Problem: MigrationElection naming may conflict with future migration types

Solution: Renamed the class `ChainMigrationElection`

bigchaindb/__init__.py

@@ -7,7 +7,7 @@ import logging
 
 from bigchaindb.log import DEFAULT_LOGGING_CONFIG as log_config
 from bigchaindb.lib import BigchainDB  # noqa
-from bigchaindb.migrations.migration_election import MigrationElection
+from bigchaindb.migrations.chain_migration_election import ChainMigrationElection
 from bigchaindb.version import __version__  # noqa
 from bigchaindb.core import App  # noqa
 
@@ -100,5 +100,5 @@ from bigchaindb.elections.vote import Vote  # noqa
 Transaction.register_type(Transaction.CREATE, models.Transaction)
 Transaction.register_type(Transaction.TRANSFER, models.Transaction)
 Transaction.register_type(ValidatorElection.OPERATION, ValidatorElection)
-Transaction.register_type(MigrationElection.OPERATION, MigrationElection)
+Transaction.register_type(ChainMigrationElection.OPERATION, ChainMigrationElection)
 Transaction.register_type(Vote.OPERATION, Vote)

bigchaindb/commands/bigchaindb.py

@@ -13,7 +13,7 @@ import copy
 import json
 import sys
 
-from bigchaindb.migrations.migration_election import MigrationElection
+from bigchaindb.migrations.chain_migration_election import ChainMigrationElection
 from bigchaindb.utils import load_node_key
 from bigchaindb.common.exceptions import (DatabaseDoesNotExist,
                                           ValidationError)
@@ -165,7 +165,7 @@ def run_election_new_upsert_validator(args, bigchain):
     return create_new_election(args.sk, bigchain, ValidatorElection, new_validator)
 
 
-def run_election_new_migration(args, bigchain):
+def run_election_new_chain_migration(args, bigchain):
     """Initiates an election to halt block production
 
     :param args: dict
@@ -176,7 +176,7 @@ def run_election_new_migration(args, bigchain):
     :return: election_id or `False` in case of failure
     """
 
-    return create_new_election(args.sk, bigchain, MigrationElection, {})
+    return create_new_election(args.sk, bigchain, ChainMigrationElection, {})
 
 
 def run_election_approve(args, bigchain):

bigchaindb/commands/election_types.py

@@ -17,7 +17,7 @@ elections = {
             }
         }
     },
-    'migration': {
+    'chain-migration': {
         'help': 'Call for a halt to block production to allow for a version change across breaking changes.',
         'args': {
             '--private-key': {

bigchaindb/common/schema/__init__.py

@@ -37,8 +37,8 @@ _, TX_SCHEMA_TRANSFER = _load_schema('transaction_transfer_' +
 _, TX_SCHEMA_VALIDATOR_ELECTION = _load_schema('transaction_validator_election_' +
                                                TX_SCHEMA_VERSION)
 
-_, TX_SCHEMA_MIGRATION_ELECTION = _load_schema('transaction_migration_election_' +
-                                               TX_SCHEMA_VERSION)
+_, TX_SCHEMA_CHAIN_MIGRATION_ELECTION = _load_schema('transaction_chain_migration_election_' +
+                                                     TX_SCHEMA_VERSION)
 
 _, TX_SCHEMA_VOTE = _load_schema('transaction_vote_' + TX_SCHEMA_VERSION)
 

bigchaindb/common/schema/transaction_chain_migration_election_v2.0.yaml

@@ -5,7 +5,7 @@
 ---
 "$schema": "http://json-schema.org/draft-04/schema#"
 type: object
-title: Migration Election Schema - Propose a halt in block production to allow for a version change
+title: Chain Migration Election Schema - Propose a halt in block production to allow for a version change
 required:
 - operation
 - asset
@@ -13,7 +13,7 @@ required:
 properties:
   operation:
     type: string
-    value: "MIGRATION_ELECTION"
+    value: "CHAIN_MIGRATION_ELECTION"
   asset:
     additionalProperties: false
     properties:

