def deploy_tokens_and_fund_accounts(
    token_amount: int,
    number_of_tokens: int,
    deploy_service: BlockChainService,
    participants: typing.List[typing.Address],
    contract_manager: ContractManager,
) -> typing.List[typing.TokenAddress]:
    """ Deploy `number_of_tokens` ERC20 token instances with `token_amount` minted and
    distributed among `blockchain_services`. Optionally the instances will be registered with
    the raiden registry.

    Args:
        token_amount (int): number of units that will be created per token
        number_of_tokens (int): number of token instances that will be created
        deploy_service (BlockChainService): the blockchain connection that will deploy
        participants (list(address)): participant addresses that will receive tokens
    """
    result = list()
    for _ in range(number_of_tokens):
        token_address = deploy_contract_web3(
            CONTRACT_HUMAN_STANDARD_TOKEN,
            deploy_service.client,
            contract_manager=contract_manager,
            constructor_arguments=(token_amount, 2, "raiden", "Rd"),
        )

        result.append(token_address)

        # only the creator of the token starts with a balance (deploy_service),
        # transfer from the creator to the other nodes
        for transfer_to in participants:
            deploy_service.token(token_address).transfer(
                to_address=transfer_to, amount=token_amount // len(participants)
            )

    return result
def save(self, verbosity=1, *args, **kwargs):
        connection = connections[get_tenant_database_alias()]
        is_new = self.pk is None
        has_schema = hasattr(connection, 'schema_name')
        if has_schema and is_new and connection.schema_name != get_public_schema_name():
            raise Exception("Can't create tenant outside the public schema. "
                            "Current schema is %s." % connection.schema_name)
        elif has_schema and not is_new and connection.schema_name not in (self.schema_name, get_public_schema_name()):
            raise Exception("Can't update tenant outside it's own schema or "
                            "the public schema. Current schema is %s."
                            % connection.schema_name)

        super().save(*args, **kwargs)

        if has_schema and is_new and self.auto_create_schema:
            try:
                self.create_schema(check_if_exists=True, verbosity=verbosity)
                post_schema_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
            except Exception:
                # We failed creating the tenant, delete what we created and
                # re-raise the exception
                self.delete(force_drop=True)
                raise
        elif is_new:
            # although we are not using the schema functions directly, the signal might be registered by a listener
            schema_needs_to_be_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
        elif not is_new and self.auto_create_schema and not schema_exists(self.schema_name):
            # Create schemas for existing models, deleting only the schema on failure
            try:
                self.create_schema(check_if_exists=True, verbosity=verbosity)
                post_schema_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
            except Exception:
                # We failed creating the schema, delete what we created and
                # re-raise the exception
                self._drop_schema()
                raise