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https://github.com/lightningnetwork/lnd.git
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f0911765af
In this commit, we migrate all the code in `channeldb` to only reference the new `kvdb` package rather than `bbolt` directly. In many instances, we need to add two version to fetch a bucket as both read and write when needed. As an example, we add a new `fetchChanBucketRw` function. This function is identical to `fetchChanBucket`, but it will be used to fetch the main channel bucket for all _write_ transactions. We need a new method as you can pass a write transaction where a read is accepted, but not the other way around due to the stronger typing of the new `kvdb` package.
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package migration_01_to_11
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import (
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"testing"
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"github.com/go-errors/errors"
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"github.com/lightningnetwork/lnd/channeldb/kvdb"
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)
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// applyMigration is a helper test function that encapsulates the general steps
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// which are needed to properly check the result of applying migration function.
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func applyMigration(t *testing.T, beforeMigration, afterMigration func(d *DB),
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migrationFunc migration, shouldFail bool) {
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cdb, cleanUp, err := makeTestDB()
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defer cleanUp()
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if err != nil {
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t.Fatal(err)
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}
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// Create a test node that will be our source node.
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testNode, err := createTestVertex(cdb)
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if err != nil {
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t.Fatal(err)
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}
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graph := cdb.ChannelGraph()
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if err := graph.SetSourceNode(testNode); err != nil {
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t.Fatal(err)
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}
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// beforeMigration usually used for populating the database
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// with test data.
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beforeMigration(cdb)
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defer func() {
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if r := recover(); r != nil {
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err = errors.New(r)
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}
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if err == nil && shouldFail {
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t.Fatal("error wasn't received on migration stage")
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} else if err != nil && !shouldFail {
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t.Fatalf("error was received on migration stage: %v", err)
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}
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// afterMigration usually used for checking the database state and
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// throwing the error if something went wrong.
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afterMigration(cdb)
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}()
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// Apply migration.
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err = kvdb.Update(cdb, func(tx kvdb.RwTx) error {
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return migrationFunc(tx)
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})
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if err != nil {
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log.Error(err)
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}
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}
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