c-ipfs/repo/config/replication.c

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#include <stdlib.h>
#include "multiaddr/multiaddr.h"
#include "libp2p/utils/linked_list.h"
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#include "libp2p/utils/logger.h"
#include "ipfs/repo/config/replication.h"
/**
* Allocate a new ReplicationPeer struct
* @returns the new struct
*/
struct ReplicationPeer* repo_config_replication_peer_new() {
struct ReplicationPeer* rp = (struct ReplicationPeer*) malloc(sizeof(struct ReplicationPeer));
if (rp != NULL) {
rp->lastConnect = 0;
rp->lastJournalTime = 0;
rp->peer = NULL;
}
return rp;
}
/***
* Free the resources of a ReplicationPeer
* @param rp the ReplicationPeer to free
* @returns true(1)
*/
int repo_config_replication_peer_free(struct ReplicationPeer* rp) {
if (rp != NULL) {
// we allocated the peer structure, so we must remove it
libp2p_peer_free(rp->peer);
free(rp);
}
return 1;
}
/***
* allocate memory and initialize the replication struct
* @param replication a pointer to the struct to be allocated
* @returns true(1) on success, false(0) otherwise
*/
int repo_config_replication_new(struct Replication** replication) {
*replication = (struct Replication*)malloc(sizeof(struct Replication));
if (*replication == NULL)
return 0;
struct Replication* out = *replication;
out->announce_minutes = 0;
out->replication_peers = NULL;
return 1;
}
/***
* Frees memory of a replication struct
* @param replication the replication struct
* @returns true(1);
*/
int repo_config_replication_free(struct Replication* replication) {
if (replication != NULL) {
// free the vector
if (replication->replication_peers != NULL) {
for(int i = 0; i < replication->replication_peers->total; i++) {
struct ReplicationPeer* currAddr = (struct ReplicationPeer*)libp2p_utils_vector_get(replication->replication_peers, i);
repo_config_replication_peer_free(currAddr);
}
libp2p_utils_vector_free(replication->replication_peers);
}
// free the struct
free(replication);
}
return 1;
}
/***
* Given a peer, return the ReplicationPeer record
* @param replication the context
* @param key the peer to look for
* @returns the ReplicationPeer struct, or NULL if not found
*/
struct ReplicationPeer* repo_config_get_replication_peer(struct Replication* replication, struct Libp2pPeer* key) {
if (replication != NULL) {
if (replication->replication_peers != NULL) {
for(int i = 0; i < replication->replication_peers->total; i++) {
struct ReplicationPeer* confAddr = (struct ReplicationPeer*) libp2p_utils_vector_get(replication->replication_peers, i);
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if (libp2p_peer_matches_id(confAddr->peer, (unsigned char*)key->id, key->id_size)) {
return confAddr;
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}
}
}
}
return NULL;
}
/***
* Determines if this peer is one of our approved replication nodes
* @param replication the replication struct
* @param peer the peer to examine
* @returns true(1) if this peer should be kept syncronized, false(0) otherwise
*/
int repo_config_replication_approved_node(struct Replication* replication, struct Libp2pPeer* peer) {
if (replication != NULL) {
if (repo_config_get_replication_peer(replication, peer) != NULL) {
return 1;
}
}
return 0;
}
/**
* Determine the last time a replication was successful for this peer (at least we sent it something without error)
* @param replication the replication struct
* @param peer the peer to examine
* @returns the time since the last replication, or the announce time if we have no record
*/
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/*
unsigned long long repo_config_replication_last_attempt(struct Replication* replication, struct Libp2pPeer* peer) {
struct ReplicationPeer* rp = repo_config_get_replication_peer(replication, peer);
if (rp != NULL) {
return rp->lastConnect;
}
return 0;
}
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*/
/***
* Determine the last journal record time that was sent to this peer
* @param replication the replication struct
* @param peer the peer to examine
* @returns the time of the last journal entry successfully sent
*/
unsigned long long repo_config_replication_last_journal_time(struct Replication* replication, struct Libp2pPeer* peer) {
struct ReplicationPeer* rp = repo_config_get_replication_peer(replication, peer);
if (rp != NULL) {
return rp->lastJournalTime;
}
return 0;
}