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Visualisations list page #15

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Merged
mtaylorgds merged 3 commits into from
Apr 28, 2026
Merged

Visualisations list page #15

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37dca63
Add a page to choose a visualisation graph
mtaylorgds Apr 24, 2026
51af2b4
Fetch list of visualisations from S3
mtaylorgds Apr 24, 2026
c5b716a
Show a message when there are no visualisations
mtaylorgds Apr 24, 2026
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7 changes: 6 additions & 1 deletion app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
start_extraction_job,
)
from src.visualiser_graph_loader import (
available_visualisations,
extract_path_parts,
load_json_file,
visualiser_graph_file_path,
Expand All @@ -21,7 +22,6 @@

load_dotenv()

# Configure logging
logging.basicConfig(
level=logging.INFO,
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
Expand All @@ -44,6 +44,11 @@ def graph_page():

return render_template("graph.html", source_path=source_path_param or "")

@app.route("/visualisations", methods=["GET"])
def visualisations_page():
"""Serve a page listing all available visualisations."""
return render_template("visualisations.html", visualisations=available_visualisations())

@app.route("/graph-viewmodel", methods=["GET"])
async def graph_viewmodel():
"""Serve the graph data as JSON for the frontend."""
Expand Down
29 changes: 28 additions & 1 deletion src/visualiser_graph_loader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@

ONTOLOGY_RUN_PATH_PATTERN = r"(?P<domain_name>[a-zA-Z0-9_-]+)/(?P<run>run-\d+-\d+)"
S3_BUCKET_NAME = "govuk-ai-accelerator-data-integration"
GRAPH_TOOLS_PATH_S3 = f"{S3_BUCKET_NAME}/graph_tools/"


def load_json_file(file_path: str) -> Dict[str, Any]:
Expand All @@ -21,7 +22,7 @@ def load_json_file(file_path: str) -> Dict[str, Any]:
def visualiser_graph_file_path(source_path: str | None) -> str:
if source_path:
domain_name, run_id = extract_path_parts(source_path)
filename = f"s3://{S3_BUCKET_NAME}/graph_tools/{domain_name}/{run_id}/graphNode.json"
filename = f"s3://{GRAPH_TOOLS_PATH_S3}{domain_name}/{run_id}/graphNode.json"
logger.info(f"Loading graph data from: '{filename}'")
else:
filename = "graph-viewmodel.json"
Expand All @@ -38,3 +39,29 @@ def extract_path_parts(path: str) -> tuple[str, str]:
domain_name = match.group("domain_name")
run_id = match.group("run")
return domain_name, run_id


def available_visualisations():
fs = fsspec.filesystem("s3")
items = []

try:
domain_paths = fs.ls(f"s3://{GRAPH_TOOLS_PATH_S3}", detail=False)

for domain_path in domain_paths:
domain_name = domain_path[len(f"{GRAPH_TOOLS_PATH_S3}") :]

run_paths = fs.ls(f"s3://{GRAPH_TOOLS_PATH_S3}{domain_name}/", detail=False)

for run_path in run_paths:
run_id = run_path[len(f"{GRAPH_TOOLS_PATH_S3}{domain_name}/") :]

if not run_id.startswith("run-"):
continue

source_path = f"{domain_name}/{run_id}"
items.append({"source_path": source_path})
except FileNotFoundError:
logger.exception("Error listing visualisations from S3.")

return items
27 changes: 27 additions & 0 deletions templates/visualisations.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Visualisations</title>
<link rel="stylesheet" href="{{ url_for('static', filename='css/graph.css') }}" />
</head>
<body>
<header>
<h1>Visualisations</h1>
</header>
<main>
{% if visualisations %}
<ul class="visualisation-list">
{% for v in visualisations %}
<li>
<a href="{{ url_for('graph_page', source_path=v.source_path) }}">{{ v.source_path }}</a>
</li>
{% endfor %}
</ul>
{% else %}
<p>There are no visualisations to show</p>
{% endif %}
</main>
</body>
</html>
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