drop ES_MODE hub setting, rename hub entry points

`lbry-hub-writer` - keeps an up-to-date database
`lbry-hub-server` - replies to clients with data from a read only snapshot of the db
`lbry-hub-elastic-sync` - watches for changes to the db and updates elasticsearch accordingly

lbry/wallet/orchstr8/node.py

@@ -219,9 +219,10 @@ class SPVNode:
         }
         if extraconf:
             conf.update(extraconf)
-        self.writer = BlockProcessor(Env(self.coin_class, es_mode='writer', **conf))
-        self.server = BlockchainReaderServer(Env(self.coin_class, es_mode='reader', **conf))
-        self.es_writer = ElasticWriter(Env(self.coin_class, es_mode='reader', **conf))
+        env = Env(self.coin_class, **conf)
+        self.writer = BlockProcessor(env)
+        self.server = BlockchainReaderServer(env)
+        self.es_writer = ElasticWriter(env)
         await self.writer.open()
         await self.writer.start()
         await asyncio.wait([self.server.start(), self.es_writer.start()])

lbry/wallet/server/cli.py

@@ -4,25 +4,23 @@ import argparse
 from lbry.wallet.server.env import Env
 from lbry.wallet.server.block_processor import BlockProcessor
 from lbry.wallet.server.chain_reader import BlockchainReaderServer
+from lbry.wallet.server.db.elasticsearch.sync import ElasticWriter
 
 
-def get_argument_parser():
+def get_args_and_setup_logging(name):
     parser = argparse.ArgumentParser(
-        prog="lbry-hub"
+        prog=name
     )
     Env.contribute_to_arg_parser(parser)
-    return parser
-
-
-def main():
-    parser = get_argument_parser()
     args = parser.parse_args()
     logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)-4s %(name)s:%(lineno)d: %(message)s")
-    logging.info('lbry.server starting')
     logging.getLogger('aiohttp').setLevel(logging.WARNING)
     logging.getLogger('elasticsearch').setLevel(logging.WARNING)
+    return args
 
-    if args.es_mode == 'writer':
+
+def run_writer_forever():
+    args = get_args_and_setup_logging('lbry-hub-writer')
     try:
         block_processor = BlockProcessor(Env.from_arg_parser(args))
         block_processor.run()
@@ -31,7 +29,11 @@ def main():
         logging.critical('block processor terminated abnormally')
     else:
         logging.info('block processor terminated normally')
-    else:
+
+
+def run_server_forever():
+    args = get_args_and_setup_logging('lbry-hub-server')
+
     try:
         server = BlockchainReaderServer(Env.from_arg_parser(args))
         server.run()
@@ -42,5 +44,13 @@ def main():
         logging.info('server terminated normally')
 
 
-if __name__ == "__main__":
-    main()
+def run_es_sync_forever():
+    args = get_args_and_setup_logging('lbry-hub-elastic-sync')
+    try:
+        server = ElasticWriter(Env.from_arg_parser(args))
+        server.run()
+    except Exception:
+        traceback.print_exc()
+        logging.critical('es writer terminated abnormally')
+    else:
+        logging.info('es writer terminated normally')

lbry/wallet/server/env.py

@@ -30,7 +30,7 @@ class Env:
 
     def __init__(self, coin=None, db_dir=None, daemon_url=None, host=None, rpc_host=None, elastic_host=None,
                  elastic_port=None, loop_policy=None, max_query_workers=None, websocket_host=None, websocket_port=None,
-                 chain=None, es_index_prefix=None, es_mode=None, cache_MB=None, reorg_limit=None, tcp_port=None,
+                 chain=None, es_index_prefix=None, cache_MB=None, reorg_limit=None, tcp_port=None,
                  udp_port=None, ssl_port=None, ssl_certfile=None, ssl_keyfile=None, rpc_port=None,
                  prometheus_port=None, max_subscriptions=None, banner_file=None, anon_logs=None, log_sessions=None,
                  allow_lan_udp=None, cache_all_tx_hashes=None, cache_all_claim_txos=None, country=None,
@@ -69,7 +69,6 @@ class Env:
             else:
                 self.coin = LBCRegTest
         self.es_index_prefix = es_index_prefix if es_index_prefix is not None else self.default('ES_INDEX_PREFIX', '')
-        self.es_mode = es_mode if es_mode is not None else self.default('ES_MODE', 'writer')
         self.cache_MB = cache_MB if cache_MB is not None else self.integer('CACHE_MB', 1024)
         self.reorg_limit = reorg_limit if reorg_limit is not None else self.integer('REORG_LIMIT', self.coin.REORG_LIMIT)
         # Server stuff
@@ -329,8 +328,6 @@ class Env:
                             help='elasticsearch host')
         parser.add_argument('--elastic_port', default=cls.integer('ELASTIC_PORT', 9200), type=int,
                             help='elasticsearch port')
-        parser.add_argument('--es_mode', default=cls.default('ES_MODE', 'writer'), type=str,
-                            choices=['reader', 'writer'])
         parser.add_argument('--es_index_prefix', default=cls.default('ES_INDEX_PREFIX', ''), type=str)
         parser.add_argument('--loop_policy', default=cls.default('EVENT_LOOP_POLICY', 'default'), type=str,
                             choices=['default', 'uvloop'])
@@ -378,7 +375,7 @@ class Env:
             host=args.host, rpc_host=args.rpc_host, elastic_host=args.elastic_host, elastic_port=args.elastic_port,
             loop_policy=args.loop_policy, max_query_workers=args.max_query_workers, websocket_host=args.websocket_host,
             websocket_port=args.websocket_port, chain=args.chain, es_index_prefix=args.es_index_prefix,
-            es_mode=args.es_mode, cache_MB=args.cache_MB, reorg_limit=args.reorg_limit, tcp_port=args.tcp_port,
+            cache_MB=args.cache_MB, reorg_limit=args.reorg_limit, tcp_port=args.tcp_port,
             udp_port=args.udp_port, ssl_port=args.ssl_port, ssl_certfile=args.ssl_certfile,
             ssl_keyfile=args.ssl_keyfile, rpc_port=args.rpc_port, prometheus_port=args.prometheus_port,
             max_subscriptions=args.max_subscriptions, banner_file=args.banner_file, anon_logs=args.anon_logs,

setup.py

@@ -30,9 +30,10 @@ setup(
     entry_points={
         'console_scripts': [
             'lbrynet=lbry.extras.cli:main',
-            'lbry-hub=lbry.wallet.server.cli:main',
-            'orchstr8=lbry.wallet.orchstr8.cli:main',
-            'lbry-hub-elastic-sync=lbry.wallet.server.db.elasticsearch.sync:run_elastic_sync'
+            'lbry-hub-writer=lbry.wallet.server.cli:run_writer_forever',
+            'lbry-hub-server=lbry.wallet.server.cli:run_server_forever',
+            'lbry-hub-elastic-sync=lbry.wallet.server.db.elasticsearch.sync:run_elastic_sync',
+            'orchstr8=lbry.wallet.orchstr8.cli:main'
         ],
     },
     install_requires=[