Changeset 34bc05c

Timestamp:

Nov 24, 2008 11:11:52 AM (16 years ago)

Author:

Ted Faber <faber@…>

Branches:

axis_example, compt_changes, info-ops, master, version-1.30, version-2.00, version-3.01, version-3.02

Children:

d90f0fa

Parents:

bf0a80e

Message:

Add map database and clean up access reading method

File:

• fedd/fedd_experiment_control.py (modified) (7 diffs)

fedd/fedd_experiment_control.py

@@ -181 +181 @@
         self.exp_stem = "fed-stem"
         self.log = logging.getLogger("fedd.experiment_control")
+        set_log_level(config, "experiment_control", self.log)
         self.muxmax = 2
         self.nthreads = 2
@@ -190 +191 @@
         self.ssh_keygen = "/usr/bin/ssh-keygen"
         self.ssh_identity_file = None
+
 
         self.debug = config.getboolean("experiment_control", "create_debug")
@@ -208 +210 @@
         self.tclsh = "/usr/local/bin/otclsh"
         self.tcl_splitter = "/usr/testbed/lib/ns2ir/parse.tcl"
-        self.tbmap = { 
-                'deter':'https://users.isi.deterlab.net:23235',
-                'emulab':'https://users.isi.deterlab.net:23236',
-                'ucb':'https://users.isi.deterlab.net:23237',
-                }
+        mapdb_file = config.get("experiment_control", "mapdb")
         self.trace_file = sys.stderr
 
@@ -229 +227 @@
         self.def_gwtype = "pc";
 
+        if auth:
+            self.auth = auth
+        else:
+            self.log.error(\
+                    "[access]: No authorizer initialized, creating local one.")
+            auth = authorizer()
+
 
         if self.ssh_pubkey_file:
@@ -246 +251 @@
                     "No SSH public key file?")
 
-        set_log_level(config, "experiment_control", self.log)
-
-        if auth:
-            self.auth = auth
+
+        if mapdb_file:
+            self.read_mapdb(mapdb_file)
+            print self.tbmap
         else:
-            self.log.error(\
-                    "[access]: No authorizer initialized, creating local one.")
-            auth = authorizer()
+            self.log.warn("[experiment_control] No testbed map, using defaults")
+            self.tbmap = { 
+                    'deter':'https://users.isi.deterlab.net:23235',
+                    'emulab':'https://users.isi.deterlab.net:23236',
+                    'ucb':'https://users.isi.deterlab.net:23237',
+                    }
 
         if accessdb_file:
-            try:
-                self.accessdb = self.read_accessdb(accessdb_file)
-            except IOError:
-                raise service_error(service_error.internal,
-                        "Error opening %s as experiment control accessdb" % \
-                                accessdb_file)
-            for fid in self.accessdb.keys():
-                self.auth.set_attribute(fid, 'create')
+                self.read_accessdb(accessdb_file)
         else:
             raise service_error(service_error.internal,
@@ -391 +392 @@
 
     def read_accessdb(self, accessdb_file):
-        access = {}
+        """
+        Read the mapping from fedids that can create experiments to their name
+        in the 3-level access namespace.  All will be asserted from this
+        testbed and can include the local username and porject that will be
+        asserted on their behalf by this fedd.  Each fedid is also added to the
+        authorization system with the "create" attribute.
+        """
+        self.accessdb = {}
+        # These are the regexps for parsing the db
         name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+"
         project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \
@@ -399 +408 @@
         lineno = 0
 
-        f = open(accessdb_file, "r")
-        for line in f:
-            lineno += 1
-            line.strip()
-            if len(line) == 0 or line.startswith('#'):
-                continue
-            m = project_line.match(line)
-            if m:
-                fid = fedid(hexstr=m.group(1))
-                project, user = m.group(2,3)
-                if not access.has_key(fid):
-                    access[fid] = []
-                access[fid].append((project, user))
-                continue
-
-            m = user_line.match(line)
-            if m:
-                fid = fedid(hexstr=m.group(1))
-                project = None
-                user = m.group(2)
-                if not access.has_key(fid):
-                    access[fid] = []
-                access[fid].append((project, user))
-                continue
+        # Parse the mappings and store in self.authdb, a dict of 
+        # fedid -> (proj, user)
+        try:
+            f = open(accessdb_file, "r")
+            for line in f:
+                lineno += 1
+                line = line.strip()
+                if len(line) == 0 or line.startswith('#'):
+                    continue
+                m = project_line.match(line)
+                if m:
+                    fid = fedid(hexstr=m.group(1))
+                    project, user = m.group(2,3)
+                    if not self.accessdb.has_key(fid):
+                        self.accessdb[fid] = []
+                    self.accessdb[fid].append((project, user))
+                    continue
+
+                m = user_line.match(line)
+                if m:
+                    fid = fedid(hexstr=m.group(1))
+                    project = None
+                    user = m.group(2)
+                    if not self.accessdb.has_key(fid):
+                        self.accessdb[fid] = []
+                    self.accessdb[fid].append((project, user))
+                    continue
+                self.log.warn("[experiment_control] Error parsing access " +\
+                        "db %s at line %d" %  (accessdb_file, lineno))
+        except IOError:
             raise service_error(service_error.internal,
-                    "Error parsing access db %s at line %d" % \
-                        (accessdb_file, lineno))
+                    "Error opening/reading %s as experiment " +\
+                            "control accessdb" %  accessdb_file)
         f.close()
-        return access
-
+
+        # Initialize the authorization attributes
+        for fid in self.accessdb.keys():
+            self.auth.set_attribute(fid, 'create')
+
+    def read_mapdb(self, file):
+        """
+        Read a simple colon separated list of mappings for the
+        label-to-testbed-URL mappings.  Clears or creates self.tbmap.
+        """
+
+        self.tbmap = { }
+        lineno =0
+        try:
+            f = open(file, "r")
+            for line in f:
+                lineno += 1
+                line = line.strip()
+                if line.startswith('#') or len(line) == 0:
+                    continue
+                try:
+                    label, url = line.split(':', 1)
+                    self.tbmap[label] = url
+                except ValueError, e:
+                    self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\
+                            "map db: %s %s" % (lineno, line, e))
+        except IOError, e:
+            self.log.warning("[read_mapdb]: No saved map database: Can't " +\
+                    "open %s: %s" % (file, e))
+        f.close()
 
     def scp_file(self, file, user, host, dest=""):