_snapshot_entries. These are the rows the cache holds at the current content version, whatever the file's stamp says now. A parsed-entry store hit is also served; it is verified against the file and so holds the same rows.
It never parses the file, never writes the cache, and skips a file the cache has no rows for yet.
The next run finds a grown file modified, because nothing restamped it. In watch / serve --watch that is the next tick: the engine stamps the files before it converts. The cost is one tick of latency for a line that lands mid-render; nothing is lost.
Unchanged:
--no-cache and single-file mode, which have no rows and parse as before;
the hierarchy's no-cache-data fallback;
Codex's wholesale render, which writes entry rows and session rows from one load.
The TUI now refreshes the cache right before it exports a live session. Without that, the cache it renders could date from when it started.
Tests
test/test_render_snapshot.py grows a session file right after the refresh. It covers three output shapes plus a forced streaming run, each cold and over a populated cache, and also a watch engine driven tick by tick, generate_single_session_file, and the TUI export. For each it asserts that:
no entry row is written after the refresh;
the page shows what the refresh committed and not the late turn;
the next run or tick shows the late turn;
the session row then equals a cache built cold from the same files.
Its first commit is the red step: on main, the page shows the late turn while the session row does not count it, in all six cases.
Each part of the change is pinned by a mutation that fails at least one test:
the snapshot read serving nothing;
the snapshot read honouring freshness;
render mode off in load_transcript;
each render-mode call site;
the TUI's refresh.
test_tui_surrogate.py mocks the TUI's project data and load; it now mocks the new refresh too.
Docs
The rule is in dev-docs/application_model.md under the cache (§ 2.3). The watch tick's one-tick lag is in § 2.15, the entry store's decline in § 2.16 and the TUI's refresh in § 2.2. CONTRIBUTING.md's cache bullet gets one sentence.
Exports and watch updates now reflect a consistent view of session data captured at refresh time, preventing changes made during rendering from appearing partway through a result.
Session changes made after a refresh appear on the next run or watch update. TUI exports also refresh data before rendering.
Documentation
Clarified how refresh timing affects which session changes appear in rendered output.
…behind
A run refreshes the cache, then renders. When a session file grows in
between, the render finds its entry rows stale, parses the grown file
and writes the rows itself, stamped with the file's new size and mtime.
The session row keeps the counts the refresh computed. The run's
session page then shows a turn its session row does not count, and the
cache calls the file current.
The test grows the file right after the run's refresh, cold and over a
populated cache, in three output shapes, and asserts that the session
page shows the late turn exactly when the session row counts it. It
then asserts that a further run with no change brings the row level
with a cache built cold from the same files. Today the first assertion
fails in all six cases. The second holds only because the render's
entry write leaves the pending-refresh flag set, so the next run
refreshes the whole project.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A run refreshes the cache, then renders. A session file that grew in
between had its rows found stale by the render, which parsed the file
again and wrote the rows itself, stamped with the file's new size and
mtime. The session rows and aggregates kept the refresh's counts, so the
run's pages showed lines its session rows did not count, and the cache
called the file current: only the pending-refresh flag made the next run
look at the file again.
Only the refresh writes entry rows now. Every render-side load passes
`snapshot=True` to `load_transcript`, through `load_directory_transcripts`
and `_load_sessions_partial`: the session-scoped path, the streaming page
loads, the full Phase 2 load, `generate_single_session_file` and the
TUI's export. In that mode the loader serves
`CacheManager.load_snapshot_entries`, the rows the cache holds at the
current content version whatever the file's stamp says now, or a
verified parsed-entry store hit. It never parses the file and never
writes the cache, and it skips a file the cache has no rows for yet.
Lines written after the refresh appear on the next run, which finds the
file modified since nothing restamped it. In watch mode that is the next
tick: the engine stamps the files before it converts.
`--no-cache` and single-file mode have no rows and parse as before. The
hierarchy's no-cache-data fallback and Codex's wholesale render write
their entry rows and session rows from one load, and keep doing both.
The TUI now refreshes the cache right before it exports a live session,
since the cache it would otherwise render may date from its start.
The tests grow a file right after the refresh on each of these paths,
including a forced streaming run and a watch engine driven by hand.
They spy on the entry-row writers, check that the page shows what the
refresh committed and not the late turn, and check that the next run or
tick shows the turn and brings the session row level with a cold cache.
Each render-mode call site, the snapshot read and the TUI refresh is
pinned by a mutation that fails at least one test.
