/****************************************************************************
* Name : cpsv_test_sync_app_process
*
* Description : This is the function which is given as the input to the
* Application task.
*
* Arguments : info - This is the information which is passed during
* spawing Application task.
*
* Return Values : None.
*
* Notes : None.
*****************************************************************************/
void cpsv_test_sync_app_process(void *info)
{
SaCkptHandleT ckptHandle;
SaCkptCheckpointHandleT checkpointHandle;
SaCkptCallbacksT callbk;
SaVersionT version;
SaNameT ckptName;
SaAisErrorT rc;
SaCkptCheckpointCreationAttributesT ckptCreateAttr;
SaCkptCheckpointOpenFlagsT ckptOpenFlags;
SaCkptSectionCreationAttributesT sectionCreationAttributes;
SaCkptIOVectorElementT writeVector, readVector;
SaUint32T erroneousVectorIndex;
void *initialData = "Default data in the section";
unsigned char read_buff[100] = {0};
SaTimeT timeout = 1000000000;
unsigned int temp_var = (unsigned int)(long)info;
memset(&ckptName, 0, 255);
ckptName.length = strlen(DEMO_CKPT_NAME);
memcpy(ckptName.value,DEMO_CKPT_NAME,strlen(DEMO_CKPT_NAME));
callbk.saCkptCheckpointOpenCallback = AppCkptOpenCallback;
callbk.saCkptCheckpointSynchronizeCallback = AppCkptSyncCallback;
version.releaseCode= 'B';
version.majorVersion = 2;
version.minorVersion = 2;
printf("*******************************************************************\n");
printf("Demonstrating Checkpoint Service Usage with a collocated Checkpoint \n");
printf("*******************************************************************\n");
sleep(2);
printf("Initialising With Checkpoint Service....\n");
rc = saCkptInitialize(&ckptHandle,&callbk,&version);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
ckptCreateAttr.creationFlags = SA_CKPT_CHECKPOINT_COLLOCATED|SA_CKPT_WR_ACTIVE_REPLICA;
ckptCreateAttr.checkpointSize = 1024;
ckptCreateAttr.retentionDuration= 100000;
ckptCreateAttr.maxSections= 2;
ckptCreateAttr.maxSectionSize = 700;
ckptCreateAttr.maxSectionIdSize = 4;
ckptOpenFlags = SA_CKPT_CHECKPOINT_CREATE|SA_CKPT_CHECKPOINT_READ|SA_CKPT_CHECKPOINT_WRITE;
printf("Opening Collocated Checkpoint = %s with create flags....\n",ckptName.value);
rc = saCkptCheckpointOpen(ckptHandle,&ckptName,&ckptCreateAttr,ckptOpenFlags,timeout,&checkpointHandle);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
if(temp_var == 1)
{
printf("Setting the Active Replica for my checkpoint ....\t");
rc = saCkptActiveReplicaSet(checkpointHandle);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
sectionCreationAttributes.sectionId = (SaCkptSectionIdT*) malloc(sizeof \
(SaCkptSectionIdT));
sectionCreationAttributes.sectionId->id = (unsigned char *)"11";
sectionCreationAttributes.sectionId->idLen = 2;
sectionCreationAttributes.expirationTime = 3600000000000ll; /* One Hour */
printf("Created Section ....\t");
rc = saCkptSectionCreate(checkpointHandle,§ionCreationAttributes,initialData,28);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
writeVector.sectionId.id = (unsigned char *)"11";
writeVector.sectionId.idLen = 2;
writeVector.dataBuffer = "The Checkpoint Service provides a facility for processes to store checkpoint data";
writeVector.dataSize = strlen(writeVector.dataBuffer);
writeVector.dataOffset = 0;
writeVector.readSize = 0;
printf("Writing to Checkpoint %s ....\n",DEMO_CKPT_NAME);
printf("Section-Id = %s ....\n",writeVector.sectionId.id);
printf("CheckpointData being written = \"%s\"\n",(char *)writeVector.dataBuffer);
printf("DataOffset = %llu ....\n",writeVector.dataOffset);
rc = saCkptCheckpointWrite(checkpointHandle,&writeVector,1,&erroneousVectorIndex);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
sleep(1);
printf("Press <Enter> key to continue...\n");
getchar();
}
else
{
sleep(4);
readVector.sectionId.id = (unsigned char *)"11";
readVector.sectionId.idLen = 2;
readVector.dataBuffer = read_buff;
readVector.dataSize = 90;
readVector.dataOffset = 0;
printf("Waiting to Read from Checkpoint %s....\n",DEMO_CKPT_NAME);
printf("Press <Enter> key to continue...\n");
getchar();
rc = saCkptCheckpointRead(checkpointHandle,&readVector,1,&erroneousVectorIndex);
printf("Checkpoint Data Read = \"%s\"\n",(char *)readVector.dataBuffer);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
}
printf("Synchronizing My Checkpoint being called ....\n");
rc = saCkptCheckpointSynchronize(checkpointHandle,timeout);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
if(temp_var==1)
{
printf("Unlink My Checkpoint ....\t");
