diff options
Diffstat (limited to 'src/main/java/pl/edu/mimuw/cloudatlas/agent')
5 files changed, 146 insertions, 16 deletions
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/QurnikMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/QurnikMessage.java new file mode 100644 index 0000000..0161a37 --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/QurnikMessage.java @@ -0,0 +1,25 @@ +package pl.edu.mimuw.cloudatlas.agent.messages; + +import pl.edu.mimuw.cloudatlas.agent.modules.Module; +import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType; + +public abstract class QurnikMessage extends AgentMessage { + public enum Type { + RUN_QUERIES + } + + private Type type; + + public QurnikMessage(String messageId, long timestamp, Type type) { + super(messageId, ModuleType.QUERY, timestamp); + this.type = type; + } + + public Type getType() { + return type; + } + + public void callMe(Module module) throws InterruptedException, Module.InvalidMessageType { + module.handleTyped(this); + } +} diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/RunQueriesMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/RunQueriesMessage.java new file mode 100644 index 0000000..35f7819 --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/RunQueriesMessage.java @@ -0,0 +1,9 @@ +package pl.edu.mimuw.cloudatlas.agent.messages; + +import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType; + +public class RunQueriesMessage extends QurnikMessage { + public RunQueriesMessage(String messageId, long timestamp) { + super(messageId, timestamp, Type.RUN_QUERIES); + } +} diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java index d0bf083..ba5e1d1 100644 --- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java @@ -3,6 +3,7 @@ package pl.edu.mimuw.cloudatlas.agent.modules; import pl.edu.mimuw.cloudatlas.agent.Executor; import pl.edu.mimuw.cloudatlas.agent.messages.AgentMessage; import pl.edu.mimuw.cloudatlas.agent.messages.TimerSchedulerMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.QurnikMessage; import pl.edu.mimuw.cloudatlas.agent.messages.ResponseMessage; import pl.edu.mimuw.cloudatlas.agent.messages.RMIMessage; import pl.edu.mimuw.cloudatlas.agent.messages.StanikMessage; @@ -32,6 +33,10 @@ public abstract class Module { throw new InvalidMessageType("Got a TimerSchedulerMessage in module " + moduleType.toString()); } + public void handleTyped(QurnikMessage message) throws InterruptedException, InvalidMessageType { + throw new InvalidMessageType("Got a QurnikMessage in module " + moduleType.toString()); + } + public void handleTyped(RMIMessage message) throws InterruptedException, InvalidMessageType { throw new InvalidMessageType("Got an RMIMessage in module " + moduleType.toString()); } diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Qurnik.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Qurnik.java new file mode 100644 index 0000000..9b7268a --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Qurnik.java @@ -0,0 +1,105 @@ +package pl.edu.mimuw.cloudatlas.agent.modules; + +import java.util.List; +import java.util.LinkedList; +import java.util.Map.Entry; + +import pl.edu.mimuw.cloudatlas.agent.messages.GetStateMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.QurnikMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.ResponseMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.RunQueriesMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.StateMessage; +import pl.edu.mimuw.cloudatlas.agent.messages.UpdateAttributesMessage; +import pl.edu.mimuw.cloudatlas.interpreter.Interpreter; +import pl.edu.mimuw.cloudatlas.interpreter.InterpreterException; +import pl.edu.mimuw.cloudatlas.interpreter.QueryResult; +import pl.edu.mimuw.cloudatlas.model.Attribute; +import pl.edu.mimuw.cloudatlas.model.AttributesMap; +import pl.edu.mimuw.cloudatlas.model.AttributesUtil; +import pl.edu.mimuw.cloudatlas.model.PathName; +import pl.edu.mimuw.cloudatlas.model.TypePrimitive; +import pl.edu.mimuw.cloudatlas.model.Value; +import pl.edu.mimuw.cloudatlas.model.ValueQuery; +import pl.edu.mimuw.cloudatlas.model.ValueString; +import pl.edu.mimuw.cloudatlas.model.ValueTime; +import pl.edu.mimuw.cloudatlas.model.ValueUtils; +import pl.edu.mimuw.cloudatlas.model.ZMI; + +public class Qurnik extends Module { + public Qurnik() { + super(ModuleType.QUERY); + } + + @Override + public void handleTyped(QurnikMessage message) throws