store total share count and work within shares
[p2pool.git] / p2pool / web.py
1 from __future__ import division
2
3 import errno
4 import json
5 import os
6 import sys
7 import time
8 import traceback
9
10 from twisted.internet import defer, task
11 from twisted.python import log
12 from twisted.web import resource, static
13
14 import p2pool
15 from bitcoin import data as bitcoin_data
16 from . import data as p2pool_data
17 from util import deferred_resource, graph, math, memory, pack, variable
18
19 def _atomic_read(filename):
20     try:
21         with open(filename, 'rb') as f:
22             return f.read()
23     except IOError, e:
24         if e.errno != errno.ENOENT:
25             raise
26     try:
27         with open(filename + '.new', 'rb') as f:
28             return f.read()
29     except IOError, e:
30         if e.errno != errno.ENOENT:
31             raise
32     return None
33
34 def _atomic_write(filename, data):
35     with open(filename + '.new', 'wb') as f:
36         f.write(data)
37         f.flush()
38         try:
39             os.fsync(f.fileno())
40         except:
41             pass
42     try:
43         os.rename(filename + '.new', filename)
44     except: # XXX windows can't overwrite
45         os.remove(filename)
46         os.rename(filename + '.new', filename)
47
48 def get_web_root(wb, datadir_path, bitcoind_warning_var, stop_event=variable.Event()):
49     node = wb.node
50     start_time = time.time()
51     
52     web_root = resource.Resource()
53     
54     def get_users():
55         height, last = node.tracker.get_height_and_last(node.best_share_var.value)
56         weights, total_weight, donation_weight = node.tracker.get_cumulative_weights(node.best_share_var.value, min(height, 720), 65535*2**256)
57         res = {}
58         for script in sorted(weights, key=lambda s: weights[s]):
59             res[bitcoin_data.script2_to_address(script, node.net.PARENT)] = weights[script]/total_weight
60         return res
61     
62     def get_current_scaled_txouts(scale, trunc=0):
63         txouts = node.get_current_txouts()
64         total = sum(txouts.itervalues())
65         results = dict((script, value*scale//total) for script, value in txouts.iteritems())
66         if trunc > 0:
67             total_random = 0
68             random_set = set()
69             for s in sorted(results, key=results.__getitem__):
70                 if results[s] >= trunc:
71                     break
72                 total_random += results[s]
73                 random_set.add(s)
74             if total_random:
75                 winner = math.weighted_choice((script, results[script]) for script in random_set)
76                 for script in random_set:
77                     del results[script]
78                 results[winner] = total_random
79         if sum(results.itervalues()) < int(scale):
80             results[math.weighted_choice(results.iteritems())] += int(scale) - sum(results.itervalues())
81         return results
82     
83     def get_patron_sendmany(total=None, trunc='0.01'):
84         if total is None:
85             return 'need total argument. go to patron_sendmany/<TOTAL>'
86         total = int(float(total)*1e8)
87         trunc = int(float(trunc)*1e8)
88         return json.dumps(dict(
89             (bitcoin_data.script2_to_address(script, node.net.PARENT), value/1e8)
90             for script, value in get_current_scaled_txouts(total, trunc).iteritems()
91             if bitcoin_data.script2_to_address(script, node.net.PARENT) is not None
92         ))
93     
94     def get_global_stats():
95         # averaged over last hour
96         if node.tracker.get_height(node.best_share_var.value) < 10:
97             return None
98         lookbehind = min(node.tracker.get_height(node.best_share_var.value), 3600//node.net.SHARE_PERIOD)
99         
100         nonstale_hash_rate = p2pool_data.get_pool_attempts_per_second(node.tracker, node.best_share_var.value, lookbehind)
101         stale_prop = p2pool_data.get_average_stale_prop(node.tracker, node.best_share_var.value, lookbehind)
102         return dict(
103             pool_nonstale_hash_rate=nonstale_hash_rate,
104             pool_hash_rate=nonstale_hash_rate/(1 - stale_prop),
105             pool_stale_prop=stale_prop,
106             min_difficulty=bitcoin_data.target_to_difficulty(node.tracker.items[node.best_share_var.value].max_target),
107         )
108     
109     def get_local_stats():