bigchaindb/common/schema/transaction_v2.0.yaml

@@ -63,7 +63,7 @@ definitions:
     - CREATE
     - TRANSFER
     - VALIDATOR_ELECTION
-    - MIGRATION_ELECTION
+    - CHAIN_MIGRATION_ELECTION
     - VOTE
   asset:
     type: object

bigchaindb/migrations/chain_migration_election.py

@@ -1,13 +1,13 @@
-from bigchaindb.common.schema import TX_SCHEMA_MIGRATION_ELECTION
+from bigchaindb.common.schema import TX_SCHEMA_CHAIN_MIGRATION_ELECTION
 from bigchaindb.elections.election import Election
 
 
-class MigrationElection(Election):
+class ChainMigrationElection(Election):
 
-    OPERATION = 'MIGRATION_ELECTION'
+    OPERATION = 'CHAIN_MIGRATION_ELECTION'
     CREATE = OPERATION
     ALLOWED_OPERATIONS = (OPERATION,)
-    TX_SCHEMA_CUSTOM = TX_SCHEMA_MIGRATION_ELECTION
+    TX_SCHEMA_CUSTOM = TX_SCHEMA_CHAIN_MIGRATION_ELECTION
     CHANGES_VALIDATOR_SET = False
 
     @classmethod

tests/commands/test_commands.py

@@ -26,7 +26,7 @@ def test_make_sure_we_dont_remove_any_command():
     assert parser.parse_args(['start']).command
     assert parser.parse_args(['election', 'new', 'upsert-validator', 'TEMP_PUB_KEYPAIR', '10', 'TEMP_NODE_ID',
                               '--private-key', 'TEMP_PATH_TO_PRIVATE_KEY']).command
-    assert parser.parse_args(['election', 'new', 'migration',
+    assert parser.parse_args(['election', 'new', 'chain-migration',
                               '--private-key', 'TEMP_PATH_TO_PRIVATE_KEY']).command
     assert parser.parse_args(['election', 'approve', 'ELECTION_ID', '--private-key',
                               'TEMP_PATH_TO_PRIVATE_KEY']).command
@@ -344,22 +344,22 @@ def test_election_new_upsert_validator_without_tendermint(caplog, b, priv_valida
 
 
 @pytest.mark.abci
-def test_election_new_migration_with_tendermint(b, priv_validator_path, user_sk, validators):
-    from bigchaindb.commands.bigchaindb import run_election_new_migration
+def test_election_new_chain_migration_with_tendermint(b, priv_validator_path, user_sk, validators):
+    from bigchaindb.commands.bigchaindb import run_election_new_chain_migration
 
     new_args = Namespace(action='new',
                          election_type='migration',
                          sk=priv_validator_path,
                          config={})
 
-    election_id = run_election_new_migration(new_args, b)
+    election_id = run_election_new_chain_migration(new_args, b)
 
     assert b.get_transaction(election_id)
 
 
 @pytest.mark.bdb
-def test_election_new_migration_without_tendermint(caplog, b, priv_validator_path, user_sk):
-    from bigchaindb.commands.bigchaindb import run_election_new_migration
+def test_election_new_chain_migration_without_tendermint(caplog, b, priv_validator_path, user_sk):
+    from bigchaindb.commands.bigchaindb import run_election_new_chain_migration
 
     def mock_write(tx, mode):
         b.store_bulk_transactions([tx])
@@ -374,7 +374,7 @@ def test_election_new_migration_without_tendermint(caplog, b, priv_validator_pat
                      config={})
 
     with caplog.at_level(logging.INFO):
-        election_id = run_election_new_migration(args, b)
+        election_id = run_election_new_chain_migration(args, b)
         assert caplog.records[0].msg == '[SUCCESS] Submitted proposal with id: ' + election_id
         assert b.get_transaction(election_id)
 

tests/conftest.py

@@ -23,7 +23,7 @@ from pymongo import MongoClient
 from bigchaindb import ValidatorElection
 from bigchaindb.common import crypto
 from bigchaindb.log import setup_logging
-from bigchaindb.migrations.migration_election import MigrationElection
+from bigchaindb.migrations.chain_migration_election import ChainMigrationElection
 from bigchaindb.tendermint_utils import key_from_base64
 from bigchaindb.backend import schema, query
 from bigchaindb.common.crypto import (key_pair_from_ed25519_key,
@@ -715,19 +715,19 @@ def valid_upsert_validator_election_2(b_mock, node_key, new_validator):
 
