#ifndef TRANSACTION_H
#define TRANSACTION_H
#include "common.h"
+#include "Pair.h"
class Transaction {
private:
- Hashtable<int32_t, TransactionPart *> parts = NULL;
- Set<int32_t> missingParts = NULL;
- Vector<int32_t> partsPendingSend = NULL;
- bool isComplete = false;
- bool hasLastPart = false;
- Hashset<KeyValue *> *keyValueGuardSet = NULL;
- Hashset<KeyValue *> *keyValueUpdateSet = NULL;
- bool isDead = false;
- int64_t sequenceNumber = -1;
- int64_t clientLocalSequenceNumber = -1;
- int64_t arbitratorId = -1;
- int64_t machineId = -1;
- Pair<uint64_t, uint64_t> transactionId = NULL;
-
- int nextPartToSend = 0;
- bool didSendAPartToServer = false;
-
- TransactionStatus transactionStatus = NULL;
-
- bool hadServerFailure = false;
-
- public Transaction() {
- parts = new Hashtable<int32_t, TransactionPart>();
- keyValueGuardSet = new HashSet<KeyValue>();
- keyValueUpdateSet = new HashSet<KeyValue>();
- partsPendingSend = new Vector<int32_t>();
- }
-
- public void addPartEncode(TransactionPart newPart) {
- parts.put(newPart.getPartNumber(), newPart);
- partsPendingSend.add(newPart.getPartNumber());
-
- sequenceNumber = newPart.getSequenceNumber();
- arbitratorId = newPart.getArbitratorId();
- transactionId = newPart.getTransactionId();
- clientLocalSequenceNumber = newPart.getClientLocalSequenceNumber();
- machineId = newPart.getMachineId();
-
- isComplete = true;
- }
-
- public void addPartDecode(TransactionPart newPart) {
-
- if (isDead) {
- // If dead then just kill this part and move on
- newPart.setDead();
- return;
- }
-
- sequenceNumber = newPart.getSequenceNumber();
- arbitratorId = newPart.getArbitratorId();
- transactionId = newPart.getTransactionId();
- clientLocalSequenceNumber = newPart.getClientLocalSequenceNumber();
- machineId = newPart.getMachineId();
-
- TransactionPart previoslySeenPart = parts.put(newPart.getPartNumber(), newPart);
-
- if (previoslySeenPart != NULL) {
- // Set dead the old one since the new one is a rescued version of this part
- previoslySeenPart.setDead();
- } else if (newPart.isLastPart()) {
- missingParts = new HashSet<int32_t>();
- hasLastPart = true;
-
- for (int i = 0; i < newPart.getPartNumber(); i++) {
- if (parts.get(i) == NULL) {
- missingParts.add(i);
- }
- }
- }
-
- if (!isComplete && hasLastPart) {
-
- // We have seen this part so remove it from the set of missing parts
- missingParts.remove(newPart.getPartNumber());
-
- // Check if all the parts have been seen
- if (missingParts.size() == 0) {
-
- // We have all the parts
- isComplete = true;
-
- // Decode all the parts and create the key value guard and update sets
- decodeTransactionData();
- }
- }
- }
-
- public void addUpdateKV(KeyValue kv) {
- keyValueUpdateSet.add(kv);
- }
-
- public void addGuardKV(KeyValue kv) {
- keyValueGuardSet.add(kv);
- }
-
-
- public int64_t getSequenceNumber() {
- return sequenceNumber;
- }
-
- public void setSequenceNumber(int64_t _sequenceNumber) {
- sequenceNumber = _sequenceNumber;
-
- for (int32_t i : parts.keySet()) {
- parts.get(i).setSequenceNumber(sequenceNumber);
- }
- }
-
- public int64_t getClientLocalSequenceNumber() {
- return clientLocalSequenceNumber;
- }
-
- public Hashtable<int32_t, TransactionPart> getParts() {
- return parts;
- }
-
- public bool didSendAPartToServer() {
- return didSendAPartToServer;
- }
-
- public void resetNextPartToSend() {
- nextPartToSend = 0;
- }
-
- public TransactionPart getNextPartToSend() {
- if ((partsPendingSend.size() == 0) || (partsPendingSend.size() == nextPartToSend)) {
- return NULL;
- }
- TransactionPart part = parts.get(partsPendingSend.get(nextPartToSend));
- nextPartToSend++;
- return part;
- }
-
-
- public void setServerFailure() {
- hadServerFailure = true;
- }
-
- public bool getServerFailure() {
- return hadServerFailure;
- }
-
-
- public void resetServerFailure() {
- hadServerFailure = false;
- }
-
-
- public void setTransactionStatus(TransactionStatus _transactionStatus) {
- transactionStatus = _transactionStatus;
- }
-
- public TransactionStatus getTransactionStatus() {
- return transactionStatus;
- }
-
- public void removeSentParts(Vector<int32_t> sentParts) {
- nextPartToSend = 0;
- if (partsPendingSend.removeAll(sentParts))
- {
- didSendAPartToServer = true;
- transactionStatus.setTransactionSequenceNumber(sequenceNumber);
- }
- }
-
- public bool didSendAllParts() {
- return partsPendingSend.isEmpty();
- }
-
- public Set<KeyValue> getKeyValueUpdateSet() {
- return keyValueUpdateSet;
- }
-
- public int getNumberOfParts() {
- return parts.size();
- }
-
- public int64_t getMachineId() {
- return machineId;
- }
-
- public int64_t getArbitrator() {
- return arbitratorId;
- }
-
- public bool isComplete() {
- return isComplete;
