zbox - a CLI for 0Chain dStorage

zbox is a command line interface (CLI) tool to understand the capabilities of 0Chain dStorage and prototype your app. The utility is built using 0Chain's goSDK library written in Go. Check out a video on how to use the CLI to create an allocation (storage volume) and upload, download, update, delete, and share files and folders to dStor on the 0Chain dStorage platform.

Features

zbox supports the following features

1. Register a Wallet
2. Create an allocation
3. Update an allocation
4. Upload a file to dStorage
5. Download the uploaded file from dStorage
6. Update the uploaded file on dStorage
7. Delete the uploaded file on dStorage
8. Share the uploaded file on dStorage to the public
9. List the uploaded files and folders
10. Copy uploaded files to another folder path on dStorage
11. Upload encrypted files to dStorage
12. Share an encrypted file using proxy re-encryption (PRE) with your friend
13. List allocations
14. Sync your local folder to remote
15. Get wallet information
16. Get Allocation info
17. Get meta data of files
18. Rename an object in allocation
19. Get file stats
20. Repair a file on dStorage
21. Cancel allocation
22. Finalize allocation
23. Challenge pool information
24. List blobbers
25. Read pool
26. Storage SC configurations
27. Stake pool
28. Write pool
29. Costs
30. Blobber
31. Move uploaded files to another folder path on dStorage
32. Add Collaborator for a file
33. Remove Collaborator for a file

zbox CLI provides a self-explaining "help" option that lists commands and parameters they need to perform the intended action

How to get it?

git clone https://github.com/0chain/zboxcli.git

Pre-requisites

Go V1.12 or higher.

How to build on Linux

How to build on Windows

Alternative Platform Builds

Getting started with zbox

Before you start

Before you start playing with zbox, you need to access the blockchain. Go to network folder in the repo, and choose a network. Copy it to your ~/.zcn folder and then rename it as config.yaml file.

mkdir ~/.zcn
cp network/one.yaml ~/.zcn/config.yaml

Sample config.yaml

  ---
  block_worker: http://localhost:9091
  signature_scheme: bls0chain
  min_submit: 50 # in percentage
  min_confirmation: 50 # in percentage
  confirmation_chain_length: 3

We use blockWorker to connect to the network instead of giving network details directly, It will fetch the network details automatically from the blockWorker's network API.

Override Network Details

By default it will use the miner/sharder values which it will get using the block_worker_url/network. In case you want to override those values and give custom miner/sharder to use, You can create a network.yaml in your ~/.zcn (config) folder and paste the miner/sharder values in below format.

miners:
  - http://localhost:7071
  - http://localhost:7072
  - http://localhost:7073
sharders:
  - http://localhost:7171

Note: This is also useful for the Mac OS users running local cluster and having trouble with docker internal IPs (block_worker return docker IPs in local)

Setup

The zbox command line uses the ~/.zcn/config.yaml file at runtime to point to the network specified in that file.

Commands

Note in this document, we will show only the commands, response will vary depending on your usage, so may not be provided in all places.

Command with no arguments

When you run zbox with no arguments, it will list all the supported commands.

Command

./zbox

Response

0Box is a decentralized storage application written on the 0Chain platform.
			Complete documentation is available at https://0chain.net

Usage:
  zbox [command]

