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Add support for generating binary data in blob/binary columns #28

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9a6cddc
Add support for generating binary data in blob/binary columns
adregner Jul 9, 2019
8d1ee93
Merge branch 'master' into generate_binary_fields
adregner Sep 27, 2022
9a9040f
Fix tabs
adregner Sep 27, 2022
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
random_data_load*
vendor/
bin/*
build/*
dist/*
9 changes: 7 additions & 2 deletions internal/getters/binary.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,10 +31,15 @@ func (r *RandomBinary) Value() interface{} {
} else {
s = fake.Sentence()
}
if len(s) > int(maxSize) {

if len(s) < int(maxSize) {
extraData := make([]byte, int(maxSize)-len(s))
rand.Read(extraData)
return append([]byte(s), extraData...)
} else {
s = s[:int(maxSize)]
return s
}
return s
}

func (r *RandomBinary) String() string {
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4 changes: 2 additions & 2 deletions main.go
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Expand Up @@ -423,7 +423,7 @@ func makeValueFuncs(conn *sql.DB, fields []tableparser.Field, samples int64) ins
values = append(values, getters.NewRandomDate(field.ColumnName, field.IsNullable))
case "datetime", "timestamp":
values = append(values, getters.NewRandomDateTime(field.ColumnName, field.IsNullable))
case "tinyblob", "tinytext", "blob", "text", "mediumtext", "mediumblob", "longblob", "longtext":
case "tinytext", "text", "mediumtext", "longtext":
values = append(values, getters.NewRandomString(field.ColumnName,
field.CharacterMaximumLength.Int64, field.IsNullable))
case "time":
Expand All @@ -433,7 +433,7 @@ func makeValueFuncs(conn *sql.DB, fields []tableparser.Field, samples int64) ins
int64(time.Now().Year()), field.IsNullable))
case "enum", "set":
values = append(values, getters.NewRandomEnum(field.SetEnumVals, field.IsNullable))
case "binary", "varbinary":
case "binary", "varbinary", "tinyblob", "blob", "mediumblob", "longblob":
values = append(values, getters.NewRandomBinary(field.ColumnName, field.CharacterMaximumLength.Int64, field.IsNullable))
default:
log.Printf("cannot get field type: %s: %s\n", field.ColumnName, field.DataType)
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