1. 26 Jan, 2017 1 commit
    • denyeart's avatar
      [FAB-1762] Refactor couchdb history db to leveldb. · 2c982629
      denyeart authored
      
      
      - Utilize leveldb for history of keys instead of couchdb
      
      - Single leveldb database serves all chains to optimize
        footprint (same structure as leveldb block index database
        and leveldb state database)
      
      - Block commit writes a history key for each key/value
        that is updated in a tran, in the form:
         ns~key~blocknum~trannum
      
      - History database is an index for history of key writes
        over time.  The key values are not included to reduce
        size of database.
      
      - GetHistoryForKey() finds all records starting with ~ns~key
        and returns the transactions that updated the key.
      
      - Subsequent changeset will lookup and return the txid
        and historic value from the block storage.  Client can
        then GetTransactionById to see the historic transactions.
      
      - Since history db size is much reduced, it is now enabled
        by default in core.yaml.
      
      - Upon crash recovery, ledger initialization will ensure
        that both state db and history db in sync with block storage
      
      Reused existing test logic, therefore the changeset
      is relatively large to ensure tests still pass.
      
      Change-Id: I79103aa39957f58d246de5b5295fb40a4b9c033b
      Signed-off-by: default avatardenyeart <enyeart@us.ibm.com>
      2c982629
  2. 17 Jan, 2017 1 commit
    • manish's avatar
      SingleLevelDB for block index · 8cdd0f4d
      manish authored
      https://jira.hyperledger.org/browse/FAB-1664
      
      
      
      This changeset:
      - Renames package ledger/util/db to ledger/util/leveldbhelper
      - Implements a leveldb provider
        (that enables using same leveldb instance as a multiple logical dbs)
        in util package for being able to reuse across statedb, index,
        and later for historydb
      - Implements a provider as a single point of invocation
        for managing multiple block storage
      - Uses a single leveldb instance for block storage index
      - Makes the structures other than providers as private
        to their respective packages
      
      Change-Id: I5f0b3b9aa8ef3ac1ccdce4f3c6fa6d842b5318c1
      Signed-off-by: default avatarmanish <manish.sethi@gmail.com>
      8cdd0f4d
  3. 16 Jan, 2017 1 commit
  4. 15 Jan, 2017 1 commit
    • denyeart's avatar
      FAB-1505 and FAB-1337 Refactor CouchDB code · 9df7b0ea
      denyeart authored
      
      
      FAB-1505 refactors CouchDB code to be aligned with LevelDB structure.
      FAB-1337 applies all ledger tests written for LevelDB against CouchDB.
      
      In order to test the CouchDB refactor,
      had to implement FAB-1337 in same changeset to test.
      
      Like most refactors, this changeset touches a lot of files and code,
      since it is not feasible to do a partial refactor.
      
      Tests related to versioning and deleting have been commented out,
      these will be re-enabled in subsequent changeset when CouchDB
      has the support, in order to keep this changeset size more reasonable.
      
      Change-Id: I0d2d6cca89bd0252f6e84317457a9140b3a0d7a5
      Signed-off-by: default avatardenyeart <enyeart@us.ibm.com>
      9df7b0ea
  5. 08 Jan, 2017 1 commit
  6. 14 Dec, 2016 1 commit