src/allmydata/web/introweb.py

   1
   2 import time
   3 from nevow import rend, inevow
   4 from foolscap.api import SturdyRef
   5 from twisted.internet import address
   6 import allmydata
   7 import simplejson
   8 from allmydata import get_package_versions_string
   9 from allmydata.util import idlib
  10 from common import getxmlfile, get_arg
  11
  12 class IntroducerRoot(rend.Page):
  13
  14     addSlash = True
  15     docFactory = getxmlfile("introducer.xhtml")
  16
  17     child_operations = None
  18
  19     def __init__(self, introducer_node):
  20         self.introducer_node = introducer_node
  21         self.introducer_service = introducer_node.getServiceNamed("introducer")
  22         rend.Page.__init__(self, introducer_node)
  23
  24     def renderHTTP(self, ctx):
  25         t = get_arg(inevow.IRequest(ctx), "t")
  26         if t == "json":
  27             return self.render_JSON(ctx)
  28         return rend.Page.renderHTTP(self, ctx)
  29
  30     def render_JSON(self, ctx):
  31         res = {}
  32         clients = self.introducer_service.get_subscribers()
  33         subscription_summary = dict([ (name, len(clients[name]))
  34                                       for name in clients ])
  35         res["subscription_summary"] = subscription_summary
  36
  37         announcement_summary = {}
  38         service_hosts = {}
  39         for (ann,when) in self.introducer_service.get_announcements().values():
  40             (furl, service_name, ri_name, nickname, ver, oldest) = ann
  41             if service_name not in announcement_summary:
  42                 announcement_summary[service_name] = 0
  43             announcement_summary[service_name] += 1
  44             if service_name not in service_hosts:
  45                 service_hosts[service_name] = set()
  46             # it's nice to know how many distinct hosts are available for
  47             # each service. We define a "host" by a set of addresses
  48             # (hostnames or ipv4 addresses), which we extract from the
  49             # connection hints. In practice, this is usually close
  50             # enough: when multiple services are run on a single host,
  51             # they're usually either configured with the same addresses,
  52             # or setLocationAutomatically picks up the same interfaces.
  53             locations = SturdyRef(furl).getTubRef().getLocations()
  54             # list of tuples, ("ipv4", host, port)
  55             host = frozenset([hint[1]
  56                               for hint in locations
  57                               if hint[0] == "ipv4"])
  58             service_hosts[service_name].add(host)
  59         res["announcement_summary"] = announcement_summary
  60         distinct_hosts = dict([(name, len(hosts))
  61                                for (name, hosts)
  62                                in service_hosts.iteritems()])
  63         res["announcement_distinct_hosts"] = distinct_hosts
  64
  65         return simplejson.dumps(res, indent=1) + "\n"
  66
  67     def data_version(self, ctx, data):
  68         return get_package_versions_string()
  69     def data_import_path(self, ctx, data):
  70         return str(allmydata)
  71     def data_my_nodeid(self, ctx, data):
  72         return idlib.nodeid_b2a(self.introducer_node.nodeid)
  73
  74     def render_announcement_summary(self, ctx, data):
  75         services = {}
  76         for (ann,when) in self.introducer_service.get_announcements().values():
  77             (furl, service_name, ri_name, nickname, ver, oldest) = ann
  78             if service_name not in services:
  79                 services[service_name] = 0
  80             services[service_name] += 1
  81         service_names = services.keys()
  82         service_names.sort()
  83         return ", ".join(["%s: %d" % (service_name, services[service_name])
  84                           for service_name in service_names])
  85
  86     def render_client_summary(self, ctx, data):
  87         clients = self.introducer_service.get_subscribers()
  88         service_names = clients.keys()
  89         service_names.sort()
  90         return ", ".join(["%s: %d" % (service_name, len(clients[service_name]))
  91                           for service_name in service_names])
  92
  93     def data_services(self, ctx, data):
  94         introsvc = self.introducer_service
  95         ann = [(since,a)
  96                for (a,since) in introsvc.get_announcements().values()
  97                if a[1] != "stub_client"]
  98         ann.sort(lambda a,b: cmp( (a[1][1], a), (b[1][1], b) ) )
  99         return ann
 100
 101     def render_service_row(self, ctx, (since,announcement)):
 102         (furl, service_name, ri_name, nickname, ver, oldest) = announcement
 103         sr = SturdyRef(furl)
 104         nodeid = sr.tubID
 105         advertised = self.show_location_hints(sr)
 106         ctx.fillSlots("peerid", "%s %s" % (nodeid, nickname))
 107         ctx.fillSlots("advertised", " ".join(advertised))
 108         ctx.fillSlots("connected", "?")
