75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
# ContentDB
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# Copyright (C) 2020 rubenwardy
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from flask import Blueprint, make_response
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from sqlalchemy.sql.expression import func
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from app.models import Package, db, User, UserRank, PackageState
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bp = Blueprint("metrics", __name__)
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def generate_metrics(full=False):
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def write_single_stat(name, help, type, value):
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fmt = "# HELP {name} {help}\n# TYPE {name} {type}\n{name} {value}\n\n"
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return fmt.format(name=name, help=help, type=type, value=value)
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def gen_labels(labels):
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pieces = [key + "=" + str(val) for key, val in labels.items()]
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return ",".join(pieces)
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def write_array_stat(name, help, type, data):
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ret = "# HELP {name} {help}\n# TYPE {name} {type}\n" \
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.format(name=name, help=help, type=type)
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for entry in data:
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assert(len(entry) == 2)
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ret += "{name}{{{labels}}} {value}\n" \
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.format(name=name, labels=gen_labels(entry[0]), value=entry[1])
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return ret + "\n"
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downloads_result = db.session.query(func.sum(Package.downloads)).one_or_none()
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downloads = 0 if not downloads_result or not downloads_result[0] else downloads_result[0]
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packages = Package.query.filter_by(state=PackageState.APPROVED).count()
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users = User.query.filter(User.rank != UserRank.NOT_JOINED).count()
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ret = ""
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ret += write_single_stat("contentdb_packages", "Total packages", "counter", packages)
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ret += write_single_stat("contentdb_users", "Number of registered users", "counter", users)
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ret += write_single_stat("contentdb_downloads", "Total downloads", "counter", downloads)
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if full:
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scores = Package.query.join(User).with_entities(User.username, Package.name, Package.score) \
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.filter(Package.state==PackageState.APPROVED).all()
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ret += write_array_stat("contentdb_package_score", "Package score", "gauge",
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[({ "author": score[0], "name": score[1] }, score[2]) for score in scores])
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else:
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score_result = db.session.query(func.sum(Package.score)).one_or_none()
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score = 0 if not score_result or not score_result[0] else score_result[0]
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ret += write_single_stat("contentdb_score", "Total package score", "gauge", score)
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return ret
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@bp.route("/metrics")
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def metrics():
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response = make_response(generate_metrics(), 200)
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response.mimetype = "text/plain"
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return response
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