Tools, FAQ, Tutorials:
Inspect Transaction Blocks of Channel Blockchain
How to Inspect Transaction Blocks of Channel Blockchain?
✍: FYIcenter.com
You can follow this tutorial to Inspect Transaction Blocks of Channel Blockchain.
1. Connect to the CLI container of the Hyperledger Fabric network:
$ docker exec -it cli bash bash-4.4#
2. Download (fetch) the newest block from "mychannel" channel:
bash-4.4# peer channel fetch newest newest.block -c mychannel [channelCmd] InitCmdFactory -> INFO 001 Endorser and orderer connections initialized [cli.common] readBlock -> INFO 002 Received block: 5 bash-4.4# ls -l -rw-r--r-- 1 root root 4921 Apr 1 18:00 newest.block
3. Parse the transaction block into JSON format:
bash-4.4# configtxgen -inspectBlock newest.block > newest.json ... bash-4.4# ls -l -rw-r--r-- 1 root root 4921 Apr 13 18:00 newest.block -rw-r--r-- 1 root root 10335 Apr 13 18:12 newest.json
4. Copy the block file to the hosting system:
bash-4.4# exit $ docker cp cli:/root/newest.json ./ $ more newest.json { "header": { "data_hash": "CAQ4AibIu3ZjBx8reigN7LlLAh9f/qutxcmAyb/VH+w=", "number": "5", "previous_hash": "KDjkXFvRJAcYTp2ralLNhMAD3eZc0LxfQyHr9DZgl0M=" }, "metadata": { "metadata": [ "CgQKAggCEvgGCq0GCpAGCgpPcmRlcmVyTVNQEoEGLS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0t...", "CgIIAg==", "AA==", "" ] }, "data": { "data": [ { "payload": { "data": { "actions": [ { "header": { "creator": { "id_bytes": "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUNLekNDQWRHZ...", "mspid": "Org1MSP" }, "nonce": "rFGfK1lB88EcQWB0hESLUSB7Zj6TWN46" }, "payload": { "action": { "endorsements": [ { "endorser": "CgdPcmcxTVNQEqoGLS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0...", "signature": "MEUCIQCCIuRNJeN0K9EDbJDBUYvp7Np6563cF7xUJAEqT40k6g..." }, { "endorser": "CgdPcmcyTVNQEqoGLS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0...", "signature": "MEUCIQD43zSLDZKiTPDs62s5bJLJKn3UpTYX95EnW/0gkJg5Lg..." } ], "proposal_response_payload": { "extension": { "chaincode_id": { "name": "mycc", "path": "", "version": "2.0" }, "events": null, "response": { "message": "", "payload": null, "status": 200 }, "results": { "data_model": "KV", "ns_rwset": [ { "collection_hashed_rwset": [], "namespace": "_lifecycle", "rwset": { "metadata_writes": [], "range_queries_info": [], "reads": [ { "key": "namespaces/fields/mycc/Sequence", "version": null } ] } }, { "collection_hashed_rwset": [], "namespace": "lscc", "rwset": { "metadata_writes": [], "range_queries_info": [], "reads": [ { "key": "mycc", "version": { "block_num": "4", "tx_num": "0" } } ] } }, { "collection_hashed_rwset": [], "namespace": "mycc", "rwset": { "metadata_writes": [], "range_queries_info": [], "reads": [ { "key": "a", "version": { "block_num": "4", "tx_num": "0" } }, { "key": "b", "version": { "block_num": "4", "tx_num": "0" } } ], "writes": [ { "is_delete": false, "key": "a", "value": "OTA=" }, { "is_delete": false, "key": "b", "value": "MjEw" } ] } } ] } }, "proposal_hash": "BgCskXWBzaoywJXSkAMOLyO8jLNeTKepYNBz9Db+XN4=" } }, "chaincode_proposal_payload": { "input": { "chaincode_spec": { "chaincode_id": { "name": "mycc", "path": "", "version": "" }, "input": { "args": [ "aW52b2tl", "YQ==", "Yg==", "MTA=" ], "is_init": false }, "timeout": 0, "type": "GOLANG" } } } } } ] }, "header": { "channel_header": { "channel_id": "mychannel", "epoch": "0", "extension": "EgYSBG15Y2M=", "timestamp": "2019-04-01T14:44:32.649599656Z", "tls_cert_hash": null, "tx_id": "e6f391c8ec768f93746c5594981acffc9ce85d33d3c60856138527ccf91ce20a", "type": 3, "version": 0 }, "signature_header": { "creator": { "id_bytes": "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUNLekNDQWRHZ0F...", "mspid": "Org1MSP" }, "nonce": "rFGfK1lB88EcQWB0hESLUSB7Zj6TWN46" } } }, "signature": "MEQCIBzWy9jPYAaDv0cgIOSEWwH1EGwFJOjMOBJUb+W/kjmjAiAsOIn+Uw..." } ] } }
⇒ Hyperledger Fabric Docker Containers
⇐ View Channel Blockchain and Download Blocks
2020-08-13, 418👍, 0💬
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