Ejemplo n.º 1
0
    @SuppressWarnings({"UnusedDeclaration"})
    @PUT
    @Path("{pId}/{tId}/volatile-participant")
    public Response synchronizations(
        @PathParam("pId") @DefaultValue("") String pId,
        @PathParam("tId") @DefaultValue("") String tId,
        String content) {
      Work work = faults.get(pId);
      TxStatus txStatus;
      int vStatus;

      if (work == null) return Response.ok().build();

      txStatus = content != null ? TxStatus.fromStatus(content) : TxStatus.TransactionStatusUnknown;

      vStatus = txStatus.equals(TxStatus.TransactionStatusUnknown) ? 1 : 2;

      if (vStatus == 2 && work.vStatus == 0) {
        // afterCompletion but coordinator never called beforeCompletion
        return Response.status(HttpURLConnection.HTTP_BAD_REQUEST).build();
      }

      work.vStatus = vStatus;
      work.syncCount += 1;

      if (vStatus == 1 && "V_PREPARE".equals(work.fault))
        return Response.status(HttpURLConnection.HTTP_CONFLICT).build();
      else if (vStatus == 2 && "V_COMMIT".equals(work.fault))
        return Response.status(HttpURLConnection.HTTP_CONFLICT).build();

      return Response.ok().build();
    }
Ejemplo n.º 2
0
 @PUT
 @Path("{pId}/{tId}/commit-one-phase")
 public Response commmitOnePhase(
     @PathParam("pId") @DefaultValue("") String pId,
     @PathParam("tId") @DefaultValue("") String tId,
     String content) {
   Work work = faults.get(pId);
   if (work != null) work.commmitOnePhaseCnt += 1;
   return terminate(pId, tId, TxStatusMediaType.TX_COMMITTED_ONE_PHASE);
 }
Ejemplo n.º 3
0
 @PUT
 @Path("{pId}/{tId}/rollback")
 public Response rollback(
     @PathParam("pId") @DefaultValue("") String pId,
     @PathParam("tId") @DefaultValue("") String tId,
     String content) {
   Work work = faults.get(pId);
   if (work != null) work.rollbackCnt += 1;
   return terminate(pId, tId, TxStatusMediaType.TX_ROLLEDBACK);
 }
Ejemplo n.º 4
0
 @PUT
 @Path("{pId}/{tId}/prepare")
 public Response prepare(
     @PathParam("pId") @DefaultValue("") String pId,
     @PathParam("tId") @DefaultValue("") String tId,
     String content) {
   Work work = faults.get(pId);
   if (work != null) work.prepareCnt += 1;
   return terminate(pId, tId, TxStatusMediaType.TX_PREPARED);
 }
Ejemplo n.º 5
0
    @SuppressWarnings({"UnusedDeclaration"})
    @PUT
    @Path("{pId}/{tId}/terminator")
    public Response terminate(
        @PathParam("pId") @DefaultValue("") String pId,
        @PathParam("tId") @DefaultValue("") String tId,
        String content) {
      TxStatus status = TxSupport.toTxStatus(content);

      // String status = TxSupport.getStatus(content);
      Work work = faults.get(pId);

      if (work == null) return Response.status(HttpURLConnection.HTTP_NOT_FOUND).build();

      String fault = work.fault;

      if (status.isPrepare()) {
        if ("READONLY".equals(fault)) {
          //                    faults.remove(pId);
          work.status = TxStatus.TransactionReadOnly.name();
        } else if ("PREPARE_FAIL".equals(fault)) {
          //                    faults.remove(pId);
          return Response.status(HttpURLConnection.HTTP_CONFLICT).build();
          // throw new WebApplicationException(HttpURLConnection.HTTP_CONFLICT);
        } else {
          if ("PDELAY".equals(fault)) {
            try {
              Thread.sleep(2000);
            } catch (InterruptedException e) {
            }
          }
          work.status = TxStatus.TransactionPrepared.name();
        }
      } else if (status.isCommit() || status.isCommitOnePhase()) {
        if ("H_HAZARD".equals(fault)) work.status = TxStatus.TransactionHeuristicHazard.name();
        else if ("H_ROLLBACK".equals(fault))
          work.status = TxStatus.TransactionHeuristicRollback.name();
        else if ("H_MIXED".equals(fault)) work.status = TxStatus.TransactionHeuristicMixed.name();
        else {
          if ("CDELAY".equals(fault)) {
            try {
              Thread.sleep(3000);
            } catch (InterruptedException e) {
              // ok
            }
          }
          work.status =
              status.isCommitOnePhase()
                  ? TxStatus.TransactionCommittedOnePhase.name()
                  : TxStatus.TransactionCommitted.name();

          work.end(true);
        }
      } else if (status.isAbort()) {
        if ("H_HAZARD".equals(fault)) work.status = TxStatus.TransactionHeuristicHazard.name();
        else if ("H_COMMIT".equals(fault)) work.status = TxStatus.TransactionHeuristicCommit.name();
        else if ("H_MIXED".equals(fault)) work.status = TxStatus.TransactionHeuristicMixed.name();
        else {
          if ("ADELAY".equals(fault)) {
            try {
              Thread.sleep(2000);
            } catch (InterruptedException e) {
              // ok
            }
          }
          work.status = TxStatus.TransactionRolledBack.name();
          work.end(false);
          //                    faults.remove(pId);
        }
      } else {
        return Response.status(HttpURLConnection.HTTP_BAD_REQUEST).build();
        // throw new WebApplicationException(HttpURLConnection.HTTP_BAD_REQUEST);
      }

