# peer chaincode

The `peer chaincode` command allows administrators to perform chaincode
related operations on a peer, such as installing, instantiating, invoking,
packaging, querying, and upgrading chaincode.

## Syntax

The `peer chaincode` command has the following subcommands:

  * install
  * instantiate
  * invoke
  * list
  * package
  * query
  * signpackage
  * upgrade

The different subcommand options (install, instantiate...) relate to the
different chaincode operations that are relevant to a peer. For example, use the
`peer chaincode install` subcommand option to install a chaincode on a peer, or
the `peer chaincode query` subcommand option to query a chaincode for the
current value on a peer's ledger.

Each peer chaincode subcommand is described together with its options in its own
section in this topic.

## Flags

Each `peer chaincode` subcommand has both a set of flags specific to an
individual subcommand, as well as a set of global flags that relate to all
`peer chaincode` subcommands. Not all subcommands would use these flags.
For instance, the `query` subcommand does not need the `--orderer` flag.

The individual flags are described with the relevant subcommand. The global
flags are

* `--cafile <string>`

  Path to file containing PEM-encoded trusted certificate(s) for the ordering
  endpoint

* `--certfile <string>`

  Path to file containing PEM-encoded X509 public key to use for mutual TLS
  communication with the orderer endpoint

* `--keyfile <string>`

  Path to file containing PEM-encoded private key to use for mutual TLS
  communication with the orderer endpoint

* `-o` or `--orderer <string>`

  Ordering service endpoint specified as `<hostname or IP address>:<port>`

* `--ordererTLSHostnameOverride <string>`

  The hostname override to use when validating the TLS connection to the orderer

* `--tls`

  Use TLS when communicating with the orderer endpoint

* `--transient <string>`

  Transient map of arguments in JSON encoding

## peer chaincode install
```
Install a chaincode on a peer. This installs a chaincode deployment spec package (if provided) or packages the specified chaincode before subsequently installing it.

Usage:
  peer chaincode install [flags]

Flags:
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -h, --help                           help for install
  -l, --lang string                    Language the chaincode is written in (default "golang")
  -n, --name string                    Name of the chaincode
  -p, --path string                    Path to chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag
  -v, --version string                 Version of the chaincode specified in install/instantiate/upgrade commands

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode instantiate
```
Deploy the specified chaincode to the network.

Usage:
  peer chaincode instantiate [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --collections-config string      The fully qualified path to the collection JSON file including the file name
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -E, --escc string                    The name of the endorsement system chaincode to be used for this chaincode
  -h, --help                           help for instantiate
  -l, --lang string                    Language the chaincode is written in (default "golang")
  -n, --name string                    Name of the chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
  -P, --policy string                  The endorsement policy associated to this chaincode
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag
  -v, --version string                 Version of the chaincode specified in install/instantiate/upgrade commands
  -V, --vscc string                    The name of the verification system chaincode to be used for this chaincode

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode invoke
```
Invoke the specified chaincode. It will try to commit the endorsed transaction to the network.

Usage:
  peer chaincode invoke [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -h, --help                           help for invoke
  -I, --isInit                         Is this invocation for init (useful for supporting legacy chaincodes in the new lifecycle)
  -n, --name string                    Name of the chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag
      --waitForEvent                   Whether to wait for the event from each peer's deliver filtered service signifying that the 'invoke' transaction has been committed successfully
      --waitForEventTimeout duration   Time to wait for the event from each peer's deliver filtered service signifying that the 'invoke' transaction has been committed successfully (default 30s)

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode list
```
Get the instantiated chaincodes in the channel if specify channel, or get installed chaincodes on the peer

Usage:
  peer chaincode list [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -h, --help                           help for list
      --installed                      Get the installed chaincodes on a peer
      --instantiated                   Get the instantiated chaincodes on a channel
      --peerAddresses stringArray      The addresses of the peers to connect to
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode package
```
Package a chaincode and write the package to a file.

Usage:
  peer chaincode package [outputfile] [flags]

Flags:
  -s, --cc-package                  create CC deployment spec for owner endorsements instead of raw CC deployment spec
  -c, --ctor string                 Constructor message for the chaincode in JSON format (default "{}")
  -h, --help                        help for package
  -i, --instantiate-policy string   instantiation policy for the chaincode
  -l, --lang string                 Language the chaincode is written in (default "golang")
  -n, --name string                 Name of the chaincode
  -p, --path string                 Path to chaincode
  -S, --sign                        if creating CC deployment spec package for owner endorsements, also sign it with local MSP
  -v, --version string              Version of the chaincode specified in install/instantiate/upgrade commands

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode query
```
Get endorsed result of chaincode function call and print it. It won't generate transaction.