 
 @pytest.fixture
-def valid_migration_election(b_mock, node_key):
-    voters = MigrationElection.recipients(b_mock)
-    return MigrationElection.generate([node_key.public_key],
-                                      voters,
-                                      {}, None).sign([node_key.private_key])
+def valid_chain_migration_election(b_mock, node_key):
+    voters = ChainMigrationElection.recipients(b_mock)
+    return ChainMigrationElection.generate([node_key.public_key],
+                                           voters,
+                                           {}, None).sign([node_key.private_key])
 
 
 @pytest.fixture
-def valid_migration_election_2(b_mock, node_key):
-    voters = MigrationElection.recipients(b_mock)
-    return MigrationElection.generate([node_key.public_key],
-                                      voters,
-                                      {}, None).sign([node_key.private_key])
+def valid_chain_migration_election_2(b_mock, node_key):
+    voters = ChainMigrationElection.recipients(b_mock)
+    return ChainMigrationElection.generate([node_key.public_key],
+                                           voters,
+                                           {}, None).sign([node_key.private_key])
 
 
 @pytest.fixture
@@ -759,21 +759,21 @@ def ongoing_validator_election_2(b, valid_upsert_validator_election_2, ed25519_n
 
 
 @pytest.fixture
-def ongoing_migration_election(b, valid_migration_election, ed25519_node_keys):
+def ongoing_chain_migration_election(b, valid_chain_migration_election, ed25519_node_keys):
 
-    b.store_bulk_transactions([valid_migration_election])
-    block_1 = Block(app_hash='hash_1', height=1, transactions=[valid_migration_election.id])
+    b.store_bulk_transactions([valid_chain_migration_election])
+    block_1 = Block(app_hash='hash_1', height=1, transactions=[valid_chain_migration_election.id])
     b.store_block(block_1._asdict())
-    return valid_migration_election
+    return valid_chain_migration_election
 
 
 @pytest.fixture
-def ongoing_migration_election_2(b, valid_migration_election_2, ed25519_node_keys):
+def ongoing_chain_migration_election_2(b, valid_chain_migration_election_2, ed25519_node_keys):
 
-    b.store_bulk_transactions([valid_migration_election_2])
-    block_1 = Block(app_hash='hash_2', height=1, transactions=[valid_migration_election_2.id])
+    b.store_bulk_transactions([valid_chain_migration_election_2])
+    block_1 = Block(app_hash='hash_2', height=1, transactions=[valid_chain_migration_election_2.id])
     b.store_block(block_1._asdict())
-    return valid_migration_election_2
+    return valid_chain_migration_election_2
 
 
 @pytest.fixture
@@ -791,16 +791,16 @@ def validator_election_votes_2(b_mock, ongoing_validator_election_2, ed25519_nod
 
 
 @pytest.fixture
-def migration_election_votes(b_mock, ongoing_migration_election, ed25519_node_keys):
-    voters = MigrationElection.recipients(b_mock)
-    votes = generate_votes(ongoing_migration_election, voters, ed25519_node_keys)
+def chain_migration_election_votes(b_mock, ongoing_chain_migration_election, ed25519_node_keys):
+    voters = ChainMigrationElection.recipients(b_mock)
+    votes = generate_votes(ongoing_chain_migration_election, voters, ed25519_node_keys)
     return votes
 