rc = saCkptCheckpointUnlink(ckptHandle,&ckptName);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
}
printf("Ckpt Closed ....\t");
rc = saCkptCheckpointClose(checkpointHandle);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
printf("Ckpt Finalize being called ....\t");
rc = saCkptFinalize(ckptHandle);
if(rc == SA_AIS_OK)
printf("PASSED \n");
else
printf("Failed \n");
sleep(2);
return;
}
static ClRcT checkpoint_initialize()
{
SaAisErrorT rc = SA_AIS_OK;
SaVersionT ckpt_version = {'B', 1, 1};
SaNameT ckpt_name = { strlen(CKPT_NAME), CKPT_NAME };
SaUint32T seq_no;
SaCkptCheckpointCreationAttributesT create_atts = {
.creationFlags = SA_CKPT_WR_ACTIVE_REPLICA_WEAK | SA_CKPT_CHECKPOINT_COLLOCATED,
.checkpointSize = sizeof(SaUint32T),
.retentionDuration = (SaTimeT)0,
.maxSections = 2, // default section, plus section we create
.maxSectionSize = sizeof(SaSizeT),
.maxSectionIdSize = (SaSizeT)64
};
SaCkptSectionCreationAttributesT section_atts = {
.sectionId = &ckpt_sid,
.expirationTime = SA_TIME_END
};
clprintf(CL_LOG_SEV_INFO,"%s: checkpoint_initialize\n", appname);
/* Initialize checkpointing service instance */
rc = saCkptInitialize(&ckpt_svc_handle, /* Checkpoint service handle */
NULL, /* Optional callbacks table */
&ckpt_version); /* Required verison number */
if (rc != SA_AIS_OK)
{
clprintf(CL_LOG_SEV_ERROR,"%s: ERROR: Failed to initialize checkpoint service\n", appname);
return rc;
}
clprintf(CL_LOG_SEV_INFO,"%s: Checkpoint service initialized (handle=0x%x)\n", appname,(unsigned int) ckpt_svc_handle);
//
// Create the checkpoint for read and write. If we fail to open it
// then open it without CREATE. The retry loop is to deal with the
// possibility that multiple processes might all come along here
// and fail to open the checkpoint because it hasn't been created
// yet and then they all try to create the checkpoint. All but
// the first would fail. This retry allows all the rest of the
// processes to come through and open without CREATE
// TODO: change it to a straight retry loop where we start off with
// mode = (CL_CKPT_CHECKPOINT_READ | CL_CKPT_CHECKPOINT_WRITE)
// and on each iteration of the loop we xor in
// CL_CKPT_CHECKPOINT_CREATE. That should let us do the same thing
// but without the duplication of the clCkptCheckpointOpen call
rc = saCkptCheckpointOpen(ckpt_svc_handle, // Service handle
&ckpt_name, // Checkpoint name
&create_atts, // Optional creation attr.
(SA_CKPT_CHECKPOINT_READ |
SA_CKPT_CHECKPOINT_WRITE |
SA_CKPT_CHECKPOINT_CREATE),
(SaTimeT)-1, // No timeout
&ckpt_handle); // Checkpoint handle
if (rc != SA_AIS_OK)
{
clprintf(CL_LOG_SEV_ERROR,"%s: ERROR: Failed [0x%x] to open checkpoint\n", appname, rc);
(void)saCkptFinalize(ckpt_svc_handle);
return rc;
}
clprintf(CL_LOG_SEV_INFO,"%s: Checkpoint opened (handle=0x%x)\n", appname, (unsigned int) ckpt_handle);
/*
* Try to create a section so that updates can operate by overwriting
* the section over and over again.
* If subsequent processes come through here, they will fail to create
* the section. That is OK, even though it will cause an error message
* If the section create fails because the section is already there, then
* read the sequence number
*/
// Put data in network byte order
seq_no = htonl(seq);
// Creating the section
checkpoint_replica_activate();
rc = saCkptSectionCreate(ckpt_handle, // Checkpoint handle
§ion_atts, // Section attributes
(SaUint8T*)&seq_no, // Initial data
(SaSizeT)sizeof(seq_no)); // Size of data
if (rc != SA_AIS_OK && rc != SA_AIS_ERR_EXIST)
{
clprintf(CL_LOG_SEV_ERROR,"%s: ERROR: Failed [0x %x] to create checkpoint section\n", appname, rc);
(void)saCkptCheckpointClose(ckpt_handle);
(void)saCkptFinalize(ckpt_svc_handle);
return rc;
}
else if (rc != SA_AIS_OK && rc == SA_AIS_ERR_EXIST)
{
rc = checkpoint_read_seq(&seq);
if (rc != SA_AIS_OK)
{
clprintf(CL_LOG_SEV_ERROR,"%s: ERROR: Failed [0x%x] to read checkpoint section\n", appname, rc);
(void)saCkptCheckpointClose(ckpt_handle);
(void)saCkptFinalize(ckpt_svc_handle);
return rc;
}
}
else
{
clprintf(CL_LOG_SEV_INFO,"%s: Section created\n", appname);
}
/* Open checkpoint for read to write depending on input argument */
return rc;
}
static SaAisErrorT checkpoint_finalize(void)
{
SaAisErrorT rc;
rc = saCkptCheckpointClose(ckpt_handle);
if (rc != SA_AIS_OK)
{
clprintf(CL_LOG_SEV_ERROR,"%s: failed: [0x%x] to close checkpoint handle %d\n", appname, rc, (unsigned int) ckpt_handle);
}
rc = saCkptFinalize(ckpt_svc_handle);
if (rc != SA_AIS_OK)
{
clprintf(CL_LOG_SEV_ERROR,"%s: failed: [0x%x] to finalize checkpoint\n", appname, rc);
}
return SA_AIS_OK;
}