Available Commands:
    alloc-cancel      Cancel an allocation
    alloc-fini        Finalize an expired allocation
    bl-info           Get blobber info
    bl-update         Update blobber settings by its delegate_wallet owner
    copy              copy an object(file/folder) to another folder on blobbers
    cp-info           Challenge pool information.
    delete            delete file from blobbers
    download          download file from blobbers
    get               Gets the allocation info
    get-download-cost Get downloading cost
    get-upload-cost   Get uploading cost
    getwallet         Get wallet information
    help              Help about any command
    list              list files from blobbers
    listallocations   List allocations for the client
    ls-blobbers       Show active blobbers in storage SC.
    meta              get meta data of files from blobbers
    move              move an object(file/folder) to another folder on blobbers
    newallocation     Creates a new allocation
    register          Registers the wallet with the blockchain
    rename            rename an object(file/folder) on blobbers
    rp-create         Create read pool if missing
    rp-info           Read pool information.
    rp-lock           Lock some tokens in read pool.
    rp-unlock         Unlock some expired tokens in a read pool.
    sc-config         Show storage SC configuration.
    share             share files from blobbers
    sp-info           Stake pool information.
    sp-lock           Lock tokens lacking in stake pool.
    sp-pay-interests  Pay interests not payed yet.
    sp-unlock         Unlock tokens in stake pool.
    sp-user-info      Stake pool information for a user.
    start-repair      start repair file to blobbers
    stats             stats for file from blobbers
    sync              Sync files to/from blobbers
    update            update file to blobbers
    updateallocation  Updates allocation's expiry and size
    upload            upload file to blobbers
    version           Prints version information
    wp-info           Write pool information.
    wp-lock           Lock some tokens in write pool.
    wp-unlock         Unlock some expired tokens in a write pool.
    update-attributes Update file attributes.


Flags:
      --config string      config file (default is config.yaml)
      --configDir string   configuration directory (default is $HOME/.zcn)
  -h, --help               help for zbox
      --verbose            prints sdk log in stderr (default false)
      --wallet string      wallet file (default is wallet.json)

Use "zbox [command] --help" for more information about a command.

Register

Command register registers a wallet that will be used both by the blockchain and blobbers, and is created in the ~/.zcn directory. If you have created a wallet with another network, you will need to remove and recreate it. If you want to create multiple wallets with multiple allocations, make sure you store the wallet information. zbox uses the keys in ~/.zcn/wallet.json when it executes the commands.

Command

 ./zbox register

Response

ZCN wallet created
Wallet registered

Create new allocation

Command newallocation reserves hard disk space on the blobbers. Let's see the parameters it takes by using --help

Command

./zbox newallocation --help

Response

Creates a new allocation

Usage:
  zbox newallocation [flags]

Flags:
      --allocationFileName string   --allocationFileName allocation.txt (default "allocation.txt")
      --data int                    --data 2 (default 2)
      --expire duration             duration to allocation expiration (default 720h)
  -h, --help                        help for newallocation
      --lock string                 lock write pool with given number of tokens, or use 'auto' (default "0")
      --mcct duration               max challenge completion time, optional, default 1 hour
      --parity int                  --parity 2 (default 2)
      --read_price string           select blobbers by provided read price range, use form 0.5-1.5, default is [0; inf)
      --size int                    --size 10000 (default 2147483648)
      --write_price string          select blobbers by provided write price range, use form 1.5-2.5, default is [0; inf)

Global Flags:
      --config string      config file (default is config.yaml)
      --configDir string   configuration directory (default is $HOME/.zcn)
      --verbose            prints sdk log in stderr (default false)
      --wallet string      wallet file (default is wallet.json)

As you can see the newallocation command takes allocationFileName where the volume information is stored locally. All the parameters have default values. With more data shards, you can upload or download files faster. With more parity shards, you have higher availability.

Usage

Create a new allocation with default values. If you have not registered a wallet, it will automatically create a wallet. The newallocation also, on success, creates related write pool. Use --lock flag to add some tokens to the pool in the transaction.

Command

./zbox newallocation

Response

Allocation created : d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Also, the allocation information is stored under $Home/.zcn/allocation.txt

Update allocation

Command updateallocation updates hard disk space and expiry on the blobbers. Let's see the parameters it takes by using --help

Command

./zbox updateallocation --help

Response

Updates allocation's expiry and size

Usage:
  zbox updateallocation [flags]

Flags:
      --allocation_id string   allocation ID
      --expiry duration        adjust storage expiration time, duration (default 720h)
  -h, --help                   help for updateallocation
      --size int               adjust allocation size, bytes (default 2147483648)

Global Flags:
      --config string      config file (default is config.yaml)
      --configDir string   configuration directory (default is $HOME/.zcn)
      --verbose            prints sdk log in stderr (default false)
      --wallet string      wallet file (default is wallet.json)

Usage

Create a new allocation with default values. If you have not registered a wallet, it will automatically create a wallet.

