purl-next: Update PurlDB to support on-demand - composer

[pombredanne]

Update PurlDB to support on-demand, live query of upstream package registries for the PURL types documented in the PURL specification to validate the existence of PURLs for one ecosystem

Composer

API URL- https://repo.packagist.org/p2/laravel/laravel.json

[TG1999]

Add a file for npm ecosystem in minecode/collectors folder and bind priority_router function to process_request for that file to process that PURL.

[TG1999]

This is done now

Reference:

• Add composer collector #689

Steps to test:

• To test this install purldb and set up using README and run make run. This will start server at http://127.0.0.1:8001/.
• Make a request to http://127.0.0.1:8001/api/collect/?purl=pkg:composer/laravel/laravel@v5.0.22
• You will get a response like this

[
    {
        "url": "http://127.0.0.1:8001/api/packages/73499ce4-04fe-4f99-99b7-4442afae3baf/",
        "uuid": "73499ce4-04fe-4f99-99b7-4442afae3baf",
        "filename": "7bddbdc2a1f8d9c23205707e74455d74684e3031",
        "package_sets": [],
        "package_content": "source_archive",
        "purl": "pkg:composer/laravel/laravel@v5.0.22",
        "type": "composer",
        "namespace": "laravel",
        "name": "laravel",
        "version": "v5.0.22",
        "qualifiers": "",
        "subpath": "",
        "primary_language": null,
        "description": null,
        "release_date": null,
        "parties": [],
        "keywords": [],
        "homepage_url": null,
        "download_url": "https://api.github.com/repos/laravel/laravel/zipball/7bddbdc2a1f8d9c23205707e74455d74684e3031",
        "bug_tracking_url": null,
        "code_view_url": null,
        "vcs_url": null,
        "repository_homepage_url": null,
        "repository_download_url": null,
        "api_data_url": null,
        "size": null,
        "md5": null,
        "sha1": "",
        "sha256": null,
        "sha512": null,
        "copyright": null,
        "holder": null,
        "declared_license_expression": null,
        "declared_license_expression_spdx": null,
        "license_detections": [],
        "other_license_expression": null,
        "other_license_expression_spdx": null,
        "other_license_detections": [],
        "extracted_license_statement": "[]",
        "notice_text": null,
        "source_packages": [],
        "extra_data": {},
        "package_uid": "pkg:composer/laravel/laravel@v5.0.22?uuid=73499ce4-04fe-4f99-99b7-4442afae3baf",
        "datasource_id": null,
        "file_references": [],
        "dependencies": [],
        "resources": "http://127.0.0.1:8001/api/packages/73499ce4-04fe-4f99-99b7-4442afae3baf/resources/",
        "history": "http://127.0.0.1:8001/api/packages/73499ce4-04fe-4f99-99b7-4442afae3baf/history/"
    }
]