57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/**
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* A basic storage building block of the IPFS system
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*/
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#include "ipfs/merkledag/merkledag.h"
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/***
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* Adds a node to the dagService and blockService
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* @param node the node to add
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* @param cid the resultant cid that was added
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* @returns true(1) on success
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*/
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int ipfs_merkledag_add(struct Node* node, struct FSRepo* fs_repo) {
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// taken from merkledag.go line 59
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// turn the node into a block
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struct Block* block;
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ipfs_blocks_block_new(node->data, node->data_size, &block);
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int retVal = fs_repo->config->datastore->datastore_put_block(block, fs_repo->config->datastore);
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if (retVal == 0) {
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ipfs_blocks_block_free(block);
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return 0;
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}
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Node_Set_Cached(node, block->cid);
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ipfs_blocks_block_free(block);
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// TODO: call HasBlock (unsure why as yet)
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return 1;
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}
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/***
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* Retrieves a node from the datastore based on the cid
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* @param cid the key to look for
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* @param node the node to be created
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* @param fs_repo the repository
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* @returns true(1) on success
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*/
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int ipfs_merkledag_get(const struct Cid* cid, struct Node** node, const struct FSRepo* fs_repo) {
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int retVal = 1;
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// look for the block
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struct Block* block;
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retVal = fs_repo->config->datastore->datastore_get_block(cid, &block, fs_repo->config->datastore);
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if (retVal == 0)
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return 0;
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// we have the block. Fill the node
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*node = N_Create_From_Data(block->data, block->data_length);
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Node_Set_Cached(*node, cid);
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ipfs_blocks_block_free(block);
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return retVal;
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}
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