Command

./zbox updateallocation --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Response

Allocation updated with txId : fb84185dae620bbba8386286726f1efcd20d2516bcf1a448215434d87be3b30d

You can see more txn details usin above txID in block explorer.

Finalize and expired allocation

Finalize an expired allocation. It makes sure all blobbers has got min_lock_demand, unlocks all related pools. Moves tokens from write pool to allocation owner.

 ./zbox finialloc --allocaiton <allocaiton_id>

Upload

Use upload command to upload a file. By using help for this command, you will see it takes parameters:

• --allocation -- the allocation id from the newallocation command
• --localpath -- absolute path to the file on your local system
• --remote path -- remote path where you want to store. It should start with "/"
• --thumbnailpath -- Local thumbnail path of file to upload
• --encrypt -- [OPTIONAL] pass this option to encrypt and upload the file
• --commit -- [OPTIONAL] pass this option to commit the metadata transaction
• --attr-who-pays-for-reads [OPTIONAL] set payer for downloads; default is 3rd_party, it can be 'owner' or '3rd_party'

Command

./zbox upload --localpath <absolute path to file>/hello.txt --remotepath /myfiles/hello.txt --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Response

Status completed callback. Type = application/octet-stream. Name = hello.txt

with --encrypt

Use upload command with optional encrypt parameter to upload a file in encrypted format. This can be downloaded as normal from same wallet/allocation or utilize Proxy Re-Encryption facility (see download command).

Command

./zbox upload --encrypt --localpath <absolute path to file>/sensitivedata.txt --remotepath /myfiles/sensitivedata.txt --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Response

Status completed callback. Type =

Download

Use download command to download your own or a shared file.

• --allocation string Allocation ID
• --commit Pass this option to commit the metadata transaction
• --authticket string Auth ticket fot the file to download if you dont own it
• --localpath string Local path of file to download
• --lookuphash string [OPTIONAL] The remote lookuphash of the object retrieved from the list
• --remotepath string Remote path to download
• -t, --thumbnail pass this option to download only the thumbnail
• -e, --endblock int pass this option to download till specific block number
• -s, --startblock int pass this option to download from specific block number
• --rx_pay used to download by authticket; pass true to pay for download yourself

Command

./zbox download --authticket 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 --allocation 3c0d32560ea18d9d0d76808216a9c634f661979d29ba59cc8dafccb3e5b95341 --remotepath /myfiles/horse.jpeg --lookuphash 41865f0c6aaa5713ed391ebdf822552fc6cfb59a87a2616828242ba3ca0dce49 --localpath ../horse.jpeg

Note: You can download by using only 1 on the below combination

• --remotepath , --allocation
• --authticket

Response

Downloaded file will be in the localpath specified.

Update

Use update command to update content of an existing file in the remote path. Similar to upload command.

Delete

Use delete command to delete your file on allocation. --allocation string Allocation ID --commit Pass this option to commit the metadata transaction --remotepath string Remote path to download Command

./zbox delete --allocation 3c0d32560ea18d9d0d76808216a9c634f661979d29ba59cc8dafccb3e5b95341 --remotepath /myfiles/horse.jpeg

Response

File successfully deleted (Can be verified using list)

Share

Use share command to generate an authtoken that provides authorization to the holder to the specified file on the remotepath. --allocation string Allocation ID --clientid string ClientID of the user to share with. Leave blank for public share --encryptionpublickey string Encryption public key of the client you want to share with (from getwallet command ) --remotepath string Remote path to share

Command

./zbox share --allocation 3c0d32560ea18d9d0d76808216a9c634f661979d29ba59cc8dafccb3e5b95341 --remotepath /myfiles/hello.txt

share-encrypted

Use clientid and encryptionpublickey of the user to share with.

Command

./zbox share --allocation 3c0d32560ea18d9d0d76808216a9c634f661979d29ba59cc8dafccb3e5b95341 --remotepath /myfiles/hello.txt --clientid d52d82133177ec18505145e784bc87a0fb811d7ac82aa84ae6b013f96b93cfaa --encryptionpublickey +BV37Ip05OdHo+Sz4N8xgCrACCUOVLnQICU1IiJq8uU=

Response

Response contains auth token an encrypted string that can be shared.

