node-api/apps/types.go

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package apps
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import (
"regexp"
"strings"
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"time"
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// This is line from GORM documentation that imports database dialect
_ "github.com/jinzhu/gorm/dialects/sqlite"
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)
// ValidationError is error that holds multiple validation error messages
type ValidationError struct {
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// List of validation errors
// Example: ["phone number is too short", "email address is wrongly formated"]
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Errors []string
}
func (v ValidationError) Error() string {
return strings.Join(v.Errors, "\n")
}
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// Label holds metadata about the application
type Label struct {
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// Value of the label
// Example: userid:1
// Required: true
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Value string `json:"value"`
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AppID uint `json:"-" gorm:"not null"`
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}
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// AppState contains info about runnint application, it's not saved in the database
type AppState struct {
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State string `json:"state"`
CPUUsage float64 `json:"cpu_usage"` // in percents
MemoryUsage int `json:"memory_usage"` // in MB
DiskUsageBytes int `json:"disk_usage_bytes"`
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DiskUsageInodes int `json:"disk_usage_inodes"`
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}
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// Apps is list of applications
type Apps []App
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// App keeps info about hosted application
type App struct {
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// ID of the applicaton
// Unique: true
ID uint `gorm:"primary_key" json:"id"`
// Datetime of creation
CreatedAt time.Time `json:"created_at"`
// Datetime of last update
UpdatedAt time.Time `json:"updated_at"`
// Datetime of deletion
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DeletedAt *time.Time `sql:"index" json:"deleted_at"`
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// Name of the application
// Example: test_1234
Name string `json:"name" gorm:"unique,index,not_null"`
// SSH port where the application will be available
// Unique: true
// Example: 10001
SSHPort int `json:"ssh_port"`
// HTTP port where the application will be available
// Unique: true
// Example: 10002
HTTPPort int `json:"http_port"`
// Runtime image
Image string `json:"image"`
// Number of CPUs ticks assigned, 100 means one CPU, 200 are two
CPU int `json:"cpu"` // percentage, 200 means two CPU
// Memory limit in MB
Memory int `json:"memory"` // Limit in MB
// Custom labels
Labels []Label `json:"labels" gorm:"foreignkey:AppID"` // username:cx or user_id:1
// Current status of the application (underlaying container)
State string `json:"state"`
// CPU usage in percents
CPUUsage float64 `json:"cpu_usage"` // in percents
// Memory usage in bytes
MemoryUsage int `json:"memory_usage"` // in B
// Disk usage in bytes
DiskUsageBytes int `json:"disk_usage_bytes"`
// Disk usage in inodes
DiskUsageInodes int `json:"disk_usage_inodes"`
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}
// Validate do basic checks of the struct values
func (a *App) Validate() []string {
var errors []string
nameRegExp := regexp.MustCompile(`^[a-z0-9_]{3,48}$`)
if !nameRegExp.MatchString(a.Name) {
errors = append(errors, "name can contain only characters, numbers and underscores and has to be between 3 and 48 characters")
}
if a.SSHPort < 0 && a.SSHPort > 65536 {
errors = append(errors, "SSH port has to be between 0 and 65536, where 0 means disabled")
}
if a.HTTPPort < 1 && a.HTTPPort > 65536 {
errors = append(errors, "HTTP port has to be between 1 and 65536")
}
if a.Image == "" {
errors = append(errors, "image cannot be empty")
}
if a.CPU < 10 && a.CPU > 800 {
errors = append(errors, "CPU value has be between 10 and 800")
}
if a.Memory < 32 && a.Memory > 16384 {
errors = append(errors, "Memory value has be between 32 and 16384")
}
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return errors
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}