src/allmydata/web/introweb.py

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