Implement path alias unpacking

lib/common.coffee

@@ -235,18 +235,22 @@ parseAlias = (pattern, start, res) ->
 
 parsePath = (pattern, start, res) ->
   path = []
+  path.wildcard = 0
+  path.alias = 0
   i = start ? 0
 
   # Colon separator is needed for parseAlias
   if i < pattern.length and pattern[i] != ':'
     while true
       if pattern[i] == '['
+        path.alias |= 1 << path.length
         i = parseAlias(pattern, i + 1, path) + 1
       else
         j = i
         while i < pattern.length and pattern[i] != ':' and pattern[i] != '.'
           ++ i
         n = pattern.slice(j, i)
+        path.wildcard |= 1 << path.length if n == '*'
         path.push(n)
 
       if i >= pattern.length or pattern[i] == ':'
@@ -256,6 +260,8 @@ parsePath = (pattern, start, res) ->
 
       ++ i
 
+  Object.freeze(path)
+
   if not res?
     return path
 
@@ -263,6 +269,22 @@ parsePath = (pattern, start, res) ->
   return i
 
 
+addPathMeta = (path) ->
+  path.alias = 0
+  path.wildcard = 0
+
+  for p, i in path
+    if typeOf(p) is ARRAY_TYPE
+      path.alias |= 1 << i
+      for j in [0...p.length] by 2
+        addPathMeta(p[j])
+    else if p == '*'
+      path.wildcard |= 1 << i
+
+  Object.freeze(path)
+  return path
+
+
 hammingWeight = (flags) ->
   flags -= ((flags >> 1) & 0x55555555)
   flags = (((flags >> 2) & 0x33333333) + (flags & 0x33333333))
@@ -283,4 +305,5 @@ exports.REGEXP_TYPE = REGEXP_TYPE
 exports.typeOf = typeOf
 exports.pathOverlap = pathOverlap
 exports.parsePath = parsePath
+exports.addPathMeta = addPathMeta
 exports.hammingWeight = hammingWeight

lib/cwmp.coffee

@@ -127,8 +127,9 @@ applyPresets = (currentRequest) ->
         return sendRpcRequest(currentRequest, id, rpcRequest)
 
       for k, v of parameters
-        if (vv = device.getAll(currentRequest.sessionData.deviceData, v)[0]?[8]?[0])
-          parameters[k] = vv
+        unpacked = device.unpack(currentRequest.sessionData.deviceData, v)
+        if unpacked[0] and (vv = deviceData.values.value.get(unpacked[0]))?
+          parameters[k] = vv[0]
 
       for p in presets
         if query.test(parameters, p.precondition)
@@ -272,8 +273,9 @@ listener = (httpRequest, httpResponse) ->
     return body
 
   stream.on('end', () ->
-    getSession(httpRequest, (sessionId, sessionData) ->
-      cwmpRequest = soap.request(httpRequest, session?.cwmpVersion)
+    cwmpRequest = null
+    getSession(httpRequest, f = (sessionId, sessionData) ->
+      cwmpRequest ?= soap.request(httpRequest, sessionData?.cwmpVersion)
       if not sessionData?
         if cwmpRequest.methodRequest?.type isnt 'Inform'
           httpResponse.writeHead(400)
@@ -281,8 +283,11 @@ listener = (httpRequest, httpResponse) ->
           return
 
         deviceId = common.generateDeviceId(cwmpRequest.methodRequest.deviceId)
-        sessionData = session.init(deviceId, cwmpRequest.cwmpVersion, cwmpRequest.sessionTimeout ? config.get('SESSION_TIMEOUT', deviceId))
+        return session.init(deviceId, cwmpRequest.cwmpVersion, cwmpRequest.sessionTimeout ? config.get('SESSION_TIMEOUT', deviceId), (err, sessionData) ->
+          throw err if err
           httpRequest.connection.setTimeout(sessionData.timeout * 1000)
+          f(null, sessionData)
+        )
 
       currentRequest = {
         httpRequest : httpRequest,

lib/db.coffee

@@ -452,7 +452,7 @@ saveDevice = (deviceId, deviceData, isNew, callback) ->
   # Set object's children timestamps
   iter = deviceData.timestamps.exist.diff()
   while not (diff = iter.next()).done
-    continue if diff.value[0].wildcards != (1 << (diff.value[0].length - 1))
+    continue if diff.value[0].wildcard != (1 << (diff.value[0].length - 1))
     continue if diff.value[0][0] in ['Events', 'DeviceID', 'Tags']
 
     if not diff.value[2]? and diff.value[1]?

