120 lines
3.3 KiB
Go
120 lines
3.3 KiB
Go
package mysql
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import (
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"database/sql"
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"fmt"
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_ "github.com/go-sql-driver/mysql"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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)
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func pathConfigConnection(b *backend) *framework.Path {
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return &framework.Path{
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Pattern: "config/connection",
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Fields: map[string]*framework.FieldSchema{
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"connection_url": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "DB connection string",
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},
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"value": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: `
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DB connection string. Use 'connection_url' instead.
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This name is deprecated.`,
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},
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"max_open_connections": &framework.FieldSchema{
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Type: framework.TypeInt,
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Description: "Maximum number of open connections to database",
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},
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"verify_connection": &framework.FieldSchema{
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Type: framework.TypeBool,
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Default: true,
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Description: "If set, connection_url is verified by actually connecting to the database",
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.UpdateOperation: b.pathConnectionWrite,
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},
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HelpSynopsis: pathConfigConnectionHelpSyn,
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HelpDescription: pathConfigConnectionHelpDesc,
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}
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}
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func (b *backend) pathConnectionWrite(
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req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
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connValue := data.Get("value").(string)
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connURL := data.Get("connection_url").(string)
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if connURL == "" {
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if connValue == "" {
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return logical.ErrorResponse("the connection_url parameter must be supplied"), nil
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} else {
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connURL = connValue
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}
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}
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maxOpenConns := data.Get("max_open_connections").(int)
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if maxOpenConns == 0 {
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maxOpenConns = 2
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}
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// Don't check the connection_url if verification is disabled
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verifyConnection := data.Get("verify_connection").(bool)
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if verifyConnection {
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// Verify the string
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db, err := sql.Open("mysql", connURL)
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if err != nil {
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return logical.ErrorResponse(fmt.Sprintf(
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"error validating connection info: %s", err)), nil
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}
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defer db.Close()
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if err := db.Ping(); err != nil {
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return logical.ErrorResponse(fmt.Sprintf(
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"error validating connection info: %s", err)), nil
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}
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}
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// Store it
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entry, err := logical.StorageEntryJSON("config/connection", connectionConfig{
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ConnectionURL: connURL,
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MaxOpenConnections: maxOpenConns,
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})
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if err != nil {
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return nil, err
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}
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if err := req.Storage.Put(entry); err != nil {
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return nil, err
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}
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// Reset the DB connection
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b.ResetDB()
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return nil, nil
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}
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type connectionConfig struct {
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ConnectionURL string `json:"connection_url"`
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// Deprecate "value" in coming releases
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ConnectionString string `json:"value"`
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MaxOpenConnections int `json:"max_open_connections"`
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}
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const pathConfigConnectionHelpSyn = `
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Configure the connection string to talk to MySQL.
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`
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const pathConfigConnectionHelpDesc = `
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This path configures the connection string used to connect to MySQL. The value
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of the string is a Data Source Name (DSN). An example is using
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"username:password@protocol(address)/dbname?param=value"
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For example, RDS may look like:
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"id:password@tcp(your-amazonaws-uri.com:3306)/dbname"
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When configuring the connection string, the backend will verify its validity.
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If the database is not available when setting the connection URL, set the
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"verify_connection" option to false.
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`
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