110         if node.tracker.get_height(node.best_share_var.value) < 10:
111             return None
112         lookbehind = min(node.tracker.get_height(node.best_share_var.value), 3600//node.net.SHARE_PERIOD)
113         
114         global_stale_prop = p2pool_data.get_average_stale_prop(node.tracker, node.best_share_var.value, lookbehind)
115         
116         my_unstale_count = sum(1 for share in node.tracker.get_chain(node.best_share_var.value, lookbehind) if share.hash in wb.my_share_hashes)
117         my_orphan_count = sum(1 for share in node.tracker.get_chain(node.best_share_var.value, lookbehind) if share.hash in wb.my_share_hashes and share.share_data['stale_info'] == 'orphan')
118         my_doa_count = sum(1 for share in node.tracker.get_chain(node.best_share_var.value, lookbehind) if share.hash in wb.my_share_hashes and share.share_data['stale_info'] == 'doa')
119         my_share_count = my_unstale_count + my_orphan_count + my_doa_count
120         my_stale_count = my_orphan_count + my_doa_count
121         
122         my_stale_prop = my_stale_count/my_share_count if my_share_count != 0 else None
123         
124         my_work = sum(bitcoin_data.target_to_average_attempts(share.target)
125             for share in node.tracker.get_chain(node.best_share_var.value, lookbehind - 1)
126             if share.hash in wb.my_share_hashes)
127         actual_time = (node.tracker.items[node.best_share_var.value].timestamp -
128             node.tracker.items[node.tracker.get_nth_parent_hash(node.best_share_var.value, lookbehind - 1)].timestamp)
129         share_att_s = my_work / actual_time
130         
131         miner_hash_rates, miner_dead_hash_rates = wb.get_local_rates()
132         (stale_orphan_shares, stale_doa_shares), shares, _ = wb.get_stale_counts()
133         
134         return dict(
135             my_hash_rates_in_last_hour=dict(
136                 note="DEPRECATED",
137                 nonstale=share_att_s,
138                 rewarded=share_att_s/(1 - global_stale_prop),
139                 actual=share_att_s/(1 - my_stale_prop) if my_stale_prop is not None else 0, # 0 because we don't have any shares anyway
140             ),
141             my_share_counts_in_last_hour=dict(
142                 shares=my_share_count,
143                 unstale_shares=my_unstale_count,
144                 stale_shares=my_stale_count,
145                 orphan_stale_shares=my_orphan_count,
146                 doa_stale_shares=my_doa_count,
147             ),
148             my_stale_proportions_in_last_hour=dict(
149                 stale=my_stale_prop,
150                 orphan_stale=my_orphan_count/my_share_count if my_share_count != 0 else None,
151                 dead_stale=my_doa_count/my_share_count if my_share_count != 0 else None,
152             ),
153             miner_hash_rates=miner_hash_rates,
154             miner_dead_hash_rates=miner_dead_hash_rates,
155             efficiency_if_miner_perfect=(1 - stale_orphan_shares/shares)/(1 - global_stale_prop) if shares else None, # ignores dead shares because those are miner's fault and indicated by pseudoshare rejection
156             efficiency=(1 - (stale_orphan_shares+stale_doa_shares)/shares)/(1 - global_stale_prop) if shares else None,
157             peers=dict(
158                 incoming=sum(1 for peer in node.p2p_node.peers.itervalues() if peer.incoming),
159                 outgoing=sum(1 for peer in node.p2p_node.peers.itervalues() if not peer.incoming),
160             ),
161             shares=dict(
162                 total=shares,
163                 orphan=stale_orphan_shares,
164                 dead=stale_doa_shares,
165             ),
166             uptime=time.time() - start_time,
167             attempts_to_share=bitcoin_data.target_to_average_attempts(node.tracker.items[node.best_share_var.value].max_target),
168             attempts_to_block=bitcoin_data.target_to_average_attempts(node.bitcoind_work.value['bits'].target),
169             block_value=node.bitcoind_work.value['subsidy']*1e-8,
170             warnings=p2pool_data.get_warnings(node.tracker, node.best_share_var.value, node.net, bitcoind_warning_var.value, node.bitcoind_work.value),
171             donation_proportion=wb.donation_percentage/100,
172         )
173     
174     class WebInterface(deferred_resource.DeferredResource):
175         def __init__(self, func, mime_type='application/json', args=()):
176             deferred_resource.DeferredResource.__init__(self)