Usage:
  peer chaincode query [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -h, --help                           help for query
  -x, --hex                            If true, output the query value byte array in hexadecimal. Incompatible with --raw
  -n, --name string                    Name of the chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
  -r, --raw                            If true, output the query value as raw bytes, otherwise format as a printable string
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode signpackage
```
Sign the specified chaincode package

Usage:
  peer chaincode signpackage [flags]

Flags:
  -h, --help   help for signpackage

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```


## peer chaincode upgrade
```
Upgrade an existing chaincode with the specified one. The new chaincode will immediately replace the existing chaincode upon the transaction committed.

Usage:
  peer chaincode upgrade [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --collections-config string      The fully qualified path to the collection JSON file including the file name
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -E, --escc string                    The name of the endorsement system chaincode to be used for this chaincode
  -h, --help                           help for upgrade
  -l, --lang string                    Language the chaincode is written in (default "golang")
  -n, --name string                    Name of the chaincode
  -p, --path string                    Path to chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
  -P, --policy string                  The endorsement policy associated to this chaincode
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag
  -v, --version string                 Version of the chaincode specified in install/instantiate/upgrade commands
  -V, --vscc string                    The name of the verification system chaincode to be used for this chaincode

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer
      --tls                                 Use TLS when communicating with the orderer endpoint
      --tlsHandshakeTimeShift duration      The amount of time to shift backwards for certificate expiration checks during TLS handshakes with the orderer endpoint
      --transient string                    Transient map of arguments in JSON encoding
```

## Example Usage

### peer chaincode instantiate examples

Here are some examples of the `peer chaincode instantiate` command, which
instantiates the chaincode named `mycc` at version `1.0` on channel
`mychannel`:

  * Using the `--tls` and `--cafile` global flags to instantiate the chaincode
    in a network with TLS enabled:

    ```
    export ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
    peer chaincode instantiate -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n mycc -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"

    2018-02-22 16:33:53.324 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
    2018-02-22 16:33:53.324 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc
    2018-02-22 16:34:08.698 UTC [main] main -> INFO 003 Exiting.....

    ```

  * Using only the command-specific options to instantiate the chaincode in a
    network with TLS disabled:

    ```
    peer chaincode instantiate -o orderer.example.com:7050 -C mychannel -n mycc -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"


    2018-02-22 16:34:09.324 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
    2018-02-22 16:34:09.324 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc
    2018-02-22 16:34:24.698 UTC [main] main -> INFO 003 Exiting.....
    ```

### peer chaincode invoke example

Here is an example of the `peer chaincode invoke` command:

  * Invoke the chaincode named `mycc` at version `1.0` on channel `mychannel`
    on `peer0.org1.example.com:7051` and `peer0.org2.example.com:9051` (the
    peers defined by `--peerAddresses`), requesting to move 10 units from
    variable `a` to variable `b`:

    ```
    peer chaincode invoke -o orderer.example.com:7050 -C mychannel -n mycc --peerAddresses peer0.org1.example.com:7051 --peerAddresses peer0.org2.example.com:9051 -c '{"Args":["invoke","a","b","10"]}'

    2018-02-22 16:34:27.069 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
    2018-02-22 16:34:27.069 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc
    .
    .
    .
    2018-02-22 16:34:27.106 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> DEBU 00a ESCC invoke result: version:1 response:<status:200 message:"OK" > payload:"\n \237mM\376? [\214\002 \332\204\035\275q\227\2132A\n\204&\2106\037W|\346#\3413\274\022Y\nE\022\024\n\004lscc\022\014\n\n\n\004mycc\022\002\010\003\022-\n\004mycc\022%\n\007\n\001a\022\002\010\003\n\007\n\001b\022\002\010\003\032\007\n\001a\032\00290\032\010\n\001b\032\003210\032\003\010\310\001\"\013\022\004mycc\032\0031.0" endorsement:<endorser:"\n\007Org1MSP\022\262\006-----BEGIN CERTIFICATE-----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\nAiAlQffq2JFlbh6OWURGOko6RckizG8oVOldZG/Xj3C8lA==\n-----END CERTIFICATE-----\n" signature:"0D\002 \022_\342\350\344\231G&\237\n\244\375\302J\220l\302\345\210\335D\250y\253P\0214:\221e\332@\002 \000\254\361\224\247\210\214L\277\370\222\213\217\301\r\341v\227\265\277\336\256^\217\336\005y*\321\023\025\367" >
    2018-02-22 16:34:27.107 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 00b Chaincode invoke successful. result: status:200
    2018-02-22 16:34:27.107 UTC [main] main -> INFO 00c Exiting.....

    ```

    Here you can see that the invoke was submitted successfully based on the log
    message:

    ```
    2018-02-22 16:34:27.107 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 00b Chaincode invoke successful. result: status:200

    ```

    A successful response indicates that the transaction was submitted for ordering
    successfully. The transaction will then be added to a block and, finally, validated
    or invalidated by each peer on the channel.

Here is an example of how to format the `peer chaincode invoke` command when the chaincode package includes multiple smart contracts.

  * If you are using the [contract-api](https://www.npmjs.com/package/fabric-contract-api), the name you pass to `super("MyContract")` can be used as a prefix.

    ```
    peer chaincode invoke -C $CHANNEL_NAME -n $CHAINCODE_NAME -c '{ "Args": ["MyContract:methodName", "{}"] }'

    peer chaincode invoke -C $CHANNEL_NAME -n $CHAINCODE_NAME -c '{ "Args": ["MyOtherContract:methodName", "{}"] }'

    ```


### peer chaincode list example

Here are some examples of the `peer chaincode list ` command:

  * Using the `--installed` flag to list the chaincodes installed on a peer.

    ```
    peer chaincode list --installed

    Get installed chaincodes on peer:
    Name: mycc, Version: 1.0, Path: github.com/hyperledger/fabric-samples/chaincode/abstore/go, Id: 8cc2730fdafd0b28ef734eac12b29df5fc98ad98bdb1b7e0ef96265c3d893d61
    2018-02-22 17:07:13.476 UTC [main] main -> INFO 001 Exiting.....
    ```

    You can see that the peer has installed a chaincode called `mycc` which is at
    version `1.0`.

  * Using the `--instantiated` in combination with the `-C` (channel ID) flag to
    list the chaincodes instantiated on a channel.

    ```
    peer chaincode list --instantiated -C mychannel

    Get instantiated chaincodes on channel mychannel:
    Name: mycc, Version: 1.0, Path: github.com/hyperledger/fabric-samples/chaincode/abstore/go, Escc: escc, Vscc: vscc
    2018-02-22 17:07:42.969 UTC [main] main -> INFO 001 Exiting.....

    ```

    You can see that chaincode `mycc` at version `1.0` is instantiated on
    channel `mychannel`.

### peer chaincode package example

Here is an example of the `peer chaincode package` command, which
packages the chaincode named `mycc` at version `1.1`, creates the chaincode
deployment spec, signs the package using the local MSP, and outputs it as
`ccpack.out`:

