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technologies.go
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technologies.go
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// Copyright (c) 2020 Sorint.lab S.p.A.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package database
import (
"context"
"time"
"github.com/amreo/mu"
"github.com/ercole-io/ercole/model"
"github.com/ercole-io/ercole/utils"
"go.mongodb.org/mongo-driver/bson"
)
// GetHostsCountUsingTechnologies return a map that contains the number of usages for every features
func (md *MongoDatabase) GetHostsCountUsingTechnologies(location string, environment string, olderThan time.Time) (map[string]float64, utils.AdvancedErrorInterface) {
var out map[string]float64 = make(map[string]float64)
//Find the matching hostdata
cur, err := md.Client.Database(md.Config.Mongodb.DBName).Collection("hosts").Aggregate(
context.TODO(),
mu.MAPipeline(
FilterByLocationAndEnvironmentSteps(location, environment),
FilterByOldnessSteps(olderThan),
mu.APGroup(bson.M{
"_id": 1,
model.TechnologyOracleDatabase: mu.APOSum(
mu.APOCond(mu.APOGreater(mu.APOSize(mu.APOIfNull("$features.oracle.database.databases", bson.A{})), 0), 1, 0),
),
model.TechnologyOracleExadata: mu.APOSum(
mu.APOCond(mu.APOGreater(mu.APOSize(mu.APOIfNull("$features.oracle.exadata.components", bson.A{})), 0), 1, 0),
),
}),
mu.APUnset("_id"),
),
)
if err != nil {
return nil, utils.NewAdvancedErrorPtr(err, "DB ERROR")
}
hasNext := cur.Next(context.TODO())
if !hasNext {
return out, nil
}
if err := cur.Decode(&out); err != nil {
return nil, utils.NewAdvancedErrorPtr(err, "DB ERROR")
}
return out, nil
}