databases

package
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 Go to latest Published: Jan 25, 2026 License: Apache-2.0 Imports: 3 Imported by: 0

Documentation

Overview

Package databases provides database flake template registry and configuration.

Index

Constants

This section is empty.

Variables

View Source 
var Registry = map[DatabaseType]DatabaseTemplate{
	DatabaseTypePostgres: {
		Type:              DatabaseTypePostgres,
		DisplayName:       "PostgreSQL",
		Description:       "Advanced open-source relational database",
		DefaultVersion:    "16",
		AvailableVersions: []string{"14", "15", "16", "17"},
		TemplateName:      "postgres.nix",
		DefaultPort:       5432,
		ConfigOptions: []ConfigOption{
			{Name: "storage_size", Type: "string", Default: "10Gi", Description: "Storage size for database data"},
			{Name: "max_connections", Type: "int", Default: "100", Description: "Maximum number of connections"},
			{Name: "shared_buffers", Type: "string", Default: "128MB", Description: "Shared buffer memory"},
			{Name: "backup_schedule", Type: "string", Default: "0 2 * * *", Description: "Cron schedule for backups"},
		},
	},
	DatabaseTypeMySQL: {
		Type:              DatabaseTypeMySQL,
		DisplayName:       "MySQL",
		Description:       "Popular open-source relational database",
		DefaultVersion:    "8.0",
		AvailableVersions: []string{"5.7", "8.0", "8.4"},
		TemplateName:      "mysql.nix",
		DefaultPort:       3306,
		ConfigOptions: []ConfigOption{
			{Name: "storage_size", Type: "string", Default: "10Gi", Description: "Storage size for database data"},
			{Name: "innodb_buffer_pool_size", Type: "string", Default: "128M", Description: "InnoDB buffer pool size"},
			{Name: "max_connections", Type: "int", Default: "151", Description: "Maximum number of connections"},
			{Name: "backup_schedule", Type: "string", Default: "0 2 * * *", Description: "Cron schedule for backups"},
		},
	},
	DatabaseTypeMariaDB: {
		Type:              DatabaseTypeMariaDB,
		DisplayName:       "MariaDB",
		Description:       "Community-developed fork of MySQL",
		DefaultVersion:    "11",
		AvailableVersions: []string{"10.6", "10.11", "11"},
		TemplateName:      "mariadb.nix",
		DefaultPort:       3306,
		ConfigOptions: []ConfigOption{
			{Name: "storage_size", Type: "string", Default: "10Gi", Description: "Storage size for database data"},
			{Name: "innodb_buffer_pool_size", Type: "string", Default: "128M", Description: "InnoDB buffer pool size"},
			{Name: "max_connections", Type: "int", Default: "151", Description: "Maximum number of connections"},
			{Name: "backup_schedule", Type: "string", Default: "0 2 * * *", Description: "Cron schedule for backups"},
		},
	},
	DatabaseTypeMongoDB: {
		Type:              DatabaseTypeMongoDB,
		DisplayName:       "MongoDB",
		Description:       "Document-oriented NoSQL database",
		DefaultVersion:    "7.0",
		AvailableVersions: []string{"6.0", "7.0"},
		TemplateName:      "mongodb.nix",
		DefaultPort:       27017,
		ConfigOptions: []ConfigOption{
			{Name: "storage_size", Type: "string", Default: "10Gi", Description: "Storage size for database data"},
			{Name: "wired_tiger_cache_size", Type: "string", Default: "256M", Description: "WiredTiger cache size"},
			{Name: "backup_schedule", Type: "string", Default: "0 2 * * *", Description: "Cron schedule for backups"},
		},
	},
	DatabaseTypeRedis: {
		Type:              DatabaseTypeRedis,
		DisplayName:       "Redis",
		Description:       "In-memory data structure store",
		DefaultVersion:    "7",
		AvailableVersions: []string{"6", "7"},
		TemplateName:      "redis.nix",
		DefaultPort:       6379,
		ConfigOptions: []ConfigOption{
			{Name: "maxmemory", Type: "string", Default: "256mb", Description: "Maximum memory limit"},
			{Name: "maxmemory_policy", Type: "string", Default: "allkeys-lru", Description: "Eviction policy when maxmemory is reached"},
			{Name: "appendonly", Type: "bool", Default: "yes", Description: "Enable append-only file persistence"},
			{Name: "backup_schedule", Type: "string", Default: "0 2 * * *", Description: "Cron schedule for backups"},
		},
	},
}

Registry contains all database templates indexed by type.

