Raw ledger provides basic functionality for storing and
retrieving blocks. This is intended to be used by an orderer service
https://jira.hyperledger.org/browse/FAB-56



Change-Id: I3fb733f5be53b6f630c20554ba4e362540b8f55a
Signed-off-by: manish <manish.sethi@gmail.com>

FAB-853

Ledger is removed from
   . core/peer/peer.go
   . core/rest/api.go

Ledger package itself is removed. "ledgernext" is
replaced with "ledger".

Change-Id: Ie7dfbd9bf94afa0031aef759fc46929e4fb3b400
Signed-off-by: Srinivasan Muralidharan <muralisr@us.ibm.com>

Following skeletal end to end flow work, this submit
takes the next steps for Endorser/Committer
  . converts chaincode and endorser to ledgernext
  . removes consensus package
  . chaincode unit tests use ledgernext
  . panics if ledger.GetLedger is called so we
    can catch codepaths that still use that. These
    are mainly core/api and core/peer
  . removes unit tests from core/api and core/ledger
    (to avoid GetLedger calls there)
  . created a minimal core/peernext. core/peer is
    still there for comparison but is not used

Change-Id: I2627e0000e960e1aa66d27ff5ec60a38c4bb7eea
Signed-off-by: Srinivasan Muralidharan <muralisr@us.ibm.com>

This reverts commit 562a35fd, reversing
changes made to 4a78b412.  This was
done because we inadvertently merged a good chunk of master when
patch a96b9edc was submitted to the v0.6 branch.  We will
cherry-pick a96b9edc

 in a later patch to restore the fix
in the proper way.

Change-Id: Ib16c0220e65697a68a5140960b82780c175d9fa2
Signed-off-by: Greg Haskins <gregory.haskins@gmail.com>

The ledgernext and kvledger packages provide APIs to simulate
transactions by collecting read-write sets from invokes of
chaincodes. This change set integrates this for the Endorser
flows.  The main purpose of this code is to enable read write
sets to be propagated so end to end flow ending in a commit to
the ledger can be tested.

The chaincode unit tests continue to use the old ledger. This
allows us to (1) incrementally integrate ledger and (2) show
that the two packages can coexist from a build and runtime
point of view.

It is worth noting that the file kv_ledgers.go hosts a temporary
container for ledgers. This simple approach is expected to be
revised when (sub)ledgers are implemented.

Change-Id: I6e0bf4b9795b83d2ae869244b212c02ef9b5214a
Signed-off-by: Srinivasan Muralidharan <muralisr@us.ibm.com>

This PR addresses chaincode to chaincode invocation for confidential contracts
(https://jira.hyperledger.org/browse/FAB-67

). In order to achieve the goal
the chaincode handler has been modified to contruct proper ephemeral
transactions and security contexts.

Let us consider the following scenario to describe the modification
apported by this PR. Let us say that we have two chaincodes: A and B
where A invokes B at some point of its computation.
When a user invoke a chaincode A, using transaction tx,
the certificate that the user has put in tx is passed to B when A
invokes it. In this way, for example, chaincode B can perfom
attribute-based access control. In addition,
each chaincode can access it is own encrypted state and modify
it in a proper way without affecting other chaincodes' state.

This PR has been tested by adding a unit test in exectransaction_test.go.
The unit tests, verify that C2C invocation can be perfomed when
security is enabled.

What will come next:
1. Chaincode to chaincode query.
2. Additional fields transfered to the invoked chaincode to
support access control based on signature.

Change-Id: I649d1953ac76e8af32d917a089a454fc0bba9fc1
Signed-off-by: Angelo De Caro <adc@zurich.ibm.com>

This allows applications to easily pass arbitrary blobs without having
to serialize them to strings.  At the same time, we also consolidate
the function argument to be part of the repeated bytes args.

For convenience and to simplify porting of existing chaincode to the
new argument format, we introduce helper functions in the shim which
cast between ([][]byte) and (string, []string).

Change-Id: I67562523a208727157c4767e86e1ef437e997f13
Signed-off-by: Gabor Hosszu <gabor@digitalasset.com>

This squashed changeset does the following:
 - It renames UUID to TXID in the code (Go/Java), in tests,
   in proto files, in all chaincode related files
 - It uses all the arguments of the chaincode to
   generate the TXID

Change-Id: Iae6f1fb45c12c2652d9ad18451e75ea1f91fe9a3
Signed-off-by: Gabor Hosszu <gabor@digitalasset.com>

Copied from commit sha 346f9fb448140e931fed73b46f528de6dacbc0d0
to Gerrit. Verified that all DCO signoff received or IBM
contribution.

Change-Id: I812a2f48382a3cd37e153cd056d0ea94b7f416a0
Signed-off-by: Christopher Ferris <chrisfer@us.ibm.com>