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cost_diff.go
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cost_diff.go
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// Copyright 2018 MSolution.IO
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package reports
import (
"context"
"database/sql"
"time"
"github.com/trackit/jsonlog"
"github.com/trackit/trackit-server/aws"
"github.com/trackit/trackit-server/aws/usageReports/history"
"github.com/trackit/trackit-server/costs/diff"
)
type costDiffProduct map[time.Time]diff.PricePoint
var costDiffHeader = []cell{
newCell("Account").addStyle(textCenter, textBold, backgroundGrey),
newCell("Product").addStyle(textCenter, textBold, backgroundGrey),
}
func formatCostDiff(data []diff.PricePoint) (values costDiffProduct, err error) {
values = make(costDiffProduct)
for _, value := range data {
date, err := time.Parse("2006-01-02T15:04:05.000Z", value.Date)
if err != nil {
return values, err
}
values[date] = value
}
return
}
func getValueForDate(values costDiffProduct, date time.Time) *diff.PricePoint {
if value, ok := values[date] ; ok {
return &value
}
return nil
}
func getCostDiff(ctx context.Context, aas []aws.AwsAccount, date time.Time, tx *sql.Tx) (data [][]cell, err error) {
logger := jsonlog.LoggerFromContextOrDefault(ctx)
logger.Debug("Getting Cost Differentiator Report for accounts", map[string]interface{}{
"accounts": aas,
})
data = make([][]cell, 0)
header := costDiffHeader
var dateBegin, dateEnd time.Time
if date.IsZero() {
dateBegin, dateEnd = history.GetHistoryDate()
} else {
dateBegin = date
dateEnd = time.Date(dateBegin.Year(), dateBegin.Month()+1, 0, 23, 59, 59, 999999999, dateBegin.Location()).UTC()
}
dates := make([]time.Time, dateEnd.Day())
for index := range dates {
dates[index] = dateBegin.AddDate(0, 0, index)
date := dates[index].Format("2006-01-02")
header = append(header, newCell(date + " - Cost").addStyle(textCenter, textBold, backgroundGrey))
if len(header) > 2 {
header = append(header, newCell(date + " - Variation").addStyle(textCenter, textBold, backgroundGrey),)
}
}
data = append(data, header)
for _, aa := range aas {
report, err := diff.TaskDiffData(ctx, aa, date)
if err != nil {
logger.Error("An error occured while generating a cost differentiator report", map[string]interface{}{
"error": err,
"account": aa,
})
return data, err
}
for product, values := range report {
row := make([]cell, 0)
row = append(row, newCell(aa.AwsIdentity).addStyle(backgroundLightGrey))
row = append(row, newCell(product).addStyle(backgroundLightGrey))
formattedValues, err := formatCostDiff(values)
if err != nil {
logger.Error("An error occured while parsing timestamp", map[string]interface{}{
"error": err,
"account": aa,
"values": values,
})
return data, err
}
for _, date := range dates {
value := getValueForDate(formattedValues, date)
if value != nil {
row = append(row, newCell(value.Cost))
} else {
row = append(row, newCell("N/A"))
}
if len(row) > 4 {
if value != nil {
cell := newCell(value.PercentVariation / 100)
if value.PercentVariation < 0 {
cell.addStyle(backgroundGreen)
} else if value.PercentVariation > 0 {
cell.addStyle(backgroundRed)
}
row = append(row, cell)
} else {
row = append(row, newCell("N/A"))
}
}
}
data = append(data, row)
}
}
return
}