lib/device.js

@@ -61,12 +61,6 @@ function sanitizeParameterValue(parameterValue) {
 }
 
 
-function getAliasDeclarations(path) {
-  // TODO Return declarations necessary for unpacking aliases
-  return [];
-}
-
-
 function inferTimestamps(deviceData, path) {
   var res = {};
 
@@ -79,14 +73,14 @@ function inferTimestamps(deviceData, path) {
   }
 
   for (let i = path.length - 1; i > 0; -- i) {
-    if (path.wildcards & ((2 << i) - 1) === 0)
+    if (path.wildcard & ((2 << i) - 1) === 0)
       break;
 
     let param = null;
     let ancestor = path.slice(0, i);
     let ancestorTimestamp = 0;
     for (let sup of deviceData.paths.superset(ancestor)) {
-      if (!sup.wildcards)
+      if (!sup.wildcard)
         param = sup;
 
       let t = deviceData.timestamps.exist.get(sup);
@@ -108,7 +102,7 @@ function inferTimestamps(deviceData, path) {
         newt[attrName] = ancestorTimestamp;
 
       for (let sub of deviceData.paths.subset(ancestor)) {
-        if (sub.wildcards)
+        if (sub.wildcard)
           continue;
         let subt = inferTimestamps(deviceData, sub.concat(path.slice(sub.length, path.length)));
         for (let attrName in newt) {
@@ -128,9 +122,84 @@ function inferTimestamps(deviceData, path) {
 }
 
 
+function getAliasDeclarations(path, timestamp) {
+  var decs = [];
+
+  function recursive(pattern, prefix) {
+    var pattern = prefix.concat(pattern);
+
+    for (let i = prefix.length; i < pattern.length; ++ i) {
+      if (Array.isArray(pattern[i])) {
+        let pat = pattern[i];
+        pattern[i] = '*';
+        for (let j = 0; j < pat.length; j += 2)
+          recursive(pat[j], pattern.slice(0, i + 1));
+      }
+    }
+
+    if (prefix.length)
+      decs.push([pattern, {exist: timestamp, value: timestamp}]);
+    else
+      decs.push([pattern, {exist: timestamp}]);
+  }
+
+  recursive(path, []);
+
+  return decs;
+}
+
+
 function unpack(deviceData, path, revision) {
-  // TODO implement alias unpacking
-  return [path];
+  let allMatches = [];
+  if (path.alias == 0) {
+    for (let p of deviceData.paths.subset(path, 0))
+      if (deviceData.values.exist.get(p, revision))
+        allMatches.push(p);
+    return allMatches;
+  }
+
+  let wildcardPath = path.slice();
+  wildcardPath.wildcard = path.wildcard;
+  for (let i = 0; i < wildcardPath.length; ++ i)
+    if (Array.isArray(wildcardPath[i])) {
+      wildcardPath[i] = '*';
+      wildcardPath.wildcard |= 1 << i;
+    }
+
+  for (let p of deviceData.paths.subset(wildcardPath, 0))
+    if (deviceData.values.exist.get(p, revision))
+      allMatches.push(p);
+
+  for (let i = path.length - 1; i >= 0; -- i) {
+    if (Array.isArray(path[i])) {
+      for (let j = 0; j < path[i].length; j += 2) {
+        let p = wildcardPath.slice(0, i + 1).concat(path[i][j]);
+        p.alias = (wildcardPath.alias & ((1 << (i + 1)) - 1)) + path[i][j].alias << (i + 1);
+        p.wildcard = (wildcardPath.wildcard & ((1 << (i + 1)) - 1)) + path[i][j].wildcard << (i + 1);
+        let unpacked = unpack(deviceData, p, revision);
+        let filtered = [];
+        for (let up of unpacked) {
+          let v = deviceData.values.value.get(up, revision);
+          if (v && sanitizeParameterValue([path[i][j + 1], v[1]])[0] == v[0]) {
+            for (let m = 0; m < allMatches.length; ++ m) {
+              let k;
+              for (k = i; k >= 0; -- k)
+                if (allMatches[m][k] != up[k])
+                  break
+
+              if (k < 0) {
+                filtered.push(allMatches[m]);
+                allMatches[m] = [];
+              }
+            }
+          }
+        }
+        allMatches = filtered;
+      }
+    }
+  }
+
+  return allMatches;
 }
 
