/**
* Receive a ContentObject message that comes back from the tutorial_Server in response to an Interest we sent.
* This message will be a chunk of the requested content, and should be received in ordered sequence.
* Depending on the CCNxName in the content object, we hand it off to either _receiveFileChunk() or
* _receiveDirectoryListingChunk() to process.
*
* @param [in] contentObject A CCNxContentObject containing a response to an CCNxInterest we sent.
* @param [in] domainPrefix A CCNxName containing the domain prefix of the content we requested.
*
* @return The number of chunks of the content left to transfer.
*/
static uint64_t
_receiveContentObject(CCNxContentObject *contentObject, const CCNxName *domainPrefix)
{
CCNxName *contentName = ccnxContentObject_GetName(contentObject);
uint64_t chunkNumber = tutorialCommon_GetChunkNumberFromName(contentName);
// Get the number of the final chunk, as specified by the sender.
uint64_t finalChunkNumberSpecifiedByServer = ccnxContentObject_GetFinalChunkNumber(contentObject);
// Get the type of the incoming message. Was it a response to a fetch' or a 'list' command?
char *command = tutorialCommon_CreateCommandStringFromName(contentName, domainPrefix);
// Process the payload.
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
if (strncasecmp(command, tutorialCommon_CommandList, strlen(command)) == 0) {
// This is a chunk of the directory listing.
_receiveDirectoryListingChunk(payload, chunkNumber, finalChunkNumberSpecifiedByServer);
} else if (strncasecmp(command, tutorialCommon_CommandFetch, strlen(command)) == 0) {
// This is a chunk of a file.
char *fileName = tutorialCommon_CreateFileNameFromName(contentName);
_receiveFileChunk(fileName, payload, chunkNumber, finalChunkNumberSpecifiedByServer);
parcMemory_Deallocate((void **) &fileName);
} else {
printf("tutorial_Client: Unknown command: %s\n", command);
}
parcMemory_Deallocate((void **) &command);
return (finalChunkNumberSpecifiedByServer - chunkNumber); // number of chunks left to transfer
}
LONGBOW_TEST_CASE(Local, _athenaLRUContentStore_ProcessMessage_StatHits)
{
AthenaLRUContentStore *impl = _createLRUContentStore();
CCNxName *name = ccnxName_CreateFromURI(CCNxNameAthena_ContentStore "/stat/hits");
CCNxInterest *interest = ccnxInterest_CreateSimple(name);
ccnxName_Release(&name);
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromInterest(interest);
ccnxInterest_Release(&interest);
CCNxMetaMessage *response = _athenaLRUContentStore_ProcessMessage(impl, message);
assertNotNull(response, "Expected a response to ProcessMessage()");
assertTrue(ccnxMetaMessage_IsContentObject(response), "Expected a content object");
CCNxContentObject *content = ccnxMetaMessage_GetContentObject(response);
PARCBuffer *payload = ccnxContentObject_GetPayload(content);
parcBuffer_Display(payload, 0);
ccnxMetaMessage_Release(&message);
ccnxMetaMessage_Release(&response);
_athenaLRUContentStore_Release((AthenaContentStoreImplementation *) &impl);
}
static size_t
_calculateSizeOfContentObject(const CCNxContentObject *contentObject)
{
size_t result = 0;
char *nameAsString = ccnxName_ToString(ccnxContentObject_GetName(contentObject));
result += strlen(nameAsString);
parcMemory_DeallocateImpl((void **) &nameAsString);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
if (payload != NULL) {
result += parcBuffer_Limit(payload);
}
return result;
}
LONGBOW_TEST_CASE(Global, ccnxContentObject_GetPayload)
{
CCNxName *name = ccnxName_CreateFromCString("lci:/foo/bar");
PARCBuffer *payload = parcBuffer_Allocate(100);
CCNxContentObject *contentObject = ccnxContentObject_CreateWithDataPayload(name, payload);
ccnxContentObject_AssertValid(contentObject);
PARCBuffer *actual = ccnxContentObject_GetPayload(contentObject);
assertTrue(actual == payload, "Expected GetPayload() to return the original PARCBuffer");
ccnxName_Release(&name);
parcBuffer_Release(&payload);
ccnxContentObject_Release(&contentObject);
}
int
consumer(void)
{
parcSecurity_Init();
CCNxPortalFactory *factory = setupConsumerFactory();
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(factory, ccnxPortalRTA_Message);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
CCNxName *name = ccnxName_CreateFromCString("lci:/Hello/World");
CCNxInterest *interest = ccnxInterest_CreateSimple(name);
