Timothy Messier
8caaf3e076
This refactors the schema package and subpackages to support editions.
An Edition is a collection of sql migrations. A given boundary binary
can have multiple migration editions. The `schema.Manager` is updated to
apply the necessary migrations in the correct order, leveraging an
Edition's priority to determine the order in which the separate Editions
are applied.
The sql migration files are now nested under a directory for the
edition.
This also switches from the generated code to using embed, which
eliminates the need for the `make migrations` target and the generated
code. As such this commit removes the target and generated code.
See:
https://pkg.go.dev/embed
69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package schema
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import (
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"embed"
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"fmt"
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"sync"
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"github.com/hashicorp/boundary/internal/db/schema/internal/edition"
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)
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// Dialect is same as edition.Dialect
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type Dialect = edition.Dialect
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// Supported dialects.
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const (
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Postgres Dialect = "postgres"
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)
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var supportedDialects = map[Dialect]struct{}{
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Postgres: struct{}{},
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}
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// type dialects map[Dialect]edition.Editions
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type dialects struct {
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sync.Mutex
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m map[Dialect]edition.Editions
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}
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var editions = dialects{
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m: make(map[Dialect]edition.Editions),
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}
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// RegisterEdition registers an edition for use by the Manager. It will panic if:
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// - An unsupported dialect is provided.
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// - The same (dialect, name) is registered.
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// - The same (dialect, priority) is registered.
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func RegisterEdition(name string, dialect Dialect, fs embed.FS, priority int) {
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editions.Lock()
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defer editions.Unlock()
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if _, ok := supportedDialects[dialect]; !ok {
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panic(fmt.Sprintf("unsupported dialect: %s", dialect))
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}
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var e edition.Editions
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var ok bool
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e, ok = editions.m[dialect]
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if !ok {
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e = make(edition.Editions, 0)
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}
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for _, ee := range e {
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if ee.Name == name {
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panic(fmt.Sprintf("edition %s with dialect %s already registered", name, dialect))
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}
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if ee.Priority == priority {
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panic(fmt.Sprintf("edition %s with dialect %s and priority %d has same priority as edition %s", name, dialect, priority, ee.Name))
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}
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}
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e = append(e, edition.New(name, dialect, fs, priority))
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e.Sort()
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editions.m[dialect] = e
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}
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