177             self.func, self.mime_type, self.args = func, mime_type, args
178         
179         def getChild(self, child, request):
180             return WebInterface(self.func, self.mime_type, self.args + (child,))
181         
182         @defer.inlineCallbacks
183         def render_GET(self, request):
184             request.setHeader('Content-Type', self.mime_type)
185             request.setHeader('Access-Control-Allow-Origin', '*')
186             res = yield self.func(*self.args)
187             defer.returnValue(json.dumps(res) if self.mime_type == 'application/json' else res)
188     
189     def decent_height():
190         return min(node.tracker.get_height(node.best_share_var.value), 720)
191     web_root.putChild('rate', WebInterface(lambda: p2pool_data.get_pool_attempts_per_second(node.tracker, node.best_share_var.value, decent_height())/(1-p2pool_data.get_average_stale_prop(node.tracker, node.best_share_var.value, decent_height()))))
192     web_root.putChild('difficulty', WebInterface(lambda: bitcoin_data.target_to_difficulty(node.tracker.items[node.best_share_var.value].max_target)))
193     web_root.putChild('users', WebInterface(get_users))
194     web_root.putChild('user_stales', WebInterface(lambda: dict((bitcoin_data.pubkey_hash_to_address(ph, node.net.PARENT), prop) for ph, prop in
195         p2pool_data.get_user_stale_props(node.tracker, node.best_share_var.value, node.tracker.get_height(node.best_share_var.value)).iteritems())))
196     web_root.putChild('fee', WebInterface(lambda: wb.worker_fee))
197     web_root.putChild('current_payouts', WebInterface(lambda: dict((bitcoin_data.script2_to_address(script, node.net.PARENT), value/1e8) for script, value in node.get_current_txouts().iteritems())))
198     web_root.putChild('patron_sendmany', WebInterface(get_patron_sendmany, 'text/plain'))
199     web_root.putChild('global_stats', WebInterface(get_global_stats))
200     web_root.putChild('local_stats', WebInterface(get_local_stats))
201     web_root.putChild('peer_addresses', WebInterface(lambda: ' '.join('%s%s' % (peer.transport.getPeer().host, ':'+str(peer.transport.getPeer().port) if peer.transport.getPeer().port != node.net.P2P_PORT else '') for peer in node.p2p_node.peers.itervalues())))
202     web_root.putChild('peer_txpool_sizes', WebInterface(lambda: dict(('%s:%i' % (peer.transport.getPeer().host, peer.transport.getPeer().port), peer.remembered_txs_size) for peer in node.p2p_node.peers.itervalues())))
203     web_root.putChild('pings', WebInterface(defer.inlineCallbacks(lambda: defer.returnValue(
204         dict([(a, (yield b)) for a, b in
205             [(
206                 '%s:%i' % (peer.transport.getPeer().host, peer.transport.getPeer().port),
207                 defer.inlineCallbacks(lambda peer=peer: defer.returnValue(
208                     min([(yield peer.do_ping().addCallback(lambda x: x/0.001).addErrback(lambda fail: None)) for i in xrange(3)])
209                 ))()
210             ) for peer in list(node.p2p_node.peers.itervalues())]
211         ])
212     ))))
213     web_root.putChild('peer_versions', WebInterface(lambda: dict(('%s:%i' % peer.addr, peer.other_sub_version) for peer in node.p2p_node.peers.itervalues())))
214     web_root.putChild('payout_addr', WebInterface(lambda: bitcoin_data.pubkey_hash_to_address(wb.my_pubkey_hash, node.net.PARENT)))
215     web_root.putChild('recent_blocks', WebInterface(lambda: [dict(
216         ts=s.timestamp,
217         hash='%064x' % s.header_hash,
218         number=pack.IntType(24).unpack(s.share_data['coinbase'][1:4]) if len(s.share_data['coinbase']) >= 4 else None,
219         share='%064x' % s.hash,
220     ) for s in node.tracker.get_chain(node.best_share_var.value, min(node.tracker.get_height(node.best_share_var.value), 24*60*60//node.net.SHARE_PERIOD)) if s.pow_hash <= s.header['bits'].target]))
221     web_root.putChild('uptime', WebInterface(lambda: time.time() - start_time))
222     web_root.putChild('stale_rates', WebInterface(lambda: p2pool_data.get_stale_counts(node.tracker, node.best_share_var.value, decent_height(), rates=True)))
223     
224     new_root = resource.Resource()
225     web_root.putChild('web', new_root)
226     
227     stat_log = []
228     if os.path.exists(os.path.join(datadir_path, 'stats')):
229         try:
230             with open(os.path.join(datadir_path, 'stats'), 'rb') as f:
231                 stat_log = json.loads(f.read())
