Demo website (#69)

**Summary**:
* End-to-end demo website to allow users to set system knobs, query
knobs, and indexes manually and then evaluate the runtime of 3 JOB
queries over that configuration.

**Demo**:
https://db.cs.cmu.edu/files/videos/dbgym-demo-sigmod2025.mp4

Author: wangpatrick57

.gitignore

@@ -7,4 +7,5 @@ build/
 workspace/
 default_*_benchbase_config_*.xml
 *.egg-info/
-*.code-workspace
+*.code-workspace
+.DS_Store

README.md

@@ -1,7 +1,7 @@
 # 🛢️ Database Gym 🏋️
 [\[Slides\]](http://www.cidrdb.org/cidr2023/slides/p27-lim-slides.pdf) [\[Paper\]](https://www.cidrdb.org/cidr2023/papers/p27-lim.pdf)
 
-*An end-to-end research vehicle for the field of self-driving DBMSs.*
+*An end-to-end research vehicle for self-driving databases.*
 
 ## Quickstart
 

benchmark/constants.py

@@ -3,13 +3,13 @@
 
 import click
 from gymlib.infra_paths import (
+    DEFAULT_SCALE_FACTOR,
     get_tables_dirname,
     get_workload_dirname,
     get_workload_suffix,
 )
 from gymlib.workspace import DBGymWorkspace, fully_resolve_path, name_to_linkname
 
-from benchmark.constants import DEFAULT_SCALE_FACTOR
 from util.shell import subprocess_run
 
 JOB_TABLES_URL = "https://event.cwi.nl/da/job/imdb.tgz"
@@ -268,7 +268,7 @@ def _generate_job_workload(
     elif query_subset == "a":
         query_names = [qname for qname in JOB_QUERY_NAMES if qname[-1] == "a"]
     elif query_subset == "demo":
-        query_names = [f"{i}a" for i in range(1, 6)]
+        query_names = ["1a", "2a", "4a"]
     else:
         assert False
 

benchmark/job/cli.py

@@ -1,10 +1,9 @@
 from pathlib import Path
 from typing import Optional
 
-from gymlib.infra_paths import get_tables_symlink_path
+from gymlib.infra_paths import DEFAULT_SCALE_FACTOR, get_tables_symlink_path
 from gymlib.workspace import DBGymWorkspace, fully_resolve_path
 
-from benchmark.constants import DEFAULT_SCALE_FACTOR
 from dbms.load_info_base_class import LoadInfoBaseClass
 
 JOB_SCHEMA_FNAME = "job_schema.sql"

benchmark/job/load_info.py

@@ -3,6 +3,7 @@
 from pathlib import Path
 
 from gymlib.infra_paths import (
+    DEFAULT_SCALE_FACTOR,
     get_tables_symlink_path,
     get_workload_suffix,
     get_workload_symlink_path,
@@ -14,7 +15,6 @@
 )
 
 # It's ok to import private functions from the benchmark module because this is an integration test.
-from benchmark.constants import DEFAULT_SCALE_FACTOR
 from benchmark.job.cli import _job_tables, _job_workload
 from benchmark.tpch.cli import _tpch_tables, _tpch_workload
 from benchmark.tpch.constants import DEFAULT_TPCH_SEED

benchmark/tests/integtest_benchmark.py

@@ -2,6 +2,7 @@
 
 import click
 from gymlib.infra_paths import (
+    DEFAULT_SCALE_FACTOR,
     get_scale_factor_string,
     get_tables_dirname,
     get_tables_symlink_path,
@@ -16,7 +17,6 @@
     name_to_linkname,
 )
 
-from benchmark.constants import DEFAULT_SCALE_FACTOR
 from benchmark.tpch.constants import DEFAULT_TPCH_SEED, NUM_TPCH_QUERIES
 from util.shell import subprocess_run
 

benchmark/tpch/cli.py

@@ -11,11 +11,21 @@
 import click
 import sqlalchemy
 from gymlib.infra_paths import (
+    DEFAULT_SCALE_FACTOR,
     get_dbdata_tgz_symlink_path,
     get_pgbin_symlink_path,
     get_repo_symlink_path,
 )
-from gymlib.pg import create_sqlalchemy_conn, sql_file_execute
+from gymlib.pg import (
+    DBGYM_POSTGRES_DBNAME,
+    DBGYM_POSTGRES_PASS,
+    DBGYM_POSTGRES_USER,
+    DEFAULT_POSTGRES_DBNAME,
+    DEFAULT_POSTGRES_PORT,
+    SHARED_PRELOAD_LIBRARIES,
+    create_sqlalchemy_conn,
+    sql_file_execute,
+)
 from gymlib.workspace import (
     WORKSPACE_PATH_PLACEHOLDER,
     DBGymWorkspace,
@@ -27,19 +37,11 @@
 )
 from sqlalchemy import text
 
-from benchmark.constants import DEFAULT_SCALE_FACTOR
 from benchmark.job.load_info import JobLoadInfo
 from benchmark.tpch.load_info import TpchLoadInfo
 from dbms.load_info_base_class import LoadInfoBaseClass
 from util.shell import subprocess_run
 
-DBGYM_POSTGRES_USER = "dbgym_user"
-DBGYM_POSTGRES_PASS = "dbgym_pass"
-DBGYM_POSTGRES_DBNAME = "dbgym"
-DEFAULT_POSTGRES_DBNAME = "postgres"
-DEFAULT_POSTGRES_PORT = 5432
-SHARED_PRELOAD_LIBRARIES = "boot,pg_hint_plan,pg_prewarm"
-
 
 @click.group(name="postgres")
 @click.pass_obj