 
@@ -176,7 +245,7 @@ function set(deviceData, path, timestamps, values) {
   // TODO Allow overwriting attribute value with same timestamp
   path = deviceData.paths.add(path);
 
-  if (!path.wildcards) {
+  if (!path.wildcard) {
     normalizeAttributes(timestamps, values);
     if (values.exist && path.length > 1)
       set(deviceData, path.slice(0, path.length - 1),
@@ -187,7 +256,7 @@ function set(deviceData, path, timestamps, values) {
   var current = inferTimestamps(deviceData, path);
 
   for (let c in current)
-    if (current[c] > timestamps[c] || (current[c] == timestamps[c] && path.wildcards > 0))//!deviceData.values[c].has(path)))
+    if (current[c] > timestamps[c] || (current[c] == timestamps[c] && path.wildcard > 0))
       delete timestamps[c];
 
   if (timestamps.exist != null) {
@@ -199,19 +268,19 @@ function set(deviceData, path, timestamps, values) {
   current = inferTimestamps(deviceData, path);
 
   for (let c in current)
-    if (current[c] > timestamps[c] || (current[c] == timestamps[c] && path.wildcards > 0))//!deviceData.values[c].has(path)))
+    if (current[c] > timestamps[c] || (current[c] == timestamps[c] && path.wildcard > 0))
       delete timestamps[c];
 
   let toInvalidate = new Map();
 
   for (let sub of deviceData.paths.subset(path, 0)) {
-    if (path.wildcards == sub.wildcards)
+    if (path.wildcard == sub.wildcard)
       continue;
 
     for (let attrName in timestamps) {
       if (deviceData.timestamps[attrName].get(sub) <= timestamps[attrName]) {
 
-        if (sub.wildcards || !deviceData.values[attrName].has(sub))
+        if (sub.wildcard || !deviceData.values[attrName].has(sub))
           deviceData.timestamps[attrName].delete(sub);
         else if (deviceData.timestamps[attrName].get(sub) < timestamps[attrName]) {
           deviceData.timestamps[attrName].delete(sub);
@@ -263,7 +332,7 @@ function set(deviceData, path, timestamps, values) {
   //   depth = 99;
   //
   // for (let sup of deviceData.paths.superset(path, depth)) {
-  //   if ((sup.wildcards && (3 << path.length) - 1) != path.wildcards) {
+  //   if ((sup.wildcard && (3 << path.length) - 1) != path.wildcard) {
   //     throw new Error('Not implemented');
   //   }
   // }

lib/path-set.js

@@ -79,18 +79,19 @@ class PathSet {
       }
     }
 
-    var wildcards = 0;
+    var wildcard = 0;
     this.lengthIndex[path.length].add(path);
     for (let i = 0; i < path.length; ++ i) {
       let fragment = path[i];
       if (fragment === '*')
-        wildcards |= 1 << i;
+        wildcard |= 1 << i;
 
       this.fragmentIndex[i][fragment].add(path);
     }
 
-    if (path.wildcards == null) {
-      path.wildcards = wildcards;
+    if (path.wildcard == null) {
+      path.alias = 0;
+      path.wildcard = wildcard;
       Object.freeze(path);
     }
     return path;

lib/sandbox.coffee

@@ -83,23 +83,24 @@ sandbox.context.declare = (decs) ->
   res = {}
   for k, v of decs
     path = common.parsePath(k)
+    single = true
+    for p in path
+      if p == '*' or common.typeOf(p) isnt common.STRING_TYPE
+        single = false
+        break
 
-    res[k] = {}
     unpacked = device.unpack(sandbox.deviceData, path, sandbox.revision)
-    for path in unpacked
-      iter = sandbox.deviceData.paths.subset(path)
-      while (param = iter.next().value)?
-        if param.wildcards == 0 and sandbox.deviceData.values.exist.get(param, sandbox.revision)
+    for param in unpacked
       r = {}
       for attrName, dec of v
         if (attrValue = sandbox.deviceData.values[attrName].get(param, sandbox.revision))?
           r[attrName] = [sandbox.deviceData.timestamps[attrName].get(param, sandbox.revision), attrValue]
 
-          p = param.join('.')
-          if p == k
+      if single
         res[k] = r
       else
-            res[k][p] = r
+        res[k] ?= {}
+        res[k][param.join('.')] = r
 
   return res