bigchaindb/bigchaindb

The blockchain database

triptisamal

@triptisamal

Hi all, I am new to bigchaindb. When I try to start service tendermint (sudo docker-compose up -d bigchaindb), I get an error : "from github.com.tendermint.tendermint.crypto.merkle import merkle_pb2 as github_dot_com_dot_tendermint_dot_tendermint_dot_crypto_dot_merkle_dot_merkle__pb2
ModuleNotFoundError: No module named 'github.com.tendermint.tendermint'
ERROR: Service 'bigchaindb' failed to build: The command '/bin/sh -c bigchaindb -y configure' returned a non-zero code: 1"

What could be the issue?Any help is appreciated.

SyedSuhail753

@SyedSuhail753

Hi all,I have set up bigchain db ,mongdb and tenderment by this link https://docs.bigchaindb.com/projects/server/en/latest/simple-deployment-template/set-up-node-software.html . When I start bigchaindb with command bigchaindb start Iam getting this error(screenshot below given)

pdelgadohurtado

@pdelgadohurtado

Hi !

@zzappie Thanks !

@zzappie i have another question, how do you ensure that the underlying database cant be changed from a local user ?

i want to try a similar architecture but with a relational database

saksham verma

@sksvsp16_gitlab

Hi everyone ! i want to search transaction using transaction id that is generated after asset being transferred . ( using nodejs ) any solution?

Oswaldo Neto

@oswaldocostaneto

@pdelgadohurtado , This is a basic thing for Blockchain. The fact that there is Hash control between the blocks (pointing to the hash of the previous block), prevents inadvertent changes in the database locally. If you want, do a test: Manually modify a transaction in the database and, later, search for it through its ID in the transaction search engine available through the BigchainDB API.

@sksvsp16_gitlab , You can do any type of query with MongoDB engines. Just search for the ID in the TRANSACTIONS collection.

pdelgadohurtado

@pdelgadohurtado

@oswaldocostaneto im talking about the UNDERLYING database. AFAI BigchainDB uses MongoDB internally, i want to know, what happen if an user can modify locally Mongodb, and alter the register somehow...

amartinetra

@amartinetra

Hi everyone! I have run bigchaindb with all-in-one docker (https://docs.bigchaindb.com/projects/server/en/latest/appendices/all-in-one-bigchaindb.html)

What I´m trying to do now, is to connect with the mongo database of the docker container, but I am not beeing able. The URI I use is : mongodb://{hostname}/bigchain. But I get connection refused error. Can anyone help me? thanks!

Sorry, the last uri is wrong, which I am specifying is mongodb://{hostname}:27017/bigchain

Blesson

@blessonvarghese

Hi, I am quite new to bigchaindb and am trying to get https://github.com/RiddleAndCode/bigchaindb-c-driver/ installed. When I run make, I get the following error: "ld: library not found for -lgcov
clang: error: linker command failed with exit code 1" and also for -lasan. Would anyone know how this can be resolved? Thanks in advance.

BruceChen1995

@BruceChen1995

Hello All,is there anything like fabric channel in bigchaindb that only allow permissioned non-validators to sync state?

Thomas Olofsson

@thomas148_gitlab

General Question: Is there any type definitions made for the bigchaindb js driver. Trying to use it from es6 typescript with some problems

Thomas Olofsson

@thomas148_gitlab

is the bigchaindb project abandoned?

Majd Turfa

@MajdT51_gitlab

I think not

David Dashyan

@zzappie

@blessonvarghese I'm not familiar with c driver but I think you just need to use gcc toolchain since gcov is part of it.

Hey @pdelgadohurtado :) Bigchaindb is synced trough tendermint. Tendermint provides consensus mechanism to ensure all nodes agree on current state

@thomas148_gitlab It just much less active than It used to be since the core team switched to work on Ocean Protocol

Sergiu Popescu

@sergiupopescu199

Hi! I'm new to BigchainDB but I'm really want to learn it. I have some issue creating a BigchainDB network, can anyone help me? And yes I read the documentation. Is there a way to ad a BigchainDB node without shitting down all the nodes? Thanks in advance

Alagie Sellu

@alagiesellu

Hello everyone,
I am a BSc Computer Science graduate from University of The Gambia where am currently working as a software developer. It's a young university founded in 1999.
My interest is mainly around security and trust. Which direct me towards Blockchain technology use to address corruption and promote good governance.
My the computer science department at my university is relatively small and don't have any expert in the area of blockchain. Looking for a supervisor to help me pursuit my research interest.