  ```
    peer chaincode package ccpack.out -n mycc -p github.com/hyperledger/fabric-samples/chaincode/abstore/go -v 1.1 -s -S
    .
    .
    .
    2018-02-22 17:27:01.404 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
    2018-02-22 17:27:01.405 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
    .
    .
    .
    2018-02-22 17:27:01.879 UTC [chaincodeCmd] chaincodePackage -> DEBU 011 Packaged chaincode into deployment spec of size <3426>, with args = [ccpack.out]
    2018-02-22 17:27:01.879 UTC [main] main -> INFO 012 Exiting.....

    ```

### peer chaincode query example

Here is an example of the `peer chaincode query` command, which queries the
peer ledger for the chaincode named `mycc` at version `1.0` for the value of
variable `a`:

  * You can see from the output that variable `a` had a value of 90 at the time of
    the query.

    ```
    peer chaincode query -C mychannel -n mycc -c '{"Args":["query","a"]}'

    2018-02-22 16:34:30.816 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
    2018-02-22 16:34:30.816 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc
    Query Result: 90

    ```

### peer chaincode signpackage example

Here is an example of the `peer chaincode signpackage` command, which accepts an
existing signed  package and creates a new one with signature of the local MSP
appended to it.

  ```
  peer chaincode signpackage ccwith1sig.pak ccwith2sig.pak
  Wrote signed package to ccwith2sig.pak successfully
  2018-02-24 19:32:47.189 EST [main] main -> INFO 002 Exiting.....
  ```

### peer chaincode upgrade example

Here is an example of the `peer chaincode upgrade` command, which
upgrades the chaincode named `mycc` at version `1.1` on channel
`mychannel` to version `1.2`, which contains a new variable `c`:

