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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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Merged
argszero merged 2 commits into from
Aug 5, 2026
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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) #403

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emrg: daemon start timeout shows emrgd.log tail (real error, not gene…
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emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…
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17 changes: 16 additions & 1 deletion emrg/client/daemon_manager.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
if is_running():
logger.info("emrgd started (pid=%d)", proc.pid)
return proc
raise RuntimeError("emrgd failed to start within timeout")
# R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
# config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
"""Return the last `lines` of a log file (empty string on any error)."""
try:
if not path.exists():
return ""
data = path.read_text(encoding="utf-8", errors="replace")
return "\n".join(data.rstrip().splitlines()[-lines:])
except OSError:
return ""


async def check_and_restart_if_stale() -> None:
Expand Down
23 changes: 23 additions & 0 deletions tests/test_daemon_manager.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
conn = self._conn()
asyncio.run(conn.close())
assert conn._ws.closed is True

class TestReadLogTail:
"""_read_log_tail — daemon start-timeout diagnostics (R124)."""

def test_tail_last_lines(self, tmp_path):
p = tmp_path / "emrgd.log"
p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
out = daemon_manager._read_log_tail(p, lines=5)
assert out == "line26\nline27\nline28\nline29\nline30"

def test_missing_file_returns_empty(self, tmp_path):
assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

def test_shorter_than_lines_returns_all(self, tmp_path):
p = tmp_path / "emrgd.log"
p.write_text("a\nb", encoding="utf-8")
assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

def test_invalid_utf8_replaced(self, tmp_path):
p = tmp_path / "emrgd.log"
p.write_bytes(b"ok\n\xff\xfebad\nend")
out = daemon_manager._read_log_tail(p, lines=5)
assert "end" in out and "\ufffd" in out
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codeBlock.parentElement.setAttribute('data-copy-added', 'true');
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btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
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})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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 Merged

argszero
merged 2 commits into

from

Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

Aug 5, 2026
a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
Skip to content
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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 Merged

argszero
merged 2 commits into

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Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

Aug 5, 2026
a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
Loading

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if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
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var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
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frag.appendChild(document.createTextNode(part));
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span.textContent = part;
frag.appendChild(span);
}
});
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}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
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var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
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observer.observe(document.body, { childList: true, subtree: true });
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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
Skip to content
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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 Merged

argszero
merged 2 commits into

from

Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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0120f3a

emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

Aug 5, 2026
a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
Skip to content
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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 Merged

argszero
merged 2 commits into

from

Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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0120f3a

emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

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a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
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(function() {
function tryTheater() {
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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argszero
merged 2 commits into

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Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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0120f3a

emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

Aug 5, 2026
a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

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Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

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Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
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}
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unstick();
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observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
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emrg: daemon start timeout shows emrgd.log tail (real error, not generic message) by argszero · Pull Request #403 · argszero/emrg · GitHub
Skip to content
emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)#403

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 Merged

argszero
merged 2 commits into

from

Aug 5, 2026
 Merged


emrg: daemon start timeout shows emrgd.log tail (real error, not generic message)
#403
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0120f3a

emrg: daemon start timeout shows emrgd.log tail (real error, not gene…

Aug 5, 2026
a249e95

emrg: add unit tests for _read_log_tail (R124 daemon timeout diagnost…

Aug 5, 2026

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17 changes: 16 additions & 1 deletion
emrg/client/daemon_manager.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,22 @@ async def start_daemon() -> subprocess.Popen:
 if is_running():
 logger.info("emrgd started (pid=%d)", proc.pid)
 return proc
 raise RuntimeError("emrgd failed to start within timeout")
 # R124: 超时后读取 emrgd.log 尾部打印真实失败原因（rant 2026-08-05T15:54:28 关联：
 # config.toml 解析错误时 CLI 只显示 'failed to start within timeout'，吞掉真实报错）
 tail = _read_log_tail(Path.home() / ".emrg" / "emrgd.log", lines=15)
 detail = f"\n emrgd.log 尾部:\n{tail}" if tail else ""
 raise RuntimeError(f"emrgd failed to start within timeout{detail}")


def _read_log_tail(path: Path, lines: int = 15) -> str:
 """Return the last `lines` of a log file (empty string on any error)."""
 try:
 if not path.exists():
 return ""
 data = path.read_text(encoding="utf-8", errors="replace")
 return "\n".join(data.rstrip().splitlines()[-lines:])
 except OSError:
 return ""


async def check_and_restart_if_stale() -> None:
Expand Down

23 changes: 23 additions & 0 deletions
tests/test_daemon_manager.py

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -287,3 +287,26 @@ def test_close_calls_ws_close(self):
 conn = self._conn()
 asyncio.run(conn.close())
 assert conn._ws.closed is True

class TestReadLogTail:
 """_read_log_tail — daemon start-timeout diagnostics (R124)."""

 def test_tail_last_lines(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("\n".join(f"line{i}" for i in range(1, 31)), encoding="utf-8")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert out == "line26\nline27\nline28\nline29\nline30"

 def test_missing_file_returns_empty(self, tmp_path):
 assert daemon_manager._read_log_tail(tmp_path / "nope.log") == ""

 def test_shorter_than_lines_returns_all(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_text("a\nb", encoding="utf-8")
 assert daemon_manager._read_log_tail(p, lines=10) == "a\nb"

 def test_invalid_utf8_replaced(self, tmp_path):
 p = tmp_path / "emrgd.log"
 p.write_bytes(b"ok\n\xff\xfebad\nend")
 out = daemon_manager._read_log_tail(p, lines=5)
 assert "end" in out and "\ufffd" in out
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