The rule is in dev-docs/application_model.md, under the cache (§ 2.3),
with the watch tick's lag in § 2.15, the entry store in § 2.16, and the
TUI's refresh in § 2.2.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The test mocks `get_cached_project_data` and `load_directory_transcripts`
so that the TUI's export never loads a transcript. The export now
refreshes the cache first, and that refresh read the mocked project
data, failed, and the export returned None. The test mocks the refresh
as well: what it checks is the scrubbing of the written page.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Render paths now load entry rows committed by a cache refresh. Snapshot reads avoid parsing or writing source files during rendering, so changes made after refresh appear on a later run or watch tick.
Changes: Render snapshot loading
Layer / File(s)
Summary
Snapshot cache retrieval claude_code_log/cache.py
Cached entry loading uses a shared retrieval path for timestamp ordering and date filtering. Snapshot reads bypass source-file freshness checks and return no rows when the cache data is unavailable or has an incompatible content version.
Refresh and render integration claude_code_log/converter.py, claude_code_log/tui.py, test/test_render_snapshot.py, test/test_tui_surrogate.py, CONTRIBUTING.md, dev-docs/application_model.md
Directory conversion, single-session export, and current-session TUI export request snapshots after refresh. Regression tests cover conversion formats, watch ticks, and exports. Documentation describes when changes made during rendering appear.
daaain/claude-code-log#374 — This change reads refreshed entry rows for rendering, but does not make concurrent refresh commits atomic.
Possibly related PRs
daaain/claude-code-log#384 — It refreshes unfiltered cache rows and applies date bounds during rendering; this change reads those rows in snapshot mode.
daaain/claude-code-log#365 — It adds refresh-pending state to entry writes; this change prevents render-side loads from writing entry rows after refresh.
daaain/claude-code-log#390 — It commits entry and derived rows together; this change renders the committed entry rows without rewriting them.
Suggested reviewers:daaain
Merge Risk: Minimal · up to 8d21a
No identified issue blocks merging; the hierarchy fallback still reads source files when cache data is unavailable.
Pre-merge checks: 4 · 1
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Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
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The title describes the main change: render the committed cache snapshot without writing entry rows.
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Full details: Docstring Coverage
Explanation
Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 21 functions across 5 files. (2 skipped: 2 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Files selected for processing: 7
CONTRIBUTING.md
claude_code_log/cache.py
claude_code_log/converter.py
claude_code_log/tui.py
dev-docs/application_model.md
test/test_render_snapshot.py
test/test_tui_surrogate.py
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The defect
A run refreshes the cache, then renders. A session file can grow in between, since sessions are written to while a run converts them. When it did, the render found that file's entry rows stale. It parsed the file again and wrote the rows itself, stamped with the file's new size and mtime. The session rows and project aggregates kept the counts the refresh had computed.
The run's pages then showed lines its session rows did not count, and the cache called the file current. On main, the next run notices only because the render's entry write leaves
refresh_pendingset, which makes that run refresh the whole project. Without that flag, the session row would stay behind until the file was written again.The rule
Only the cache refresh writes entry rows. The render renders what the refresh committed. Lines written after the refresh appear on the next run.
snapshot=Truetoload_transcript, throughload_directory_transcriptsand_load_sessions_partial. That covers the session-scoped path, the streaming page loads, the full Phase 2 load,generate_single_session_fileand the TUI's export.CacheManager.load_snapshot_entries. These are the rows the cache holds at the current content version, whatever the file's stamp says now. A parsed-entry store hit is also served; it is verified against the file and so holds the same rows.watch/serve --watchthat is the next tick: the engine stamps the files before it converts. The cost is one tick of latency for a line that lands mid-render; nothing is lost.--no-cacheand single-file mode, which have no rows and parse as before;Tests
test/test_render_snapshot.pygrows a session file right after the refresh. It covers three output shapes plus a forced streaming run, each cold and over a populated cache, and also a watch engine driven tick by tick,generate_single_session_file, and the TUI export. For each it asserts that:Its first commit is the red step: on main, the page shows the late turn while the session row does not count it, in all six cases.
Each part of the change is pinned by a mutation that fails at least one test:
load_transcript;test_tui_surrogate.pymocks the TUI's project data and load; it now mocks the new refresh too.Docs
The rule is in
dev-docs/application_model.mdunder the cache (§ 2.3). The watch tick's one-tick lag is in § 2.15, the entry store's decline in § 2.16 and the TUI's refresh in § 2.2. CONTRIBUTING.md's cache bullet gets one sentence.🤖 Generated with Claude Code
Summary by CodeRabbit