/
systemResponses.go
82 lines (67 loc) · 1.72 KB
/
systemResponses.go
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package reports
import (
"encoding/csv"
"fmt"
"github.com/nsip/dev-nrt/records"
)
type SystemResponses struct {
baseReport // embed common setup capability
}
//
// Summary of student & response information by domain
//
func SystemResponsesReport() *SystemResponses {
r := SystemResponses{}
r.initialise("./config/SystemResponses.toml")
r.printStatus()
return &r
}
//
// implement the EventPipe interface, core work of the
// report engine.
//
func (r *SystemResponses) ProcessEventRecords(in chan *records.EventOrientedRecord) chan *records.EventOrientedRecord {
out := make(chan *records.EventOrientedRecord)
go func() {
defer close(out)
// open the csv file writer, and set the header
w := csv.NewWriter(r.outF)
defer r.outF.Close()
w.Write(r.config.header)
defer w.Flush()
for eor := range in {
if !r.config.activated { // only process if activated
out <- eor
continue
}
//
// generate any calculated fields required
//
eor.CalculatedFields = r.calculateFields(eor)
//
// now loop through the ouput definitions to create a
// row of results
//
var result string
var row []string = make([]string, 0, len(r.config.queries))
for _, query := range r.config.queries {
result = eor.GetValueString(query)
row = append(row, result)
}
// write the row to the output file
if err := w.Write(row); err != nil {
fmt.Println("Warning: error writing record to csv:", r.config.name, err)
}
out <- eor
}
}()
return out
}
//
// generates a block of json that can be added to the
// record containing values that are not in the original data
//
//
func (r *SystemResponses) calculateFields(eor *records.EventOrientedRecord) []byte {
return eor.CalculatedFields
}