@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();
}
@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);
}
@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);
}
@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);
}
@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();
}
@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;
}
@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)
}
