Ledda/rpi-sensors
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This commit is contained in:
Daniel Ledda
2020-11-04 18:51:28 +01:00
parent 997e997d84
commit ff7e787ac2
1 changed files with 19 additions and 4 deletions
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23
Database.go
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@@ -40,17 +40,32 @@ func writeSnapshotToDb(snapshotSub *SnapshotSubmission) error {
} }
func getSnapshotRecordsFromDb(rowCount int) ([]*SnapshotRecord, error) { func getSnapshotRecordsFromDb(rowCount int) ([]*SnapshotRecord, error) {
records := make([]*SnapshotRecord, rowCount) snapshots := make([]*SnapshotRecord, rowCount)
query := fmt.Sprintf("SELECT * FROM `snapshots` ORDER BY `id` DESC LIMIT %v;", rowCount) query := fmt.Sprintf("SELECT `%s`, `%s`, `%s`, `%s`, `%s` FROM `snapshots` ORDER BY `id` DESC LIMIT %v;",
"id",
"temp",
"humidity",
"co2",
"time",
rowCount,
)
rows, err := ClimateDb.Query(query) rows, err := ClimateDb.Query(query)
if err != nil { if err != nil {
return nil, err return nil, err
} }
for i := 0; rows.Next(); i++ { for i := 0; rows.Next(); i++ {
err = rows.Scan(records[i]) var snapshotRecord SnapshotRecord
err = rows.Scan(
snapshotRecord.Id,
snapshotRecord.Temp,
snapshotRecord.Humidity,
snapshotRecord.Co2,
snapshotRecord.Timestamp,
)
if err != nil { if err != nil {
return nil, err return nil, err
} }
snapshots = append(snapshots, &snapshotRecord)
} }
return records, nil return snapshots, nil
} }