      // return TxSupport.toStatusContent(work.status);
      return Response.ok(TxSupport.toStatusContent(work.status)).build();
    }
Ejemplo n.º 6
0
    @POST
    @Produces(TxMediaType.PLAIN_MEDIA_TYPE)
    public String enlist(
        @Context UriInfo info,
        @QueryParam("pId") @DefaultValue("") String pId,
        @QueryParam("fault") @DefaultValue("") String fault,
        @QueryParam("twoPhaseAware") @DefaultValue("true") String twoPhaseAware,
        @QueryParam("isVolatile") @DefaultValue("false") String isVolatile,
        String enlistUrl)
        throws IOException {
      Work work = faults.get(pId);
      TxSupport txn = new TxSupport();
      String txId = enlistUrl.substring(enlistUrl.lastIndexOf('/') + 1);
      boolean isTwoPhaseAware = "true".equals(twoPhaseAware);
      boolean isVolatileParticipant = "true".equals(isVolatile);
      String vRegistration = null; // URI for registering with the volatile phase
      String vParticipantLink = null; // URI for handling pre and post 2PC phases
      String path = TxSupport.extractUri(info);

      if (work == null) {
        int id = ++pid;

        work =
            makeWork(
                txn,
                path,
                String.valueOf(id),
                txId,
                enlistUrl,
                isTwoPhaseAware,
                isVolatileParticipant,
                null,
                fault);
      } else {
        Work newWork =
            makeWork(
                txn,
                path,
                work.id,
                txId,
                enlistUrl,
                isTwoPhaseAware,
                isVolatileParticipant,
                null,
                fault);
        newWork.oldState = work.oldState;
        newWork.newState = work.newState;
        work = newWork;
      }

      if (enlistUrl.indexOf(',') != -1) {
        String[] urls = enlistUrl.split(",");

        if (urls.length < 2) throw new WebApplicationException(HttpURLConnection.HTTP_BAD_REQUEST);

        enlistUrl = urls[0];
        vRegistration = urls[1];

        String vParticipant =
            new StringBuilder(path)
                .append('/')
                .append(work.id)
                .append('/')
                .append(txId)
                .append('/')
                .append("vp")
                .toString();
        vParticipantLink =
            txn.addLink2(new StringBuilder(), TxLinkNames.VOLATILE_PARTICIPANT, vParticipant, true)
                .toString();
      }

      try {
        // enlist TestResource in the transaction as a participant
        work.recoveryUrl = txn.enlistParticipant(enlistUrl, work.pLinks);

        if (vParticipantLink != null)
          txn.enlistVolatileParticipant(vRegistration, vParticipantLink);
      } catch (HttpResponseException e) {
        throw new WebApplicationException(e.getActualResponse());
      }

      work.status = TxStatus.TransactionActive.name();
      work.start();

      faults.put(work.id, work);

      return work.id;
    }
Ejemplo n.º 7
0
    @SuppressWarnings({"UnusedDeclaration"})
    @GET
    public String getBasic(
        @Context UriInfo info,
        @QueryParam("pId") @DefaultValue("") String pId,
        @QueryParam("context") @DefaultValue("") String ctx,
        @QueryParam("name") @DefaultValue("") String name,
        @QueryParam("value") @DefaultValue("") String value,
        @QueryParam("query") @DefaultValue("pUrl") String query,
        @QueryParam("arg") @DefaultValue("") String arg,
        @QueryParam("twoPhaseAware") @DefaultValue("true") String twoPhaseAware,
        @QueryParam("isVolatile") @DefaultValue("false") String isVolatileParticipant,
        @QueryParam("register") @DefaultValue("true") String register) {
      Work work = faults.get(pId);
      String res = null;
      boolean isVolatile = "true".equals(isVolatileParticipant);
      boolean isTwoPhaseAware = "true".equals(twoPhaseAware);

      if (name.length() != 0) {
        if (value.length() != 0) {
          if (work == null) {
            work =
                makeWork(
                    new TxSupport(),
                    TxSupport.extractUri(info),
                    String.valueOf(++pid),
                    null,
                    null,
                    isTwoPhaseAware,
                    isVolatile,
                    null,
                    null);
            work.oldState.put(name, value);
            faults.put(work.id, work);
            return work.id;
          }

          work.newState.put(name, value);
        }

        if (work != null) {
          if ("syncCount".equals(name)) res = String.valueOf(work.syncCount);
          else if ("commitCnt".equals(name)) res = String.valueOf(work.commitCnt);
          else if ("prepareCnt".equals(name)) res = String.valueOf(work.prepareCnt);
          else if ("rollbackCnt".equals(name)) res = String.valueOf(work.rollbackCnt);
          else if ("commmitOnePhaseCnt".equals(name)) res = String.valueOf(work.commmitOnePhaseCnt);
          else if (work.inTxn()) res = work.newState.get(name);
          else res = work.oldState.get(name);
        }
      }

      if (work == null) throw new WebApplicationException(HttpURLConnection.HTTP_NOT_FOUND);

      if ("move".equals(query))
        res = moveParticipant(work, arg, register, isTwoPhaseAware, isVolatile);
      else if ("recoveryUrl".equals(query)) res = work.recoveryUrl;
      else if ("status".equals(query)) res = work.status;
      else if (res == null) res = work.pLinks;

      return res; // null will generate a 204 status code (no content)
    }