List

Use list command to list files in given path. By using help for this command, you will see it takes parameters:

• --allocation string --Allocation ID
• --remotepath string --Remote path to list from (Required for --allocation)
• --authticket string --Auth ticket fot the file to download if you dont own it
• --lookuphash string --The remote lookuphash of the object retrieved from the list

Command

./zbox list --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac --remotepath /myfiles

Response

Response will be a list with information for each file/folder in the given path. The information includes lookuphash which is require for download via authticket (Optional file list in json format)

Copy

Use copy command to copy file to another folder path in dStorage. By using help for this command, you will see it takes parameters:

• --allocation string --Allocation ID
• --destpath string Destination path for the object. Existing directory the object should be copied to.
• --remotepath string Remote path of object to copy

Command

./zbox copy --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac --remotepath /file.txt --destpath /existingFolder/file.txt

Move

Use move command to move file to another folder path in dStorage. By using help for this command, you will see it takes parameters:

• --allocation string --Allocation ID
• --destpath string Destination path for the object. Existing directory the object should be copied to.
• --remotepath string Remote path of object to move

Command

./zbox move --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac --remotepath /file.txt --destpath /existingFolder/file.txt

List allocations

Use list allocations command to list all allocations for a client.

Command

./zbox listallocations

Response

Response will be table format output in which all of your allocations will be listed with their ID, SIZE, EXPIRATION, DATASHARDS and PARITYSHARDS

Sync

Sync command helps to sync all files in localfolder recursively to remote.

Command

./zbox sync --help

Response

Sync all files to/from blobbers from/to a localpath

Usage:
  zbox sync [flags]

Flags:
      --allocation string         Allocation ID
      --commit                    pass this option to commit the metadata transaction - only works with     uploadonly
      --excludepath stringArray   Remote folder paths exclude to sync
  -h, --help                      help for sync
      --localcache string         Local cache of remote snapshot.
                                  If file exists, this will be used for comparison with remote.
                                  After sync complete, remote snapshot will be updated to the same file for next    use.
      --localpath string          Local dir path to sync
      --uploadonly                pass this option to only upload/update the files

Global Flags:
      --config string      config file (default is config.yaml)
      --configDir string   configuration directory (default is $HOME/.zcn)
      --verbose            prints sdk log in stderr (default false)
      --wallet string      wallet file (default is wallet.json)

Usage

Command

./zbox sync --localpath /myLocalFolder --remotepath / --allocation 06e227bc283cb9ebc98c164f8f3fd4f02e70f76ec93cb8b41b276146db3f329f --localcache /someFolder/Localcache.txt

Response

It will sync your localpath with the remote and do all the requried CRUD operations.

Get wallet

Use command get to get additional wallet information including Encryption Public Key required for Proxy Re-Encryption.

Command

./zbox getwallet

Response

Response will give details for current selected wallet (or wallet file specified by optional --wallet parameter)

Get

Use command get to get the information about the allocation like total size of the allocation, used size, number of challenges and the result of that, etc.

Command

./zbox get --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Response

Response will have information about blobbers allocated and stats for the allocation. Stats contain important information about the size of the allocation, size used, number of write markers, and challenges passed/failed/open/redeemed

Get metadata

Use command meta to get meta data for the given remote file. Use with help to know more about possible flags.

• --allocation string -- Allocation ID
• --authticket string -- Auth ticket fot the file to download if you dont own it
• --lookuphash string -- The remote lookuphash of the object retrieved from the list
• --remotepath string -- Remote path to list from

Command

./zbox meta --allocation 0834e2848e3006714423f485cfc1c22266368d655026152bd762cd0cdd0a4aeb --remotepath /file.txt

With authticket

./zbox meta --authticket <authticket in encoded hash string> --lookuphash <optional>

Response

Response will be meta data for the given filepath/lookuphash (if using authTicket)

Rename

rename command helps in renaming a file already exists in dStorage.

