Update for beem - steemconnect integration and bug fixes

Repository

https://github.com/holgern/beem

beem is a python library for steem. beem has now 481 unit tests and a coverage of 78 %. The current version is 0.19.33.

I created a discord channel for answering a question or discussing beem: https://discord.gg/4HM592V

Bug Fixes for Race condition in blockchain.blocks() when using threads

• The bug was described in detail here.
• Fix in commit 7c8b53
• The problem was the auto_clean function for the cache.
• When using threads, auto_clean is now disabled with set_cache_auto_clean(False) and the cache is manually cleaned with clear_cache_from_expired_items() when all threads are finished.
  When blocks() finishes, set_cache_auto_clean(auto_clean) is set to the old value.

SteemConnect integration

Inspired by steemconnect-python-client by @emrebeyler, SteemConnect is now integrated into beem.

I created @beem.app inside steemconnect for testing (https://v2.steemconnect.com/apps/).

The following steps were done to integrate steemconnect properly:

1. A new Token class was added to beem/storage
2. The following function were added to beem/wallet:
   • setToken
   • clear_local_token
   • encrypt_token
   • decrypt_token
   • addToken
   • getTokenForAccountName
   • removeTokenFromPublicName
   • getPublicNames
3. a SteemConnect class was created (based on client.py from steemconnect-python-client)
4. Integration into TransactionBuilder and Steem

You see a diff between both functions here (On the left side is client.py shown and on the right side steemconnect.py from beem). White ares indicate that both files are identically.

Usage

beem.steemconnect can be used to create steemconnect links for broadcasting transactions.
In the first example, nobroadcast=True and unsigned=True is used to disable signing and broadcasting. When then a broadcasting operation is called, the unsigned transaction is returned and entered into url_from_tx. This function from SteemConnect returns then a steemconnect v2 link which can be entered into the browser.

from beem import Steem
from beem.account import Account
from beem.steemconnect import SteemConnect
from pprint import pprint
steem = Steem(nobroadcast=True, unsigned=True)
sc2 = SteemConnect(steem_instance=steem)
acc = Account("test", steem_instance=steem)
pprint(sc2.url_from_tx(acc.transfer("test1", 1, "STEEM", "test")))

results in:

'https://v2.steemconnect.com/sign/transfer?from=test&to=test1&amount=1.000+STEEM&memo=test'

It is also possible to create a operation by hand:

from beem import Steem
from beem.transactionbuilder import TransactionBuilder
from beembase import operations
from beem.steemconnect import SteemConnect
from pprint import pprint
stm = Steem()
sc2 = SteemConnect(steem_instance=stm)
tx = TransactionBuilder(steem_instance=stm)
op = operations.Transfer(**{"from": 'test',
                            "to": 'test1',
                            "amount": '1.000 STEEM',
                            "memo": 'test'})
tx.appendOps(op)
pprint(sc2.url_from_tx(tx.json()))

results in:

'https://v2.steemconnect.com/sign/transfer?from=test&to=test1&amount=1.000+STEEM&memo=test'

Creating SteemConnect links with beempy

By adding -l as option, all available broadcast operation can be converted into a link:

beempy -l  claimreward holger80

results in

"https://v2.steemconnect.com/sign/claim_reward_balance?account=holger80&reward_steem=0.048+STEEM&reward_sbd=3.842+SBD&reward_vests=5093.882902+VESTS"

Fetching a steemconnect app token

In examples/login_app, an example app.py can be found. This example was adapted from steemconnect-python-client. Set the client_id, the scope and unlocking the wallet by entering the correct passphrase.

The flask app can be started by

flask run

Enter http://127.0.0.1:5000/ in a browser and click on the link.
After entering a username and password, the generated token is stored in the wallet.

Using the app token for broadcasting via SteemConnect

from beem import Steem
from beem.steemconnect import SteemConnect
from beem.comment import Comment
sc2 = SteemConnect(client_id="beem.app")
steem = Steem(steemconnect=sc2)
steem.wallet.unlock("supersecret-passphrase")
post = Comment("author/permlink", steem_instance=steem)
post.upvote(voter="test")  # replace "test" with your account

Using the app token for broadcasting via SteemConnect in beempy

By adding -s as option, all broadcast operation as upvote are broadcast via Steemconnect

beempy -s  upvote -a test -w 100 @author/permlink

beempy listtoken

This command can be used to show all stored token:

Commit history

Include steemconnect v2 to beem

• commit b95afdf

steem

• add steemconnect in init, when set, steemconnect is used for broadasting

steemconnect

• new class can be used to broadcast operation with steemconnect v2

storage

• Token class to store encrypted token

Transactionbuilder

• use steemconnect broadcast with set in steem

Wallet

• add token storage class
• add setToken, clear_local_token, encrypt_token, decrypt_token, addToken, getTokenForAccountName, removeTokenFromPublicName, getPublicNames

Example

• Add login app for testing steemconnect

Fix issue #16

• commit 7c8b53

Several improvements and fixes

• commit 97711e5

Account

• Example added for transfer

Nodelist

• Doc added

Steem

• steemconnect integration improved and use_sc2 added
• Docu improved

SteemConnect

• compatible with py2.7
• several improvements
• Examles added

Transactionbuilder

• Integration of steemconnect improved
  Wallet
• fix bug

SteemNodeRPC

• fix old and removed parameter n_urls

Doc

• Fix bug in tutorial page

Creating links for signing with SC2

• commit 249bdb4
• url_from_tx function added, which can be used to create url for signing with steemconnect v2
• Authomatic url creation removed

Add option to create url from all broadcast operation to beempy

• commit 8b949d

CLI

• Add -l option to beempy
• Add -s option for broadcast via steemconnect
• addtoken, listtoken and deltoken added
• Add doc - files for nodelist, steemconnect and node

Storage

• sc2_scope removed from config
• hot_sign_redirect_uri added to config

Some improvements for steemconnect

• commit e21be76
• Converts amounts from list to string (appbase)
• Unit test for steemconnect added

Transactionbuilder

• Remove log line

GitHub Account

https://github.com/holgern