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processing want list

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This commit is contained in:
jmjatlanta 2017-08-02 07:04:06 -05:00
parent 7632949e30
commit 0638996684
4 changed files with 66 additions and 7 deletions
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12
exchange/bitswap/network.c
View file

@ -54,8 +54,8 @@ int ipfs_bitswap_network_remove_cid_from_queue(struct Libp2pVector* collection,
return 0;
for(int i = 0; i < collection->total; collection++) {
const struct Cid* current = (const struct Cid*)libp2p_utils_vector_get(collection, i);
if (ipfs_cid_compare(current, cid) == 0) {
const struct CidEntry* current = (const struct CidEntry*)libp2p_utils_vector_get(collection, i);
if (ipfs_cid_compare(current->cid, cid) == 0) {
libp2p_utils_vector_delete(collection, i);
return 1;
}
@ -140,8 +140,12 @@ int ipfs_bitswap_network_handle_message(const struct IpfsNode* node, const struc
}
if (entry->cancel)
ipfs_bitswap_network_remove_cid_from_queue(queueEntry->current->cids_they_want, cid);
else
libp2p_utils_vector_add(queueEntry->current->cids_they_want, cid);
else {
struct CidEntry* entry = ipfs_bitswap_peer_request_cid_entry_new();
entry->cid = cid;
entry->cancel = 0;
libp2p_utils_vector_add(queueEntry->current->cids_they_want, entry);
}
}
}
return 1;

49
exchange/bitswap/peer_request_queue.c
View file

@ -10,6 +10,18 @@
#include "ipfs/exchange/bitswap/message.h"
#include "ipfs/exchange/bitswap/network.h"
/***
* Allocate memory for CidEntry
* @returns new CidEntry struct
*/
struct CidEntry* ipfs_bitswap_peer_request_cid_entry_new() {
struct CidEntry* entry = (struct CidEntry*) malloc(sizeof(struct CidEntry));
if (entry != NULL) {
entry->cid = NULL;
entry->cancel = 0;
}
return entry;
}
/**
* Allocate resources for a new PeerRequest
* @returns a new PeerRequest struct or NULL if there was a problem
@ -216,6 +228,40 @@ int ipfs_bitswap_peer_request_queue_fill(struct PeerRequestQueue* queue, struct
return 0;
}
/****
* Find blocks they want, and put them in the request
*/
int ipfs_bitswap_peer_request_get_blocks_they_want(const struct BitswapContext* context, struct PeerRequest* request) {
for(int i = 0; i < request->cids_they_want->total; i++) {
struct CidEntry* cidEntry = (struct CidEntry*)libp2p_utils_vector_get(request->cids_they_want, i);
if (cidEntry != NULL && !cidEntry->cancel) {
struct Block* block = NULL;
context->ipfsNode->blockstore->Get(context->ipfsNode->blockstore->blockstoreContext, cidEntry->cid, &block);
if (block != NULL) {
libp2p_utils_vector_add(request->blocks_we_want_to_send, block);
cidEntry->cancel = 1;
}
}
}
return 0;
}
/***
* Determine if any of the cids in the list are waiting to be filled
* @param cidEntries a Vector of CidEntry objects
* @returns true(1) if we have some waiting, false(0) otherwise
*/
int ipfs_peer_request_cids_waiting(struct Libp2pVector* cidEntries) {
if (cidEntries == NULL)
return 0;
for(int i = 0; i < cidEntries->total; i++) {
const struct CidEntry* entry = (const struct CidEntry*)libp2p_utils_vector_get(cidEntries, i);
if (entry != NULL && !entry->cancel)
return 1;
}
return 0;
}
/****
* Handle a PeerRequest
* @param context the BitswapContext
@ -235,7 +281,7 @@ int ipfs_bitswap_peer_request_process_entry(const struct BitswapContext* context
}
// determine if we're connected
int connected = request->peer->is_local || request->peer->connection_type == CONNECTION_TYPE_CONNECTED;
int need_to_connect = request->cids_we_want->total != 0 || request->cids_they_want->total != 0 || request->blocks_we_want_to_send->total != 0;
int need_to_connect = request->cids_we_want->total != 0 || ipfs_peer_request_cids_waiting(request->cids_they_want) || request->blocks_we_want_to_send->total != 0;
// determine if we need to connect
if (need_to_connect) {
@ -247,6 +293,7 @@ int ipfs_bitswap_peer_request_process_entry(const struct BitswapContext* context
// build a message
struct BitswapMessage* msg = ipfs_bitswap_message_new();
// see if we can fulfill any of their requests. If so, fill in msg->payload
ipfs_bitswap_peer_request_get_blocks_they_want(context, request);
ipfs_bitswap_message_add_blocks(msg, request->blocks_we_want_to_send);
// add requests that we would like
ipfs_bitswap_message_add_wantlist_items(msg, request->cids_we_want);

4
exchange/bitswap/wantlist_queue.c
View file

@ -250,7 +250,9 @@ int ipfs_bitswap_wantlist_get_block_remote(struct BitswapContext* context, struc
struct Libp2pPeer* current = (struct Libp2pPeer*) libp2p_utils_vector_get(providers, i);
// add this to their queue
struct PeerRequest* queueEntry = ipfs_peer_request_queue_find_peer(context->peerRequestQueue, current);
libp2p_utils_vector_add(queueEntry->cids_we_want, cid);
struct CidEntry* entry = ipfs_bitswap_peer_request_cid_entry_new();
entry->cid = cid;
libp2p_utils_vector_add(queueEntry->cids_we_want, entry);
// process this queue via bitswap protocol
ipfs_bitswap_peer_request_process_entry(context, queueEntry);
}

8
include/ipfs/exchange/bitswap/peer_request_queue.h
View file

@ -17,7 +17,7 @@ struct CidEntry {
struct PeerRequest {
pthread_mutex_t request_mutex;
struct Libp2pPeer* peer;
// Cid collection of cids that they want. Note cancellations are removed immediately
// CidEntry collection of cids that they want
struct Libp2pVector* cids_they_want;
// CidEntry collection of cids that we want or are canceling
struct Libp2pVector* cids_we_want;
@ -39,6 +39,12 @@ struct PeerRequestQueue {
struct PeerRequestEntry* last;
};
/***
* Allocate memory for CidEntry
* @returns new CidEntry struct
*/
struct CidEntry* ipfs_bitswap_peer_request_cid_entry_new();
/**
* Allocate resources for a new PeerRequest
* @returns a new PeerRequest struct or NULL if there was a problem