influxql/setting.go at master · been2io/influxql · GitHub

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
package influxql

import (
	"bytes"
	"errors"
	"fmt"
	"math"
	"strings"
)

type AlterConfigStatement struct {
	Setting map[string]int64
	DB      string
}

func (s *AlterConfigStatement) node() {

}

func (s *AlterConfigStatement) String() string {
	if s.Setting == nil {
		return ""
	}
	var buf bytes.Buffer
	buf.WriteString("alter config on ")
	buf.WriteString(fmt.Sprintf("\"%v\"", s.DB))
	for k, v := range s.Setting {
		buf.WriteString(" ")
		buf.WriteString(k)
		buf.WriteString(" ")
		buf.WriteString(fmt.Sprint(v))
	}
	return buf.String()
}

func (s AlterConfigStatement) stmt() {

}

func (s *AlterConfigStatement) RequiredPrivileges() (ExecutionPrivileges, error) {
	return ExecutionPrivileges{{Admin: false, Name: s.DB, Privilege: ReadPrivilege}}, nil

}

type ShowConfigStatement struct {
	DB string
}

func (s *ShowConfigStatement) node() {
}

func (s *ShowConfigStatement) String() string {
	return fmt.Sprintf("show config on \"%v\"", s.DB)
}

func (s *ShowConfigStatement) stmt() {
}

func (s *ShowConfigStatement) RequiredPrivileges() (ExecutionPrivileges, error) {
	return ExecutionPrivileges{{Admin: false, Name: s.DB, Privilege: ReadPrivilege}}, nil

}

type DropConfigStatement struct {
	DB string
}

func (d *DropConfigStatement) node() {
}

func (d *DropConfigStatement) String() string {
	return fmt.Sprintf("DROP CONFIG ON \"%v\"", d.DB)
}

func (d *DropConfigStatement) stmt() {
}

func (d *DropConfigStatement) RequiredPrivileges() (ExecutionPrivileges, error) {
	return ExecutionPrivileges{{Admin: false, Name: d.DB, Privilege: ReadPrivilege}}, nil

}

func (p *Parser) parseShowConfigStatement() (*ShowConfigStatement, error) {
	err := p.parseTokens([]Token{ON})
	if err != nil {
		return nil, err
	}
	_, _, lit := p.ScanIgnoreWhitespace()
	if lit == "" {
		return nil, errors.New("database name required")
	}
	return &ShowConfigStatement{DB: lit}, nil
}
func (p *Parser) parseAlterConfigStatement() (*AlterConfigStatement, error) {
	stmt := &AlterConfigStatement{
		Setting: make(map[string]int64),
	}
	err := p.parseTokens([]Token{ON})
	if err != nil {
		return nil, err
	}
	_, _, lit := p.ScanIgnoreWhitespace()
	if lit == "" {
		return nil, errors.New("database name or * required")
	}
	stmt.DB = lit
	for {
		_, _, lit := p.ScanIgnoreWhitespace()
		if lit == "" {
			if len(stmt.Setting) == 0 {
				return nil, fmt.Errorf("require %v", settings)
			}
			break
		}
		var found bool
		for _, s := range settings {
			if lit == s {
				found = true
			}
		}
		if !found {
			return nil, fmt.Errorf("no setting named %v,require %v", lit, settings)
		}
		var v int64
		if strings.HasSuffix(lit, "Duration") {
			d, err := p.ParseDuration()
			if err != nil {
				return nil, err
			}
			v = int64(d)
		} else {
			d, err := p.ParseInt(0, math.MaxInt64)
			if err != nil {
				return nil, err
			}
			v = int64(d)
		}
		stmt.Setting[lit] = v

	}
	return stmt, nil
}

func (p *Parser) parseDropConfigStatement() (*DropConfigStatement, error) {
	err := p.parseTokens([]Token{ON})
	if err != nil {
		return nil, err
	}
	_, _, lit := p.ScanIgnoreWhitespace()
	if lit == "" {
		return nil, errors.New("database name required")
	}
	return &DropConfigStatement{DB: lit}, nil
}