232         except:
233             log.err(None, 'Error loading stats:')
234     def update_stat_log():
235         while stat_log and stat_log[0]['time'] < time.time() - 24*60*60:
236             stat_log.pop(0)
237         
238         lookbehind = 3600//node.net.SHARE_PERIOD
239         if node.tracker.get_height(node.best_share_var.value) < lookbehind:
240             return None
241         
242         global_stale_prop = p2pool_data.get_average_stale_prop(node.tracker, node.best_share_var.value, lookbehind)
243         (stale_orphan_shares, stale_doa_shares), shares, _ = wb.get_stale_counts()
244         miner_hash_rates, miner_dead_hash_rates = wb.get_local_rates()
245         
246         stat_log.append(dict(
247             time=time.time(),
248             pool_hash_rate=p2pool_data.get_pool_attempts_per_second(node.tracker, node.best_share_var.value, lookbehind)/(1-global_stale_prop),
249             pool_stale_prop=global_stale_prop,
250             local_hash_rates=miner_hash_rates,
251             local_dead_hash_rates=miner_dead_hash_rates,
252             shares=shares,
253             stale_shares=stale_orphan_shares + stale_doa_shares,
254             stale_shares_breakdown=dict(orphan=stale_orphan_shares, doa=stale_doa_shares),
255             current_payout=node.get_current_txouts().get(bitcoin_data.pubkey_hash_to_script2(wb.my_pubkey_hash), 0)*1e-8,
256             peers=dict(
257                 incoming=sum(1 for peer in node.p2p_node.peers.itervalues() if peer.incoming),
258                 outgoing=sum(1 for peer in node.p2p_node.peers.itervalues() if not peer.incoming),
259             ),
260             attempts_to_share=bitcoin_data.target_to_average_attempts(node.tracker.items[node.best_share_var.value].max_target),
261             attempts_to_block=bitcoin_data.target_to_average_attempts(node.bitcoind_work.value['bits'].target),
262             block_value=node.bitcoind_work.value['subsidy']*1e-8,
263         ))
264         
265         with open(os.path.join(datadir_path, 'stats'), 'wb') as f:
266             f.write(json.dumps(stat_log))
267     x = task.LoopingCall(update_stat_log)
268     x.start(5*60)
269     stop_event.watch(x.stop)
270     new_root.putChild('log', WebInterface(lambda: stat_log))
271     
272     def get_share(share_hash_str):
273         if int(share_hash_str, 16) not in node.tracker.items:
274             return None
275         share = node.tracker.items[int(share_hash_str, 16)]
276         
277         return dict(
278             parent='%064x' % share.previous_hash,
279             children=['%064x' % x for x in sorted(node.tracker.reverse.get(share.hash, set()), key=lambda sh: -len(node.tracker.reverse.get(sh, set())))], # sorted from most children to least children
280             type_name=type(share).__name__,
281             local=dict(
282                 verified=share.hash in node.tracker.verified.items,
283                 time_first_seen=start_time if share.time_seen == 0 else share.time_seen,
284                 peer_first_received_from=share.peer_addr,
285             ),
286             share_data=dict(
287                 timestamp=share.timestamp,
288                 target=share.target,
289                 max_target=share.max_target,
290                 payout_address=bitcoin_data.script2_to_address(share.new_script, node.net.PARENT),
291                 donation=share.share_data['donation']/65535,
292                 stale_info=share.share_data['stale_info'],
293                 nonce=share.share_data['nonce'],
294                 desired_version=share.share_data['desired_version'],
295                 absheight=share.absheight,
296                 abswork=share.abswork,
297             ),
298             block=dict(
299                 hash='%064x' % share.header_hash,
300                 header=dict(
301                     version=share.header['version'],
302                     previous_block='%064x' % share.header['previous_block'],
303                     merkle_root='%064x' % share.header['merkle_root'],
304                     timestamp=share.header['timestamp'],
305                     target=share.header['bits'].target,
306                     nonce=share.header['nonce'],
307                 ),
308                 gentx=dict(
309                     hash='%064x' % share.gentx_hash,
310                     coinbase=share.share_data['coinbase'].ljust(2, '\x00').encode('hex'),
311                     value=share.share_data['subsidy']*1e-8,