ccnxName_Release(&name);
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromInterest(interest);
if (ccnxPortal_Send(portal, message,CCNxStackTimeout_Never)) {
while (ccnxPortal_IsError(portal) == false) {
CCNxMetaMessage *response = ccnxPortal_Receive(portal,CCNxStackTimeout_Never);
if (response != NULL) {
if (ccnxMetaMessage_IsContentObject(response)) {
CCNxContentObject *contentObject = ccnxMetaMessage_GetContentObject(response);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
char *string = parcBuffer_ToString(payload);
printf("%s\n", string);
parcMemory_Deallocate((void **)&string);
break;
}
}
ccnxMetaMessage_Release(&response);
}
}
ccnxPortal_Release(&portal);
ccnxPortalFactory_Release(&factory);
parcSecurity_Fini();
return 0;
}
int
ccnGet(PARCIdentity *identity, CCNxName *name)
{
CCNxPortalFactory *factory = ccnxPortalFactory_Create(identity);
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(factory, ccnxPortalRTA_Message);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
CCNxInterest *interest = ccnxInterest_CreateSimple(name);
ccnxName_Release(&name);
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromInterest(interest);
if (ccnxPortal_Send(portal, message, CCNxStackTimeout_Never)) {
while (ccnxPortal_IsError(portal) == false) {
CCNxMetaMessage *response = ccnxPortal_Receive(portal, CCNxStackTimeout_Never);
if (response != NULL) {
if (ccnxMetaMessage_IsContentObject(response)) {
CCNxContentObject *contentObject = ccnxMetaMessage_GetContentObject(response);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
size_t length = parcBuffer_Remaining(payload);
ssize_t nwritten = write(1, parcBuffer_Overlay(payload, length), length);
assertTrue(nwritten == length, "Did not write whole buffer, got %zd expected %zu", nwritten, length);
break;
}
ccnxMetaMessage_Release(&response);
}
}
}
ccnxPortal_Release(&portal);
ccnxPortalFactory_Release(&factory);
return 0;
}
LONGBOW_TEST_CASE(Global, Hello)
{
TestData *data = longBowTestCase_GetClipBoardData(testCase);
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(data->factory, TEST_STACK);
CCNxPortal *portalIn = ccnxPortalFactory_CreatePortal(data->factory, TEST_STACK);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
CCNxName *name = ccnxName_CreateFromCString("lci:/Hello/World");
CCNxInterest *interest = ccnxInterest_CreateSimple(name);
CCNxMetaMessage *interestMessage = ccnxMetaMessage_CreateFromInterest(interest);
if (ccnxPortal_Send(portal, interestMessage, CCNxStackTimeout_Never)) {
for (int responses = 0; responses == 0; ) {
CCNxMetaMessage *message = ccnxPortal_Receive(portalIn, CCNxStackTimeout_Never);
if (message != NULL) {
if (ccnxMetaMessage_IsContentObject(message)) {
CCNxContentObject *contentObject = ccnxMetaMessage_GetContentObject(message);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
if (parcBuffer_HasRemaining(payload) == false) {
fprintf(stderr, "**************** Content object has arrived WITH EMPTY CONTENT\n");
} else {
char *string = parcBuffer_ToString(payload);
fprintf(stderr, "**************** Content object has arrived: %s\n", string);
parcMemory_Deallocate((void **)&string);
}
responses++;
}
ccnxMetaMessage_Release(&message);
}
}
}
ccnxMetaMessage_Release(&interestMessage);
ccnxPortal_Release(&portal);
}
static const char *
_athenactl_SendInterestControl(PARCIdentity *identity, CCNxMetaMessage *message)
{
const char *result = NULL;
CCNxPortalFactory *factory = ccnxPortalFactory_Create(identity);
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(factory, ccnxPortalRTA_Message);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
athenactl_EncodeMessage(message);
if (ccnxPortal_Send(portal, message, CCNxStackTimeout_Never)) {
while (ccnxPortal_IsError(portal) == false) {
CCNxMetaMessage *response = ccnxPortal_Receive(portal, CCNxStackTimeout_Never);
if (response != NULL) {
if (ccnxMetaMessage_IsContentObject(response)) {
CCNxContentObject *contentObject = ccnxMetaMessage_GetContentObject(response);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
if (payload) {
result = parcBuffer_ToString(payload);
}
}
ccnxMetaMessage_Release(&response);
break;
}
}
}
ccnxPortal_Release(&portal);
ccnxPortalFactory_Release(&factory);
return result;
}
/**
* Run the consumer to fetch the specified file. Save it to disk once transferred.