 
 @pytest.fixture
-def migration_election_votes_2(b_mock, ongoing_migration_election_2, ed25519_node_keys):
-    voters = MigrationElection.recipients(b_mock)
-    votes = generate_votes(ongoing_migration_election_2, voters, ed25519_node_keys)
+def chain_migration_election_votes_2(b_mock, ongoing_chain_migration_election_2, ed25519_node_keys):
+    voters = ChainMigrationElection.recipients(b_mock)
+    votes = generate_votes(ongoing_chain_migration_election_2, voters, ed25519_node_keys)
     return votes
 
 

tests/elections/test_election.py

@@ -6,37 +6,43 @@ from bigchaindb.elections.election import Election
 
 
 @pytest.mark.bdb
-def test_approved_elections_one_migration_one_upsert(b,
-                                                     ongoing_validator_election, validator_election_votes,
-                                                     ongoing_migration_election, migration_election_votes):
+def test_approved_elections_one_migration_one_upsert(
+        b,
+        ongoing_validator_election, validator_election_votes,
+        ongoing_chain_migration_election, chain_migration_election_votes
+):
     txns = validator_election_votes + \
-           migration_election_votes
+           chain_migration_election_votes
     mock_chain_migration, mock_store_validator = run_approved_elections(b, txns)
     mock_chain_migration.assert_called_once()
     mock_store_validator.assert_called_once()
 
 
 @pytest.mark.bdb
-def test_approved_elections_one_migration_two_upsert(b,
-                                                     ongoing_validator_election, validator_election_votes,
-                                                     ongoing_validator_election_2, validator_election_votes_2,
-                                                     ongoing_migration_election, migration_election_votes):
+def test_approved_elections_one_migration_two_upsert(
+        b,
+        ongoing_validator_election, validator_election_votes,
+        ongoing_validator_election_2, validator_election_votes_2,
+        ongoing_chain_migration_election, chain_migration_election_votes
+):
     txns = validator_election_votes + \
            validator_election_votes_2 + \
-           migration_election_votes
+           chain_migration_election_votes
     mock_chain_migration, mock_store_validator = run_approved_elections(b, txns)
     mock_chain_migration.assert_called_once()
     mock_store_validator.assert_called_once()
 
 
 @pytest.mark.bdb
-def test_approved_elections_two_migrations_one_upsert(b,
-                                                      ongoing_validator_election, validator_election_votes,
-                                                      ongoing_migration_election, migration_election_votes,
-                                                      ongoing_migration_election_2, migration_election_votes_2):
+def test_approved_elections_two_migrations_one_upsert(
+        b,
+        ongoing_validator_election, validator_election_votes,
+        ongoing_chain_migration_election, chain_migration_election_votes,
+        ongoing_chain_migration_election_2, chain_migration_election_votes_2
+):
     txns = validator_election_votes + \
-           migration_election_votes + \
-           migration_election_votes_2
+           chain_migration_election_votes + \
+           chain_migration_election_votes_2
     mock_chain_migration, mock_store_validator = run_approved_elections(b, txns)
     assert mock_chain_migration.call_count == 2
     mock_store_validator.assert_called_once()

tests/migrations/conftest.py

@@ -1,11 +0,0 @@
-import pytest
-
-from bigchaindb.migrations.migration_election import MigrationElection
-
-
-@pytest.fixture
-def valid_migration_election(b_mock, node_key):
-    voters = MigrationElection.recipients(b_mock)
-    return MigrationElection.generate([node_key.public_key],
-                                      voters,
-                                      {}, None).sign([node_key.private_key])

tests/migrations/test_migration_election.py

@@ -1,9 +1,9 @@
-from bigchaindb.migrations.migration_election import MigrationElection
+from bigchaindb.migrations.chain_migration_election import ChainMigrationElection
 
 
 def test_valid_migration_election(b_mock, node_key):
-    voters = MigrationElection.recipients(b_mock)
-    election = MigrationElection.generate([node_key.public_key],
-                                          voters,
-                                          {}, None).sign([node_key.private_key])
+    voters = ChainMigrationElection.recipients(b_mock)
+    election = ChainMigrationElection.generate([node_key.public_key],
+                                               voters,
+                                               {}, None).sign([node_key.private_key])
     assert election.validate(b_mock)