• --allocation string -- Allocation ID
• --destname string -- New Name for the object (Only the name and not the path). Include the file extensio*if applicable
• --remotepath string -- Remote path of object to rename

Command

./zbox rename -- allocation 0834e2848e3006714423f485cfc1c22266368d655026152bd762cd0cdd0a4aeb --remotepath /file1.txt --destname file2.txt

Stats

stats command helps in getting upload, download and challenge information on a file.

Command

./zbox stats --allocation 3c0d32560ea18d9d0d76808216a9c634f661979d29ba59cc8dafccb3e5b95341 --remotepath /myfiles/horse.jpg

Repair

Use repair command to repair a file. By using help for this command, you will see it takes parameters:

• --allocation -- the allocation id from the newallocation command
• --localpath -- absolute path to the file on your local system
• --remote path -- remote path where you want to store. It should start with "/"

Command

./zbox repair --localpath <absolute path to file>/hello.txt --remotepath /myfiles/hello.txt --allocation d0939e912851959637257573b08c748474f0dd0ebbc8e191e4f6ad69e4fdc7ac

Response

Status completed callback. Type = application/octet-stream. Name = hello.txt

Add collaborator

Use command add-collab to add a collaborator for a file

• --allocation string -- Allocation ID
• --collabid string -- Collaborator's clientID
• --remotepath string -- Remote path to list from

Command

./zbox add-collab --allocation 0834e2848e3006714423f485cfc1c22266368d655026152bd762cd0cdd0a4aeb --remotepath /file.txt
--collabid 271aeadc4c5f909ad967fa62fbeb261aaca48aec90ddbf9b48f269cebde623c7

Response

Response will be a confirmation that collaborator is added on all blobbers for the given file You can check all collaborators for a file in metadata json response

Delete collaborator

Use command delete-collab to remove a collaborator for a file

• --allocation string -- Allocation ID
• --collabid string -- Collaborator's clientID
• --remotepath string -- Remote path to list from

Command

./zbox delete-collab --allocation 0834e2848e3006714423f485cfc1c22266368d655026152bd762cd0cdd0a4aeb --remotepath /file.txt
--collabid 271aeadc4c5f909ad967fa62fbeb261aaca48aec90ddbf9b48f269cebde623c7

Response

Response will be a confirmation that collaborator is removed on all blobbers for the given file

Cancel allocation

Cancel allocation immediately and return all tokens from challenge pool back to user (to write pool). This case blobber will not give their min lock demand. If blobbers already got some tokens, the tokens will not be returned.

It returns tokens to user's write pool, creating one expired if necessary.

./zbox alloc-cancel --allocation ALLOCATION_ID

Finalize allocation

Finalize an expired allocation. When allocation expired, after its challenge completion time (after the expiration) an allocation can be finalized by owner or one of allocation blobbers.

  ./zbox alloc-fini --allocation ALLOCATION_ID

Challenge pool information

Challenge pool brief information.

  ./zbox cp-info --allocation ALLOCATION_ID

Example

    BALANCE    |             START             |            EXPIRE             | FINIALIZED
+--------------+-------------------------------+-------------------------------+------------+
  0.0039020457 | 2020-04-24 03:54:35 +0400 +04 | 2020-04-26 03:56:35 +0400 +04 | false

Where time bounds and the finalization are allocations related. Balance is current challenge pool balance.

List blobbers

Show active blobbers in storage SC.

  ./zbox ls-blobbers

Read pool

Create

Create read pool if missing.

  ./zbox rp-create

Info

Read pool information.

  ./zbox rp-info

Filtering result for an allocation.

  ./zbox rp-info --allocation ALLOCATION_ID

Lock

Lock some tokens in read pool associated with an allocation. The tokens will be divided between allocation blobbers by their read price.

  ./zbox rp-lock --allocation ALLOCATION_ID --duration 40m --tokens 1

Unlock

Unlock an expired read pool by pool id. See rp-info for the POOL_ID and the expiration.

  ./zbox rp-unlock --pool_id POOL_ID

Storage SC configurations

Show storage SC configuration.

