/
query-common.go
162 lines (150 loc) · 4.34 KB
/
query-common.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
package utils
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/timestreamquery"
"fmt"
"os"
)
func fail(s string) {
panic(s)
}
func Check(e error) {
if e != nil {
panic(e)
}
}
func write(f *os.File, s string) {
if f != nil {
_, err := f.WriteString(s + "\n")
Check(err)
f.Sync()
}
}
func processScalarType(data *timestreamquery.Datum) string {
return *data.ScalarValue
}
func processTimeSeriesType(data []*timestreamquery.TimeSeriesDataPoint, columnInfo *timestreamquery.ColumnInfo) string {
value := ""
for k := 0; k < len(data); k++ {
time := data[k].Time
value += *time + ":"
if columnInfo.Type.ScalarType != nil {
value += processScalarType(data[k].Value)
} else if columnInfo.Type.ArrayColumnInfo != nil {
value += processArrayType(data[k].Value.ArrayValue, columnInfo.Type.ArrayColumnInfo)
} else if columnInfo.Type.RowColumnInfo != nil {
value += processRowType(data[k].Value.RowValue.Data, columnInfo.Type.RowColumnInfo)
} else {
fail("Bad data type")
}
if k != len(data)-1 {
value += ", "
}
}
return value
}
func processArrayType(datumList []*timestreamquery.Datum, columnInfo *timestreamquery.ColumnInfo) string {
value := ""
for k := 0; k < len(datumList); k++ {
if columnInfo.Type.ScalarType != nil {
value += processScalarType(datumList[k])
} else if columnInfo.Type.TimeSeriesMeasureValueColumnInfo != nil {
value += processTimeSeriesType(datumList[k].TimeSeriesValue, columnInfo.Type.TimeSeriesMeasureValueColumnInfo)
} else if columnInfo.Type.ArrayColumnInfo != nil {
value += "["
value += processArrayType(datumList[k].ArrayValue, columnInfo.Type.ArrayColumnInfo)
value += "]"
} else if columnInfo.Type.RowColumnInfo != nil {
value += "["
value += processRowType(datumList[k].RowValue.Data, columnInfo.Type.RowColumnInfo)
value += "]"
} else {
fail("Bad column type")
}
if k != len(datumList)-1 {
value += ", "
}
}
return value
}
func processRowType(data []*timestreamquery.Datum, metadata []*timestreamquery.ColumnInfo) string {
value := ""
for j := 0; j < len(data); j++ {
if metadata[j].Type.ScalarType != nil {
// process simple data types
value += processScalarType(data[j])
} else if metadata[j].Type.TimeSeriesMeasureValueColumnInfo != nil {
// fmt.Println("Timeseries measure value column info")
// fmt.Println(metadata[j].Type.TimeSeriesMeasureValueColumnInfo.Type)
datapointList := data[j].TimeSeriesValue
value += "["
value += processTimeSeriesType(datapointList, metadata[j].Type.TimeSeriesMeasureValueColumnInfo)
value += "]"
} else if metadata[j].Type.ArrayColumnInfo != nil {
columnInfo := metadata[j].Type.ArrayColumnInfo
// fmt.Println("Array column info")
// fmt.Println(columnInfo)
datumList := data[j].ArrayValue
value += "["
value += processArrayType(datumList, columnInfo)
value += "]"
} else if metadata[j].Type.RowColumnInfo != nil {
columnInfo := metadata[j].Type.RowColumnInfo
datumList := data[j].RowValue.Data
value += "["
value += processRowType(datumList, columnInfo)
value += "]"
} else {
panic("Bad column type")
}
// comma seperated column values
if j != len(data)-1 {
value += ", "
}
}
return value
}
func RunQuery(queryPtr *string, querySvc *timestreamquery.TimestreamQuery, f *os.File) {
queryInput := ×treamquery.QueryInput{
QueryString: aws.String(*queryPtr),
}
fmt.Println("QueryInput:")
fmt.Println(queryInput)
// execute the query
err := querySvc.QueryPages(queryInput,
func(page *timestreamquery.QueryOutput, lastPage bool) bool {
// process query response
// query response metadata
// includes column names and types
metadata := page.ColumnInfo
// fmt.Println("Metadata:")
fmt.Println(metadata)
if f != nil {
write(f, fmt.Sprintf("Query : %s\n",*queryPtr))
header := ""
for i := 0; i < len(metadata); i++ {
header += *metadata[i].Name
if i != len(metadata)-1 {
header += ", "
}
}
write(f, header)
}
// query response data
fmt.Println("Data:")
// process rows
rows := page.Rows
for i := 0; i < len(rows); i++ {
data := rows[i].Data
value := processRowType(data, metadata)
fmt.Println(value)
write(f, value)
}
fmt.Println("Number of rows:", len(page.Rows))
return true
})
if err != nil {
fmt.Println("Error:")
fmt.Println(err)
}
}