 109         TIME_FORMAT = "%H:%M:%S %d-%b-%Y"
 110         ctx.fillSlots("announced",
 111                       time.strftime(TIME_FORMAT, time.localtime(since)))
 112         ctx.fillSlots("version", ver)
 113         ctx.fillSlots("service_name", service_name)
 114         return ctx.tag
 115
 116     def data_subscribers(self, ctx, data):
 117         # use the "stub_client" announcements to get information per nodeid
 118         clients = {}
 119         for (ann,when) in self.introducer_service.get_announcements().values():
 120             if ann[1] != "stub_client":
 121                 continue
 122             (furl, service_name, ri_name, nickname, ver, oldest) = ann
 123             sr = SturdyRef(furl)
 124             nodeid = sr.tubID
 125             clients[nodeid] = ann
 126
 127         # then we actually provide information per subscriber
 128         s = []
 129         introsvc = self.introducer_service
 130         for service_name, subscribers in introsvc.get_subscribers().items():
 131             for (rref, timestamp) in subscribers.items():
 132                 sr = rref.getSturdyRef()
 133                 nodeid = sr.tubID
 134                 ann = clients.get(nodeid)
 135                 s.append( (service_name, rref, timestamp, ann) )
 136         s.sort()
 137         return s
 138
 139     def render_subscriber_row(self, ctx, s):
 140         (service_name, rref, since, ann) = s
 141         nickname = "?"
 142         version = "?"
 143         if ann:
 144             (furl, service_name_2, ri_name, nickname, version, oldest) = ann
 145
 146         sr = rref.getSturdyRef()
 147         # if the subscriber didn't do Tub.setLocation, nodeid will be None
 148         nodeid = sr.tubID or "?"
 149         ctx.fillSlots("peerid", "%s %s" % (nodeid, nickname))
 150         advertised = self.show_location_hints(sr)
 151         ctx.fillSlots("advertised", " ".join(advertised))
 152         remote_host = rref.tracker.broker.transport.getPeer()
 153         if isinstance(remote_host, address.IPv4Address):
 154             remote_host_s = "%s:%d" % (remote_host.host, remote_host.port)
 155         else:
 156             # loopback is a non-IPv4Address
 157             remote_host_s = str(remote_host)
 158         ctx.fillSlots("connected", remote_host_s)
 159         TIME_FORMAT = "%H:%M:%S %d-%b-%Y"
 160         ctx.fillSlots("since",
 161                       time.strftime(TIME_FORMAT, time.localtime(since)))
 162         ctx.fillSlots("version", version)
 163         ctx.fillSlots("service_name", service_name)
 164         return ctx.tag
 165
 166     def show_location_hints(self, sr, ignore_localhost=True):
 167         advertised = []
 168         for hint in sr.locationHints:
 169             if isinstance(hint, str):
 170                 # Foolscap-0.2.5 and earlier used strings in .locationHints
 171                 if ignore_localhost and hint.startswith("127.0.0.1"):
 172                     continue
 173                 advertised.append(hint.split(":")[0])
 174             else:
 175                 # Foolscap-0.2.6 and later use tuples of ("ipv4", host, port)
 176                 if hint[0] == "ipv4":
 177                     host = hint[1]
 178                 if ignore_localhost and host == "127.0.0.1":
 179                     continue
 180                 advertised.append(hint[1])
 181         return advertised
 182
 183