  ./zbox sc-config

Stake pool

Stake pool related commands.

Info

Stake pool information and settings.

  ./zbox sp-info --blobber_id BLOBBER_ID

Lock

Lock crates delegate pool for current client and given blobber. The tokens locked for the blobber stake and can be unlocked any time, excluding where the tokens held by opened offers. The tokens collect interests.

  ./zbox sp-lock --blobber_id BLOBBER_ID --tokens 1.0

Unlock

Unlock a stake pool by pool owner.

  ./zbox sp-unlock --blobber_id BLOBBER_ID --pool_id POOL_ID

User pools.

Get information about all stake pools of current user.

  ./zbox sp-user-info

Pay interests

Some changes in stake pool pays all pending rewards to calculate next rewards correctly and don't complicate stake pool. But if there is no changes interests will not be payed. The sp-pay-interests can be used to pay the interests. The command never fails. It pays interests for all delegates. Use sp-info to check interests can be payed.

  ./zbox sp-pay-interests --blobber_id BLOBBER_ID

Write pool

Info

Write pool information.

For all write pools.

  ./zbox wp-info

Filtering by allocation.

  ./zbox wp-info --allocation ALLOCATION_ID

Lock

Lock tokens in a write pool associated with an allocation. All tokens will be divided between allocation blobbers depending on their write price.

  ./zbox wp-lock --allocation ALLOCATION_ID --duration 40m --tokens 1

Unlock

Unlock an expired write pool by its POOL_ID. See wp-info for the id and the expiration. An expired write pool, associated with an allocation, can be locked until allocation finalization even if it's expired. It possible in cases where related blobber doesn't give their min lock demands. The finalization will pay the demand an unlock the pool.

  ./zbox wp-unlock --pool_id POOL_ID

Costs

Download cost.

How much a remote file downloading.

  ./zbox get-download-cost --allocation ALLOC_ID --remotepath /path/file.ext

Also, there are authticket and lookuphash flags to get the cost for non allocation owners.

Upload cost.

How much a local file uploading.

./zbox get-upload-cost --allocation ALLOC_ID --localpath ./path/file.ext

Blobbers

Detailed blobber information

Get blobber detailed information.

./zbox bl-info --blobber_id BLOBBER_ID

Update blobber settings

Update blobber settings.

./zbox bl-update --blobber_id BLOBBER_ID [settings to update]

Use ./zbox bl-update --help to get list of setting can be updated.

Update file attributes

Update file attributes.

./zbox update-attributes --allocation ALLOC_ID --remotepath=/dir/file.txt \
    --who-pays-for-reads=3rd_party

Only one attribute is currently supported: who-pays-for-reads that can be:

• owner, where allocation owner pays for own and 3rd_party reads
• 3rd_party, where 3rd party readers pays for their downloads themselves

---

Streaming

Since zboxcli is wrapper to gosdk methods, streaming feature should be implemented together with player for each platforms (Android, IOS, Mac, Windows).

IOS documentation: https://github.com/0chain/0box-ios

Android documentation: https://github.com/0chain/0boxAndroid

Mac documentation: https://github.com/0chain/0BoxSyncMac

For platforms using zboxcli commands, implementation are similar to platforms above, i.e.:

1. Download file with downloadFileByBlocks method
2. Read chunked files to byte array (inputstream)
3. Add byte array to custom media source of player

Improvements was done in

downloadFileByBlocks - properly returns file-chunks with correct byte range, gosdk v1.2.4 and above only.

getFileMeta - returns actuaBlockNumbers and actualFileSize (exclude thumbnail size)

getFileMetaByAuth - same updates as getFileMeta

listAllocation - returns actuaBlockNumbers and actualFileSize (exclude thumbnail size)

Troubleshooting

1. Both rp-info and rp-lock are not working.

./zbox rp-info
Failed to get read pool info: error requesting read pool info: consensus_failed: consensus failed on sharders

This can happen if read pool is not yet created for wallet. Read pool is usually created when new wallet is created by zbox or zwallet. However, if wallet is created through zwallet recoverwallet, read pool may not have been created. Simply run zbox rp-create