Diego Torres

@diegotorreslopez_gitlab

hi there! I'm having an issues installing js drivers, always the same error for bigchaindb-driver and bip39...

anyone can help, please?

michelescarlato

@michelescarlato

Does anyone knows if it is possible to store more transactions in a block?

So far I understood that for each transaction generated, 1 block is created.|

Hyperledger Fabric claims to achieve a throughput of 3,500 transactions per second, which is clearly not achievable if in BigchainDB we create a block for each transaction.

Xjun

@XjunOMG

Hi everyone, Is development in bigchaindb is stopped ? Because, there are no updates in any platform.

corlys

@corlys

Is there any video tutorials how to setup bigchaindb from the ground up?

Abhishek

@abhishe57732197_twitter

Hello everyone,
I am having issue in transferTransaction functionality in bgchaindb,getting response - {"error": true,"message": "HTTP Error: Requested page not reachable","data": null }
and in bigchaindb-errors.logs, error is as -
HTTP API error: 400 - POST:/api/v1/transactions - Invalid transaction (InvalidSignature): Transaction signature is invalid. (bigchaindb_webapi - pid: 12335).
Note - makeTransferTransaction and signTransaction functions are giving output fine but getting error in this function - connection.postTransactionCommit(txTransferSigned).
Also,get and create transaction are woking fine too.
Can anyone help me on this?

cass

@z3ky

Hi, I've successfully set up my first BigchainDB to evaluate BDB to be used in a distributed manufacturing execution system. Tamper-proof data and transaction are very important for our use case. How can I detect database level manipulations of assets or transactions? In the docs I read that e.g. watchdogs could be used for this purpose, is this already implemented?

Pavan Vora

@pavan_vora_twitter

Guys anyone has any idea if it is possible to enter custom logic in BigchainDB where we can validate and store only transactions which have certain fields and valid data?

javaandra

@javaandra

Hi everyone! Maybe someone can help. I have set up a BigchainDB node manually on a Ubuntu 20.04.1 LTS virtual machine. Mongodb is running. I haven't added any peers or validators in Tendermint config.toml and genesesis.json yet, to ease the troubleshooting. When I start the Mongodb and Tedermint services and monitor them with monit -d 1, status and summarry look all OK. In bigchaindb.log the last message is "[INFO] (abci.app) ABCIServer started on port: 26658". No errors in bigchaindb-errors.log. In tendermint.err.log I get "ERROR: Failed to create node: Error during handshake: Error calling Info: read tcp 127.0.0.1:48942->127.0.0.1:26658: read: connection reset by peer" and the service keeps trying to restart. At this point I am stuck and don't know how to troubleshoot. netstat -tunlp is showing at first that bigchaindb is listening on port 26658, but short after the process disappears. Any hint is appreciated. Thanks!

SeanSan

@shawnwong84

Hello. Does anyone successfully creates bigchaindb on docker with SSL?

Jürgen Eckel

@eckelj

@abhishe57732197_twitter sure, can you post a code snippet? transfers work on asset base and is only possible for asset integers not for fractoins of an asset.

Jürgen Eckel

@eckelj

@z3ky nice! BigchainDB is a Tendermint aplication. It is usually build up by multiple nodes. the decentralized way of verifying the integrity of the data is to ask other nodes of the network for their values/data. having that, you can compare it (as a user). The other option is to verify all the blocks of the node from it genesis.

@pavan_vora_twitter yes, this is possible, you can extend cryptoconditions. This is from my point of view the best point to start doing this.

@shawnwong84 yes, multiple times. just read the following lines http://docs.bigchaindb.com/en/latest/installation/node-setup/set-up-nginx.html

Bancambios.com

@bancambios_twitter

how can a project implement this tech?

