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from datetime import datetime
import json
import logging
import os
import os.path
from dask.utils import format_bytes
from tornado import escape
from tornado.websocket import WebSocketHandler
from tlz import first, merge
from ..utils import RequestHandler, redirect
from ...diagnostics.websocket import WebsocketPlugin
from ...metrics import time
from ...utils import log_errors, format_time
ns = {
func.__name__: func
for func in [format_bytes, format_time, datetime.fromtimestamp, time]
}
rel_path_statics = {"rel_path_statics": "../../.."}
logger = logging.getLogger(__name__)
class Workers(RequestHandler):
def get(self):
with log_errors():
self.render(
"workers.html",
title="Workers",
scheduler=self.server,
**merge(self.server.__dict__, ns, self.extra, rel_path_statics),
)
class Worker(RequestHandler):
def get(self, worker):
worker = escape.url_unescape(worker)
if worker not in self.server.workers:
self.send_error(404)
return
with log_errors():
self.render(
"worker.html",
title="Worker: " + worker,
scheduler=self.server,
Worker=worker,
**merge(self.server.__dict__, ns, self.extra, rel_path_statics),
)
class Task(RequestHandler):
def get(self, task):
task = escape.url_unescape(task)
if task not in self.server.tasks:
self.send_error(404)
return
with log_errors():
self.render(
"task.html",
title="Task: " + task,
Task=task,
scheduler=self.server,
**merge(self.server.__dict__, ns, self.extra, rel_path_statics),
)
class Logs(RequestHandler):
def get(self):
with log_errors():
logs = self.server.get_logs()
self.render(
"logs.html",
title="Logs",
logs=logs,
**merge(self.extra, rel_path_statics),
)
class WorkerLogs(RequestHandler):
async def get(self, worker):
with log_errors():
worker = escape.url_unescape(worker)
logs = await self.server.get_worker_logs(workers=[worker])
logs = logs[worker]
self.render(
"logs.html",
title="Logs: " + worker,
logs=logs,
**merge(self.extra, rel_path_statics),
)
class WorkerCallStacks(RequestHandler):
async def get(self, worker):
with log_errors():
worker = escape.url_unescape(worker)
keys = self.server.processing[worker]
call_stack = await self.server.get_call_stack(keys=keys)
self.render(
"call-stack.html",
title="Call Stacks: " + worker,
call_stack=call_stack,
**merge(self.extra, rel_path_statics),
)
class TaskCallStack(RequestHandler):
async def get(self, key):
with log_errors():
key = escape.url_unescape(key)
call_stack = await self.server.get_call_stack(keys=[key])
if not call_stack:
self.write(
"<p>Task not actively running. "
"It may be finished or not yet started</p>"
)
else:
self.render(
"call-stack.html",
title="Call Stack: " + key,
call_stack=call_stack,
**merge(self.extra, rel_path_statics),
)
class IndividualPlots(RequestHandler):
def get(self):
try:
from bokeh.server.tornado import BokehTornado
bokeh_application = first(
app
for app in self.server.http_application.applications
if isinstance(app, BokehTornado)
)
individual_bokeh = {
uri.strip("/").replace("-", " ").title(): uri
for uri in bokeh_application.app_paths
if uri.lstrip("/").startswith("individual-")
and not uri.endswith(".json")
}
individual_static = {
uri.strip("/")
.replace(".html", "")
.replace("-", " ")
.title(): "/statics/"
+ uri
for uri in os.listdir(
os.path.join(os.path.dirname(__file__), "..", "static")
)
if uri.lstrip("/").startswith("individual-") and uri.endswith(".html")
}
result = {**individual_bokeh, **individual_static}
self.write(result)
except (ImportError, StopIteration):
self.write({})
class EventstreamHandler(WebSocketHandler):
def initialize(self, dask_server=None, extra=None):
self.server = dask_server
self.extra = extra or {}
self.plugin = WebsocketPlugin(self, self.server)
self.server.add_plugin(self.plugin)
def send(self, name, data):
data["name"] = name
for k in list(data):
# Drop bytes objects for now
if isinstance(data[k], bytes):
del data[k]
self.write_message(data)
def open(self):
for worker in self.server.workers:
self.plugin.add_worker(self.server, worker)
def on_message(self, message):
message = json.loads(message)
if message["name"] == "ping":
self.send("pong", {"timestamp": str(datetime.now())})
def on_close(self):
self.server.remove_plugin(self.plugin)
routes = [
(r"info", redirect("info/main/workers.html"), {}),
(r"info/main/workers.html", Workers, {}),
(r"info/worker/(.*).html", Worker, {}),
(r"info/task/(.*).html", Task, {}),
(r"info/main/logs.html", Logs, {}),
(r"info/call-stacks/(.*).html", WorkerCallStacks, {}),
(r"info/call-stack/(.*).html", TaskCallStack, {}),
(r"info/logs/(.*).html", WorkerLogs, {}),
(r"individual-plots.json", IndividualPlots, {}),
(r"eventstream", EventstreamHandler, {}),
]
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