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* Java file discovery.
*
* Strategy mirrors graph-go:
* 1. Locate a build file. Precedence (resolved-deps first):
* gradle.lockfile > pom.xml > build.gradle.kts > build.gradle.
* We do NOT parse them — recursive `.java` glob with build
* output dirs excluded handles single modules and most multi-
* module layouts. Multi-module workspace-aware discovery
* (Gradle subprojects, Maven `<modules>`) is a follow-up.
* 2. If no build file present, configPath is undefined; cacheKey
* falls back to `no-config`.
*
* Excluded directories:
* - `target/` — Maven build output
* - `build/` — Gradle build output
* - `out/` — IntelliJ default output
* - `bin/` — Eclipse default output
* - `.gradle/` — Gradle cache
* - `node_modules/` — defensive
* - `.git/` — VCS metadata
*
* Returns absolute, realpath-normalized, sorted, deduped paths so I-9
* holds across runs.
*/
import { existsSync, realpathSync } from 'node:fs';
import { resolve, sep } from 'node:path';
import { logger } from '@opensip-tools/core';
import { glob } from 'glob';
import type { DiscoverInput, DiscoverOutput } from '@opensip-tools/graph';
const EXCLUDED_DIR_GLOBS: readonly string[] = [
'**/target/**',
'**/build/**',
'**/out/**',
'**/bin/**',
'**/.gradle/**',
'**/node_modules/**',
'**/.git/**',
];
// Search order: lockfile (most resolved) → pom.xml → build.gradle.kts → build.gradle.
const CONFIG_CANDIDATES: readonly string[] = [
'gradle.lockfile',
'pom.xml',
'build.gradle.kts',
'build.gradle',
];
export function discoverFiles(input: DiscoverInput): DiscoverOutput {
logger.info({
evt: 'graph.discover.start',
module: 'graph:discover:java',
projectDir: input.cwd,
});
const projectDirAbs = normalizeProjectDir(input.cwd);
const configPathAbs = resolveConfigPath(projectDirAbs, input.configPathOverride);
const files = collectJavaFiles(projectDirAbs);
logger.info({
evt: 'graph.discover.complete',
module: 'graph:discover:java',
projectDir: projectDirAbs,
configPath: configPathAbs ?? '(none)',
fileCount: files.length,
});
const out: DiscoverOutput = configPathAbs === undefined
? { projectDirAbs, files }
: { projectDirAbs, files, configPathAbs };
return out;
}
/* v8 ignore start */
function normalizeProjectDir(projectDir: string): string {
const abs = resolve(projectDir);
try {
return realpathSync(abs);
} catch {
return abs;
}
}
/* v8 ignore stop */
function resolveConfigPath(
projectDirAbs: string,
override: string | undefined,
): string | undefined {
if (override !== undefined && override.length > 0) {
const abs = resolve(projectDirAbs, override);
return existsSync(abs) ? realpathOrPath(abs) : abs;
}
for (const candidate of CONFIG_CANDIDATES) {
const path = resolve(projectDirAbs, candidate);
if (existsSync(path)) return realpathOrPath(path);
}
return undefined;
}
/* v8 ignore start */
function realpathOrPath(p: string): string {
try {
return realpathSync(p);
} catch {
return p;
}
}
/* v8 ignore stop */
function collectJavaFiles(projectDirAbs: string): readonly string[] {
const matches: string[] = glob.sync('**/*.java', {
cwd: projectDirAbs,
absolute: true,
ignore: [...EXCLUDED_DIR_GLOBS],
nodir: true,
follow: false,
dot: false,
});
const seen = new Set<string>();
const out: string[] = [];
for (const m of matches) {
let real: string = m;
/* v8 ignore start */
try {
real = realpathSync(m);
} catch {
// fall through with original
}
/* v8 ignore stop */
const key = real.split(sep).join('/');
if (seen.has(key)) continue;
seen.add(key);
out.push(real);
}
out.sort();
return out;
}
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