InterruptedException, InvalidMessageType { + switch (message.getType()) { + case RUN_QUERIES: + handleRunQueries((RunQueriesMessage) message); + break; + default: + throw new InvalidMessageType("This type of message cannot be handled by Qurnik"); + } + } + + @Override + public void handleTyped(ResponseMessage message) throws InterruptedException, InvalidMessageType { + switch (message.getType()) { + case STATE: + runQueriesOnState((StateMessage) message); + break; + default: + throw new InvalidMessageType("This type of message cannot be handled by Qurnik"); + } + } + + private void handleRunQueries(RunQueriesMessage message) throws InterruptedException { + GetStateMessage getStateMessage = new GetStateMessage("", 0, ModuleType.QUERY, 0); + sendMessage(getStateMessage); + } + + private void runQueriesOnState(StateMessage message) throws InterruptedException { + List<ValueQuery> queries = new LinkedList(); + for (Entry<ValueQuery, ValueTime> timestampedQuery : message.getQueries().values()) { + queries.add(timestampedQuery.getKey()); + } + executeAllQueries(message.getZMI(), queries, PathName.ROOT); + } + + private void executeAllQueries(ZMI zmi, List<ValueQuery> queries, PathName currentPath) throws InterruptedException { + if(!zmi.getSons().isEmpty()) { + for(ZMI son : zmi.getSons()) { + Value sonName = son.getAttributes().getOrNull("name"); + if (ValueUtils.valueNonNullOfType(sonName, TypePrimitive.STRING)) { + String sonNameString = ((ValueString) sonName).getValue(); + executeAllQueries(son, queries, currentPath.levelDown(sonNameString)); + } else { + System.out.println("ERROR: zone without a name attribute found while executing queries"); + } + } + + Interpreter interpreter = new Interpreter(zmi); + AttributesMap newAttributes = new AttributesMap(); + for (ValueQuery query : queries) { + try { + List<QueryResult> result = interpreter.interpretProgram(query.getQuery()); + for(QueryResult r : result) { + newAttributes.addOrChange(r.getName(), r.getValue()); + } + } catch(InterpreterException exception) { + System.out.println("ERROR: thrown while running interpreter: " + exception.getMessage()); + } + } + + if (!currentPath.toString().equals("/")) { + newAttributes.add("name", new ValueString(currentPath.getSingletonName())); + } + long currentTime = System.currentTimeMillis(); + newAttributes.add("timestamp", new ValueTime(currentTime)); + + AttributesUtil.transferAttributes(newAttributes, zmi.getAttributes()); + + UpdateAttributesMessage message = new UpdateAttributesMessage("", currentTime, currentPath.toString(), newAttributes); + sendMessage(message); + } + } +} diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java index e8721b3..4694219 100644 --- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java @@ -12,6 +12,7 @@ import pl.edu.mimuw.cloudatlas.agent.messages.UpdateAttributesMessage; import pl.edu.mimuw.cloudatlas.agent.messages.UpdateQueriesMessage; import pl.edu.mimuw.cloudatlas.model.Attribute; import pl.edu.mimuw.cloudatlas.model.AttributesMap; +import pl.edu.mimuw.cloudatlas.model.AttributesUtil; import pl.edu.mimuw.cloudatlas.model.PathName; import pl.edu.mimuw.cloudatlas.model.Type; import pl.edu.mimuw.cloudatlas.model.TypePrimitive; @@ -67,7 +68,7 @@ public class Stanik extends Module { ZMI zone = hierarchy.findDescendant(message.getPathName()); AttributesMap attributes = zone.getAttributes(); if (valueLower(attributes.get("timestamp"), message.getAttributes().get("timestamp"))) { - transferAttributes(message.getAttributes(), attributes); + AttributesUtil.transferAttributes(message.getAttributes(), attributes); } else { System.out.println("DEBUG: not applying update with older attributes"); } @@ -127,21 +128,6 @@ public class Stanik extends Module { return value != null && !value.isNull() && value.getType().isCompatible(type); } - private void transferAttributes(AttributesMap fromAttributes, AttributesMap toAttributes) { - Iterator<Entry<Attribute, Value>> iterator = toAttributes.iterator(); - while (iterator.hasNext()) { - Entry<Attribute, Value> entry = iterator.next(); - Attribute attribute = entry.getKey(); - Value newValue = fromAttributes.getOrNull(attribute); - if (newValue == null) { - iterator.remove(); - } - } - for (Entry<Attribute, Value> entry : fromAttributes) { - toAttributes.addOrChange(entry.getKey(), entry.getValue()); - } - } - private void addMissingZones(PathName path) { try { if (!hierarchy.descendantExists(path)) { |