312                 ),
313                 txn_count=len(list(share.iter_transaction_hash_refs())),
314             ),
315         )
316     new_root.putChild('share', WebInterface(lambda share_hash_str: get_share(share_hash_str)))
317     new_root.putChild('heads', WebInterface(lambda: ['%064x' % x for x in node.tracker.heads]))
318     new_root.putChild('verified_heads', WebInterface(lambda: ['%064x' % x for x in node.tracker.verified.heads]))
319     new_root.putChild('tails', WebInterface(lambda: ['%064x' % x for t in node.tracker.tails for x in node.tracker.reverse.get(t, set())]))
320     new_root.putChild('verified_tails', WebInterface(lambda: ['%064x' % x for t in node.tracker.verified.tails for x in node.tracker.verified.reverse.get(t, set())]))
321     new_root.putChild('best_share_hash', WebInterface(lambda: '%064x' % node.best_share_var.value))
322     def get_share_data(share_hash_str):
323         if int(share_hash_str, 16) not in node.tracker.items:
324             return ''
325         share = node.tracker.items[int(share_hash_str, 16)]
326         return p2pool_data.share_type.pack(share.as_share1a())
327     new_root.putChild('share_data', WebInterface(lambda share_hash_str: get_share_data(share_hash_str), 'application/octet-stream'))
328     new_root.putChild('currency_info', WebInterface(lambda: dict(
329         symbol=node.net.PARENT.SYMBOL,
330         block_explorer_url_prefix=node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
331         address_explorer_url_prefix=node.net.PARENT.ADDRESS_EXPLORER_URL_PREFIX,
332     )))
333     new_root.putChild('version', WebInterface(lambda: p2pool.__version__))
334     
335     hd_path = os.path.join(datadir_path, 'graph_db')
336     hd_data = _atomic_read(hd_path)
337     hd_obj = {}
338     if hd_data is not None:
339         try:
340             hd_obj = json.loads(hd_data)
341         except Exception:
342             log.err(None, 'Error reading graph database:')
343     dataview_descriptions = {
344         'last_hour': graph.DataViewDescription(150, 60*60),
345         'last_day': graph.DataViewDescription(300, 60*60*24),
346         'last_week': graph.DataViewDescription(300, 60*60*24*7),
347         'last_month': graph.DataViewDescription(300, 60*60*24*30),
348         'last_year': graph.DataViewDescription(300, 60*60*24*365.25),
349     }
350     def build_desired_rates(ds_name, ds_desc, dv_name, dv_desc, obj):
351         if not obj:
352             last_bin_end = 0
353             bins = dv_desc.bin_count*[{}]
354         else:
355             pool_rates = obj['pool_rates'][dv_name]
356             desired_versions = obj['desired_versions'][dv_name]
357             def get_total_pool_rate(t):
358                 n = int((pool_rates['last_bin_end'] - t)/dv_desc.bin_width)
359                 if n < 0 or n >= dv_desc.bin_count:
360                     return None
361                 total = sum(x[0] for x in pool_rates['bins'][n].values())
362                 count = math.mean(x[1] for x in pool_rates['bins'][n].values())
363                 if count == 0:
364                     return None
365                 return total/count
366             last_bin_end = desired_versions['last_bin_end']
367             bins = [dict((name, (total*get_total_pool_rate(last_bin_end - (i+1/2)*dv_desc.bin_width), count)) for name, (total, count) in desired_versions['bins'][i].iteritems()) for i in xrange(dv_desc.bin_count)]
368         return graph.DataView(dv_desc, ds_desc, last_bin_end, bins)
369     hd = graph.HistoryDatabase.from_obj({
370         'local_hash_rate': graph.DataStreamDescription(dataview_descriptions, is_gauge=False),
371         'local_dead_hash_rate': graph.DataStreamDescription(dataview_descriptions, is_gauge=False),
372         'local_share_hash_rate': graph.DataStreamDescription(dataview_descriptions, is_gauge=False),
373         'local_dead_share_hash_rate': graph.DataStreamDescription(dataview_descriptions, is_gauge=False),
374         'pool_rates': graph.DataStreamDescription(dataview_descriptions, multivalues=True,
375             multivalue_undefined_means_0=True),
376         'current_payout': graph.DataStreamDescription(dataview_descriptions),
377         'current_payouts': graph.DataStreamDescription(dataview_descriptions, multivalues=True),
378         'incoming_peers': graph.DataStreamDescription(dataview_descriptions),
379         'outgoing_peers': graph.DataStreamDescription(dataview_descriptions),
