LCORE-2631: Vulnerability report script: Dependabot data processing part

scripts/vulnerability_report.py

@@ -5,9 +5,39 @@
 Rretrieves Dependabot issues, analyses issues, generates graphs, and generates
 HTML page with Vulnerability report. Is is also possible to compare two
 repositories.
+
+# Usage:
+usage: vulnerability_report.py [-h] [-v] --organization ORGANIZATION
+                   --repository REPOSITORY [-r] [-g] [-p]
+                   [-c COMPARISON [COMPARISON ...]]
+
+Vulnerability report tool
+
+options:
+  -h, --help            show this help message and exit
+  -v, --verbose         make it verbose
+  --organization ORGANIZATION
+                        GitHub organization.
+  --repository REPOSITORY
+                        GitHub repository.
+  -r, --retrieve-issues
+                        Retrieve issues
+  -g, --generate-graphs
+                        Generate graphs with vulnerabilities info
+  -p, --generate-page   Generate page with vulnerabilities info
+  -c, --comparison COMPARISON [COMPARISON ...]
+                        Compare two or more repositories and generate
+                        comparison report. Multiple JSON files with Dependabot
+                        alerts needs to be provided
 """
 
-from argparse import ArgumentParser
+from argparse import ArgumentParser, Namespace
+import json
+
+from typing import Any
+
+type DependabotAlert = dict[str, Any]
+type DependabotAlerts = list[DependabotAlert]
 
 
 def create_argument_parser() -> ArgumentParser:
@@ -46,35 +76,107 @@ def create_argument_parser() -> ArgumentParser:
     parser.add_argument(
         "-r",
         "--retrieve-issues",
-        default=True,
+        action="store_true",
+        default=False,
         help="Retrieve issues",
     )
 
     parser.add_argument(
         "-g",
         "--generate-graphs",
-        default=True,
+        action="store_true",
+        default=False,
         help="Generate graphs with vulnerabilities info",
     )
 
     parser.add_argument(
         "-p",
         "--generate-page",
-        default=True,
+        action="store_true",
+        default=False,
         help="Generate page with vulnerabilities info",
     )
 
     parser.add_argument(
         "-c",
         "--comparison",
-        default=False,
-        help="Compare two repositories and generate comparison report. "
-        "Need to be used with --data1 and --data2 options",
+        required=False,
+        nargs="+",
+        default=[],
+        help="Compare two or more repositories and generate comparison report. "
+        "Multiple JSON files with Dependabot alerts needs to be provided",
     )
 
     return parser
 
 
+def dependabot_file_name(args: Namespace) -> str:
+    """Construct file name containing Dependabot alerts."""
+    return f"{args.organization}__{args.repository}.json"
+
+
+def load_dependabot_file(filename: str) -> Any:
+    """Load JSON file containing Dependabot alerts."""
+    with open(filename, "r") as fin:
+        return json.load(fin)
+
+
+def has_attribute_with_value(item: DependabotAlert, attribute: str, value: str) -> bool:
+    """Check if dictionary has attribute with given value."""
+    return bool(item[attribute] == value)
+
+
+def has_deep_attribute_with_value(
+    item: DependabotAlert, selector: str, attribute: str, value: str
+) -> bool:
+    """Check if dictionary has deep attribute with given value."""
+    return bool(item[selector][attribute] == value)
+
+
+def count_attribute_with_value(
+    items: DependabotAlerts, attribute: str, value: str
+) -> int:
+    """Count all attributes with given value."""
+    cnt: int = 0
+    for item in items:
+        if has_attribute_with_value(item, attribute, value):
+            cnt += 1
+    return cnt
+
+
+def count_deep_attribute_with_value(
+    items: DependabotAlerts, selector: str, attribute: str, value: str
+) -> int:
+    """Count all deep attributes with given value."""
+    cnt: int = 0
+    for item in items:
+        if has_deep_attribute_with_value(item, selector, attribute, value):
+            cnt += 1
+    return cnt
+
+
+def opened_cves(source_data: DependabotAlerts) -> int:
+    """Compute how many CVEs are opened."""
+    return count_attribute_with_value(source_data, "state", "open")
+
+
+def fixed_cves(source_data: DependabotAlerts) -> int:
+    """Compute how many CVEs has been fixed opened."""
+    return count_attribute_with_value(source_data, "state", "fixed")
+
+
+def with_severity(severity: str, source_data: DependabotAlerts) -> int:
+    """Count number of CVE having specified severity."""
+    return count_deep_attribute_with_value(
+        source_data, "security_advisory", "severity", severity
+    )
+
+
+def process_dependabot_file(dependabot_file: str, prefix: str) -> dict[str, Any]:
+    """Read Dependabot alerts and prepare statistic info."""
+    return {}
+
+
 def main() -> int:
     """
     CLI entry point that retrieves Dependabot issues and produces Vulnerability report.
@@ -94,8 +196,9 @@ def main() -> int:
     """
     parser = create_argument_parser()
     args = parser.parse_args()
-
-    print(args)
+    dependabot_file = dependabot_file_name(args)
+    prefix = args.repository
+    process_dependabot_file(dependabot_file, prefix)
     return 0