Functions

func GetBuildType 

func GetBuildType() models.BuildType

GetBuildType returns the build type for database services. Database services always use pure-nix build type, never OCI. **Validates: Requirements 11.2**

func GetDefaultConfig 

func GetDefaultConfig(dbType DatabaseType) map[string]string

GetDefaultConfig returns a map of default configuration values for a database type.

func GetDefaultPort 

func GetDefaultPort(dbType DatabaseType) int

GetDefaultPort returns the default port for a database type.

func GetDefaultVersion 

func GetDefaultVersion(dbType DatabaseType) string

GetDefaultVersion returns the default version for a database type.

func GetTemplateName 

func GetTemplateName(dbType DatabaseType) string

GetTemplateName returns the Nix template name for a database type.

func IsValidVersion 

func IsValidVersion(dbType DatabaseType, version string) bool

IsValidVersion checks if a version is valid for a database type.

Types

type ConfigOption 

type ConfigOption struct {
	Name        string `json:"name"`
	Type        string `json:"type"` // string, int, bool
	Default     string `json:"default"`
	Description string `json:"description,omitempty"`
	Required    bool   `json:"required,omitempty"`
}

ConfigOption defines a configuration option for a database template.

func GetConfigOptions 

func GetConfigOptions(dbType DatabaseType) []ConfigOption

GetConfigOptions returns the configuration options for a database type.

type DatabaseCredentials 

type DatabaseCredentials struct {
	Username     string `json:"username"`
	Password     string `json:"password"`
	DatabaseName string `json:"database_name"`
	Host         string `json:"host"`
	Port         int    `json:"port"`
	RootPassword string `json:"root_password,omitempty"` // For MySQL/MariaDB/MongoDB
}

DatabaseCredentials contains generated credentials for a database service.

func GenerateCredentials 

func GenerateCredentials(dbType DatabaseType, serviceName string) (*DatabaseCredentials, error)

GenerateCredentials generates connection credentials for a database service. **Validates: Requirements 11.9**

func (*DatabaseCredentials) GetConnectionURL 

func (c *DatabaseCredentials) GetConnectionURL(dbType DatabaseType) string

GetConnectionURL returns the connection URL for a database.

func (*DatabaseCredentials) GetSecretKeys 

func (c *DatabaseCredentials) GetSecretKeys(dbType DatabaseType, serviceName string) map[string]string

GetSecretKeys returns the secret keys that should be stored for this database.

type DatabaseTemplate 

type DatabaseTemplate struct {
	Type              DatabaseType   `json:"type"`
	DisplayName       string         `json:"display_name"`
	Description       string         `json:"description"`
	DefaultVersion    string         `json:"default_version"`
	AvailableVersions []string       `json:"available_versions"`
	TemplateName      string         `json:"template_name"` // Name of the .nix.tmpl file
	ConfigOptions     []ConfigOption `json:"config_options"`
	DefaultPort       int            `json:"default_port"`
}

DatabaseTemplate defines a database flake template configuration.

func GetTemplate 

func GetTemplate(dbType DatabaseType) (*DatabaseTemplate, error)

GetTemplate returns the database template for a given type.

func GetTemplateByString 

func GetTemplateByString(dbType string) (*DatabaseTemplate, error)

GetTemplateByString returns the database template for a given type string.

type DatabaseTemplateData 

type DatabaseTemplateData struct {
	AppName         string
	ServiceName     string
	DatabaseType    DatabaseType
	DatabaseVersion string
	System          string
	Config          map[string]string
}

DatabaseTemplateData contains data for rendering database templates.

func NewDatabaseTemplateData 

func NewDatabaseTemplateData(appName, serviceName string, dbType DatabaseType, version string) *DatabaseTemplateData

NewDatabaseTemplateData creates a new DatabaseTemplateData with defaults.

func (*DatabaseTemplateData) WithConfig 

func (d *DatabaseTemplateData) WithConfig(config map[string]string) *DatabaseTemplateData

WithConfig sets custom configuration values.

type DatabaseType 

type DatabaseType string

DatabaseType represents a supported database type. 

const (
	DatabaseTypePostgres DatabaseType = "postgres"
	DatabaseTypeMySQL    DatabaseType = "mysql"
	DatabaseTypeMariaDB  DatabaseType = "mariadb"
	DatabaseTypeMongoDB  DatabaseType = "mongodb"
	DatabaseTypeRedis    DatabaseType = "redis"
)

func ValidDatabaseTypes 

func ValidDatabaseTypes() []DatabaseType

ValidDatabaseTypes returns all valid database types.

func (DatabaseType) IsValid 

func (t DatabaseType) IsValid() bool

IsValid checks if the database type is valid.

Source Files

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