*
* @param [in] target Name of the content to request.
* @param [in] outFile Name of the file to which the buffer will be written.
*/
static int
_ccnxFileRepoClient_Run(char *target, char *outFile)
{
parcSecurity_Init();
PARCLog *log = _ccnxFileRepoClient_CreateLogger();
CCNxPortalFactory *factory = _setupConsumerPortalFactory();
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(factory, ccnxPortalRTA_Message);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
CCNxName *name = ccnxName_CreateFromCString(target);
CCNxInterest *interest = ccnxInterest_CreateSimple(name);
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromInterest(interest);
if (ccnxPortal_Send(portal, message, CCNxStackTimeout_Never)) {
while (ccnxPortal_IsError(portal) == false) {
CCNxMetaMessage *response = ccnxPortal_Receive(portal, CCNxStackTimeout_Never);
if (response != NULL) {
if (ccnxMetaMessage_IsManifest(response)) {
parcLog_Info(log, "Received root manifest. Beginning to retrieve the content.");
// Extract the manifest and instantiate a new fetcher for it
CCNxManifest *root = ccnxMetaMessage_GetManifest(response);
CCNxFileRepoManifestFetcher *fetcher = ccnxFileRepoManifestFetcher_Create(portal, root);
// Initialize the file offset and I/O buffer
size_t fileOffset = 0;
PARCBuffer *chunkBuffer = parcBuffer_Allocate(ccnxFileRepoCommon_ClientBufferSize);
// Start reading from the manifest until done
bool done = false;
while (!done) {
// Reset the buffer information
parcBuffer_SetPosition(chunkBuffer, 0);
parcBuffer_SetLimit(chunkBuffer, ccnxFileRepoCommon_ClientBufferSize);
// Fill the buffer with data from the manifest
done = ccnxFileRepoManifestFetcher_FillBuffer(fetcher, chunkBuffer);
parcBuffer_Flip(chunkBuffer);
// Write the buffer to the file
size_t totalSize = parcBuffer_Remaining(chunkBuffer);
_ccnxFileRepoClient_AppendBufferToFile(outFile, chunkBuffer, fileOffset);
fileOffset += totalSize;
// Flip the buffer back around for writing
parcBuffer_Flip(chunkBuffer);
}
parcBuffer_Release(&chunkBuffer);
break;
} else if (ccnxMetaMessage_IsContentObject(response)) {
parcLog_Info(log, "Received a content object. Dump the payload and exit.");
CCNxContentObject *contentObject = ccnxMetaMessage_GetContentObject(response);
PARCBuffer *payload = ccnxContentObject_GetPayload(contentObject);
_ccnxFileRepoClient_AppendBufferToFile(outFile, payload, 0);
break;
}
}
ccnxMetaMessage_Release(&response);
}
}
ccnxPortal_Release(&portal);
ccnxPortalFactory_Release(&factory);
parcSecurity_Fini();
return 0;
}