  * Using the `--tls` and `--cafile` global flags to upgrade the chaincode
    in a network with TLS enabled:

    ```
    export ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
    peer chaincode upgrade -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n mycc -v 1.2 -c '{"Args":["init","a","100","b","200","c","300"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"
    .
    .
    .
    2018-02-22 18:26:31.433 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
    2018-02-22 18:26:31.434 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
    2018-02-22 18:26:31.435 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode enabled
    2018-02-22 18:26:31.435 UTC [chaincodeCmd] upgrade -> DEBU 006 Get upgrade proposal for chaincode <name:"mycc" version:"1.1" >
    .
    .
    .
    2018-02-22 18:26:46.687 UTC [chaincodeCmd] upgrade -> DEBU 009 endorse upgrade proposal, get response <status:200 message:"OK" payload:"\n\004mycc\022\0031.1\032\004escc\"\004vscc*,\022\014\022\n\010\001\022\002\010\000\022\002\010\001\032\r\022\013\n\007Org1MSP\020\003\032\r\022\013\n\007Org2MSP\020\0032f\n \261g(^v\021\220\240\332\251\014\204V\210P\310o\231\271\036\301\022\032\205fC[|=\215\372\223\022 \311b\025?\323N\343\325\032\005\365\236\001XKj\004E\351\007\247\265fu\305j\367\331\275\253\307R\032 \014H#\014\272!#\345\306s\323\371\350\364\006.\000\356\230\353\270\263\215\217\303\256\220i^\277\305\214: \375\200zY\275\203}\375\244\205\035\340\226]l!uE\334\273\214\214\020\303\3474\360\014\234-\006\315B\031\022\010\022\006\010\001\022\002\010\000\032\r\022\013\n\007Org1MSP\020\001" >
    .
    .
    .
    2018-02-22 18:26:46.693 UTC [chaincodeCmd] upgrade -> DEBU 00c Get Signed envelope
    2018-02-22 18:26:46.693 UTC [chaincodeCmd] chaincodeUpgrade -> DEBU 00d Send signed envelope to orderer
    2018-02-22 18:26:46.908 UTC [main] main -> INFO 00e Exiting.....
    ```

  * Using only the command-specific options to upgrade the chaincode in a
    network with TLS disabled:

    ```
    peer chaincode upgrade -o orderer.example.com:7050 -C mychannel -n mycc -v 1.2 -c '{"Args":["init","a","100","b","200","c","300"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"
    .
    .
    .
    2018-02-22 18:28:31.433 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
    2018-02-22 18:28:31.434 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
    2018-02-22 18:28:31.435 UTC [chaincodeCmd] getChaincodeSpec -> DEBU 005 java chaincode enabled
    2018-02-22 18:28:31.435 UTC [chaincodeCmd] upgrade -> DEBU 006 Get upgrade proposal for chaincode <name:"mycc" version:"1.1" >
    .
    .
    .
    2018-02-22 18:28:46.687 UTC [chaincodeCmd] upgrade -> DEBU 009 endorse upgrade proposal, get response <status:200 message:"OK" payload:"\n\004mycc\022\0031.1\032\004escc\"\004vscc*,\022\014\022\n\010\001\022\002\010\000\022\002\010\001\032\r\022\013\n\007Org1MSP\020\003\032\r\022\013\n\007Org2MSP\020\0032f\n \261g(^v\021\220\240\332\251\014\204V\210P\310o\231\271\036\301\022\032\205fC[|=\215\372\223\022 \311b\025?\323N\343\325\032\005\365\236\001XKj\004E\351\007\247\265fu\305j\367\331\275\253\307R\032 \014H#\014\272!#\345\306s\323\371\350\364\006.\000\356\230\353\270\263\215\217\303\256\220i^\277\305\214: \375\200zY\275\203}\375\244\205\035\340\226]l!uE\334\273\214\214\020\303\3474\360\014\234-\006\315B\031\022\010\022\006\010\001\022\002\010\000\032\r\022\013\n\007Org1MSP\020\001" >
    .
    .
    .
    2018-02-22 18:28:46.693 UTC [chaincodeCmd] upgrade -> DEBU 00c Get Signed envelope
    2018-02-22 18:28:46.693 UTC [chaincodeCmd] chaincodeUpgrade -> DEBU 00d Send signed envelope to orderer
    2018-02-22 18:28:46.908 UTC [main] main -> INFO 00e Exiting.....
    ```

<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.