- }
-
- public Pair<int64_t, int64_t> getId() {
- return transactionId;
- }
-
- public void setDead() {
- if (isDead) {
- // Already dead
- return;
- }
-
- // Set dead
- isDead = true;
-
- // Make all the parts of this transaction dead
- for (int32_t partNumber : parts.keySet()) {
- TransactionPart part = parts.get(partNumber);
- part.setDead();
- }
- }
-
- public TransactionPart getPart(int index) {
- return parts.get(index);
- }
-
- private void decodeTransactionData() {
-
- // Calculate the size of the data section
- int dataSize = 0;
- for (int i = 0; i < parts.keySet().size(); i++) {
- TransactionPart tp = parts.get(i);
- dataSize += tp.getDataSize();
- }
-
- Array<char> *combinedData = new char[dataSize];
- int currentPosition = 0;
-
- // Stitch all the data sections together
- for (int i = 0; i < parts.keySet().size(); i++) {
- TransactionPart tp = parts.get(i);
- System.arraycopy(tp.getData(), 0, combinedData, currentPosition, tp.getDataSize());
- currentPosition += tp.getDataSize();
- }
-
- // Decoder Object
- ByteBuffer bbDecode = ByteBuffer.wrap(combinedData);
-
- // Decode how many key value pairs need to be decoded
- int numberOfKVGuards = bbDecode.getInt();
- int numberOfKVUpdates = bbDecode.getInt();
-
- // Decode all the guard key values
- for (int i = 0; i < numberOfKVGuards; i++) {
- KeyValue kv = (KeyValue)KeyValue.decode(bbDecode);
- keyValueGuardSet.add(kv);
- }
-
- // Decode all the updates key values
- for (int i = 0; i < numberOfKVUpdates; i++) {
- KeyValue kv = (KeyValue)KeyValue.decode(bbDecode);
- keyValueUpdateSet.add(kv);
- }
- }
-
- public bool evaluateGuard(Hashtable<IoTString, KeyValue> committedKeyValueTable, Hashtable<IoTString, KeyValue> speculatedKeyValueTable, Hashtable<IoTString, KeyValue> pendingTransactionSpeculatedKeyValueTable) {
- for (KeyValue kvGuard : keyValueGuardSet) {
-
- // First check if the key is in the speculative table, this is the value of the latest assumption
- KeyValue kv = NULL;
-
- // If we have a speculation table then use it first
- if (pendingTransactionSpeculatedKeyValueTable != NULL) {
- kv = pendingTransactionSpeculatedKeyValueTable.get(kvGuard.getKey());
- }
-
- // If we have a speculation table then use it first
- if ((kv == NULL) && (speculatedKeyValueTable != NULL)) {
- kv = speculatedKeyValueTable.get(kvGuard.getKey());
- }
-
- if (kv == NULL) {
- // if it is not in the speculative table then check the committed table and use that
- // value as our latest assumption
- kv = committedKeyValueTable.get(kvGuard.getKey());
- }
-
- if (kvGuard.getValue() != NULL) {
- if ((kv == NULL) || (!kvGuard.getValue().equals(kv.getValue()))) {
-
-
- if (kv != NULL) {
- System.out.println(kvGuard.getValue() + " " + kv.getValue());
- } else {
- System.out.println(kvGuard.getValue() + " " + kv);
- }
-
- return false;
- }
- } else {
- if (kv != NULL) {
- return false;
- }
- }
- }
- return true;
- }
+ Hashtable<int32_t, TransactionPart *> *parts;
+ Hashset<int32_t> *missingParts;
+ Vector<int32_t> *partsPendingSend;
+ bool fldisComplete;
+ bool hasLastPart;
+ Hashset<KeyValue *> *keyValueGuardSet;
+ Hashset<KeyValue *> *keyValueUpdateSet;
+ bool isDead;
+ int64_t sequenceNumber;
+ int64_t clientLocalSequenceNumber;
+ int64_t arbitratorId;
+ int64_t machineId;
+ Pair<int64_t, int64_t> *transactionId;
+ int nextPartToSend;
+ bool flddidSendAPartToServer;
+ TransactionStatus *transactionStatus;
+ bool hadServerFailure;
+ void decodeTransactionData();
+
+public:
+ Transaction();
+ void addPartEncode(TransactionPart *newPart);
+ void addPartDecode(TransactionPart *newPart);
+ void addUpdateKV(KeyValue *kv);
+ void addGuardKV(KeyValue *kv);
+ int64_t getSequenceNumber();
+ void setSequenceNumber(int64_t _sequenceNumber);
+ int64_t getClientLocalSequenceNumber();
+ Hashtable<int32_t, TransactionPart *> *getParts();
+ bool didSendAPartToServer();
+ void resetNextPartToSend();
+ TransactionPart *getNextPartToSend();
+ void setServerFailure();
+ bool getServerFailure();
+ void resetServerFailure();
+ void setTransactionStatus(TransactionStatus *_transactionStatus);
+ TransactionStatus *getTransactionStatus();
+ void removeSentParts(Vector<int32_t> *sentParts);
+ bool didSendAllParts();
+ Hashset<KeyValue *> *getKeyValueUpdateSet();
+ int getNumberOfParts();
+ int64_t getMachineId();
+ int64_t getArbitrator();
+ bool isComplete();
+ Pair<int64_t, int64_t> *getId();
+ void setDead();
+ TransactionPart *getPart(int32_t index);
+ bool evaluateGuard(Hashtable<IoTString *, KeyValue *> *committedKeyValueTable, Hashtable<IoTString *, KeyValue *> *speculatedKeyValueTable, Hashtable<IoTString *, KeyValue *> *pendingTransactionSpeculatedKeyValueTable);
};
#endif
projects / iotcloud.git / blobdiff