380         'miner_hash_rates': graph.DataStreamDescription(dataview_descriptions, is_gauge=False, multivalues=True),
381         'miner_dead_hash_rates': graph.DataStreamDescription(dataview_descriptions, is_gauge=False, multivalues=True),
382         'desired_versions': graph.DataStreamDescription(dataview_descriptions, multivalues=True,
383             multivalue_undefined_means_0=True),
384         'desired_version_rates': graph.DataStreamDescription(dataview_descriptions, multivalues=True,
385             multivalue_undefined_means_0=True, default_func=build_desired_rates),
386         'traffic_rate': graph.DataStreamDescription(dataview_descriptions, is_gauge=False, multivalues=True),
387         'getwork_latency': graph.DataStreamDescription(dataview_descriptions),
388         'memory_usage': graph.DataStreamDescription(dataview_descriptions),
389     }, hd_obj)
390     x = task.LoopingCall(lambda: _atomic_write(hd_path, json.dumps(hd.to_obj())))
391     x.start(100)
392     stop_event.watch(x.stop)
393     @wb.pseudoshare_received.watch
394     def _(work, dead, user):
395         t = time.time()
396         hd.datastreams['local_hash_rate'].add_datum(t, work)
397         if dead:
398             hd.datastreams['local_dead_hash_rate'].add_datum(t, work)
399         if user is not None:
400             hd.datastreams['miner_hash_rates'].add_datum(t, {user: work})
401             if dead:
402                 hd.datastreams['miner_dead_hash_rates'].add_datum(t, {user: work})
403     @wb.share_received.watch
404     def _(work, dead):
405         t = time.time()
406         hd.datastreams['local_share_hash_rate'].add_datum(t, work)
407         if dead:
408             hd.datastreams['local_dead_share_hash_rate'].add_datum(t, work)
409     @node.p2p_node.traffic_happened.watch
410     def _(name, bytes):
411         hd.datastreams['traffic_rate'].add_datum(time.time(), {name: bytes})
412     def add_point():
413         if node.tracker.get_height(node.best_share_var.value) < 10:
414             return None
415         lookbehind = min(node.net.CHAIN_LENGTH, 60*60//node.net.SHARE_PERIOD, node.tracker.get_height(node.best_share_var.value))
416         t = time.time()
417         
418         pool_rates = p2pool_data.get_stale_counts(node.tracker, node.best_share_var.value, lookbehind, rates=True)
419         pool_total = sum(pool_rates.itervalues())
420         hd.datastreams['pool_rates'].add_datum(t, pool_rates)
421         
422         current_txouts = node.get_current_txouts()
423         hd.datastreams['current_payout'].add_datum(t, current_txouts.get(bitcoin_data.pubkey_hash_to_script2(wb.my_pubkey_hash), 0)*1e-8)
424         miner_hash_rates, miner_dead_hash_rates = wb.get_local_rates()
425         current_txouts_by_address = dict((bitcoin_data.script2_to_address(script, node.net.PARENT), amount) for script, amount in current_txouts.iteritems())
426         hd.datastreams['current_payouts'].add_datum(t, dict((user, current_txouts_by_address[user]*1e-8) for user in miner_hash_rates if user in current_txouts_by_address))
427         
428         hd.datastreams['incoming_peers'].add_datum(t, sum(1 for peer in node.p2p_node.peers.itervalues() if peer.incoming))
429         hd.datastreams['outgoing_peers'].add_datum(t, sum(1 for peer in node.p2p_node.peers.itervalues() if not peer.incoming))
430         
431         vs = p2pool_data.get_desired_version_counts(node.tracker, node.best_share_var.value, lookbehind)
432         vs_total = sum(vs.itervalues())
433         hd.datastreams['desired_versions'].add_datum(t, dict((str(k), v/vs_total) for k, v in vs.iteritems()))
434         hd.datastreams['desired_version_rates'].add_datum(t, dict((str(k), v/vs_total*pool_total) for k, v in vs.iteritems()))
435         try:
436             hd.datastreams['memory_usage'].add_datum(t, memory.resident())
437         except:
438             if p2pool.DEBUG:
439                 traceback.print_exc()
440     x = task.LoopingCall(add_point)
441     x.start(5)
442     stop_event.watch(x.stop)
443     @node.bitcoind_work.changed.watch
444     def _(new_work):
445         hd.datastreams['getwork_latency'].add_datum(time.time(), new_work['latency'])
446     new_root.putChild('graph_data', WebInterface(lambda source, view: hd.datastreams[source].dataviews[view].get_data(time.time())))
447     
448     web_root.putChild('static', static.File(os.path.join(os.path.dirname(sys.argv[0]), 'web-static')))
449     
450     return web_root