Dmitry I

@prioritylabs_gitlab

Hey guys. I am researching BCDB possible application
came to this post
https://www.reddit.com/r/Bitcoin/comments/4j7wjf/bigchaindb_a_prime_example_of_blockchain_bullshit/
this post is very old (2016) maybe a lot of changed after that

can someone guide me how this was addressed in the end?

But BigchainDB's architecture is fundamentally flawed. All BigchainDB nodes, by design, connect to a single RethinkDB cluster. (RethinkDB is a distributed NoSQL database, kinda like MongoDB but better.) If something bad happens to that RethinkDB cluster, the whole blockchains goes down.

Dmitry I

@prioritylabs_gitlab

another question: is there any "blockchain explorer" for this BCDB?

Alex Puig

@alexpuig

In a private network is there any way to protect CREATE transactions and allow for TRANSFER ones? Maybe only nodes can do CREATE and force clients to go through a gateway and allow only TRANSFER? Is there any difference in the HTTP POST call we could use to filter?

amiranviam

@amiranviam

ERROR: Failed to create node: Error during handshake: Error calling Info: EOF when trying tendermint start and on bigchaindb server segmentation fault error

Akash Pateria

@Akash-Pateria

If I have several clients subscribed to a BCDB node's WebSocket server, and that node goes offline and comes back up, would it lose all the subscribers? If so, what should the clients do to avoid the response message loss?

Sergiu Popescu

@sergiupopescu199

could someone tell me how to use upsert-validator argument on bigchaindb? I have an existing 3 node setup and I want to add another node and to make it join to the network, and I in the docs they say that wothout shutting down the whole network we could use upsert-validator? I can't make it work, can anyone help me? thanks in advance

Naveen Gajjala

@Naveen_Gajjala_gitlab

Hii everyone ,iam new to bigchaindb .According to bigchaindb docs the assets are immutable.But from mongodb compass i can change the asset manually.So ,while retreiving how to know whether data has been modified or not.

Paul Hedges

@Paul-Hedges

Hello; my team and I are currently looking to transition from locally stored flat files with our wallet and chain to utilizing bigchainDB; everything has been going fine thus far and I'm not sure if we will run into issues. However I was looking to see if there is anyone around here with experience utilizing the software specifically that we can bounce questions off real-time when the conversion takes place.

The "Amount" in our system is a little unique than most in it isn't currency, however all other aspects follow a typical blockchain deployment.

rupam150

@rupam150

hi @ttmc i tried to execute the code (sent_creation_tx = bdb.transactions.send_commit(fulfilled_creation_tx) but a timeout error is appearing in the screeen TimeoutError Traceback (most recent call last)

<ipython-input-26-6495e0171e3f> in <module>
----> 1 sent_creation_tx = bdb.transactions.send_commit(fulfilled_creation_tx)
/opt/anaconda3/envs/blockchain/lib/python3.8/site-packages/bigchaindb_driver/driver.py in send_commit(self, transaction, headers)
368
369 """
--> 370 return self.transport.forward_request(
371 method='POST',
372 path=self.path,
/opt/anaconda3/envs/blockchain/lib/python3.8/site-packages/bigchaindb_driver/transport.py in forward_request(self, method, path, json, params, headers)
73 start = time()
74 try:
---> 75 response = connection.request(
76 method=method,
77 path=path,
/opt/anaconda3/envs/blockchain/lib/python3.8/site-packages/bigchaindb_driver/connection.py in request(self, method, path, json, params, headers, timeout, backoff_cap, **kwargs)
74
75 if timeout is not None and timeout < backoff_timedelta:
---> 76 raise TimeoutError
77
78 if backoff_timedelta > 0:
TimeoutError: T The bdb url i am using is bdb_root_url = ‘http://18.222.232.169’ ( where i have hosted the Bigchaindb server ) please help

rupam150

@rupam150

hi @ttmc i also tried to host a election from one node of my system and executed bigchaindb election new upsert-validator HHG0IQRybpT6nJMIWWFWhMczCLHt6xcm7eP52GnGuPY= 1 fb7140f03a4ffad899fabbbf655b97e0321add66 --private-key /home/user/.tendermint/config/priv_validator.json b but an error popped up showing ---- raise ValueError(‘recipients list cannot be empty’)
ValueError: recipients list cannot be empty How to solve it??

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