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cache_test.go
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package solver
import (
"context"
"testing"
"time"
"github.com/moby/buildkit/identity"
digest "github.com/opencontainers/go-digest"
"github.com/stretchr/testify/require"
)
func depKeys(cks ...ExportableCacheKey) []CacheKeyWithSelector {
var keys []CacheKeyWithSelector
for _, ck := range cks {
keys = append(keys, CacheKeyWithSelector{CacheKey: ck})
}
return keys
}
func testCacheKey(dgst digest.Digest, output Index, deps ...ExportableCacheKey) *CacheKey {
k := NewCacheKey(dgst, "", output)
k.deps = make([][]CacheKeyWithSelector, len(deps))
for i, dep := range deps {
k.deps[i] = depKeys(dep)
}
return k
}
func testCacheKeyWithDeps(dgst digest.Digest, output Index, deps [][]CacheKeyWithSelector) *CacheKey {
k := NewCacheKey(dgst, "", output)
k.deps = deps
return k
}
func expKey(k *CacheKey) ExportableCacheKey {
return ExportableCacheKey{CacheKey: k, Exporter: &exporter{k: k}}
}
func TestInMemoryCache(t *testing.T) {
ctx := context.TODO()
m := NewInMemoryCacheManager()
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), testResult("result0"), time.Now())
require.NoError(t, err)
keys, err := m.Query(nil, 0, dgst("foo"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err := m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err := m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result0", unwrap(res))
// another record
cacheBar, err := m.Save(NewCacheKey(dgst("bar"), "", 0), testResult("result1"), time.Now())
require.NoError(t, err)
keys, err = m.Query(nil, 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err = m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result1", unwrap(res))
// invalid request
keys, err = m.Query(nil, 0, dgst("baz"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
// second level
k := testCacheKey(dgst("baz"), Index(1), *cacheFoo, *cacheBar)
cacheBaz, err := m.Save(k, testResult("result2"), time.Now())
require.NoError(t, err)
keys, err = m.Query(nil, 0, dgst("baz"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query(depKeys(*cacheFoo), 0, dgst("baz"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query(depKeys(*cacheFoo), 1, dgst("baz"), Index(1))
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query(depKeys(*cacheFoo), 0, dgst("baz"), Index(1))
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err = m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result2", unwrap(res))
keys2, err := m.Query(depKeys(*cacheBar), 1, dgst("baz"), Index(1))
require.NoError(t, err)
require.Equal(t, len(keys2), 1)
require.Equal(t, keys[0].ID, keys2[0].ID)
k = testCacheKey(dgst("baz"), Index(1), *cacheFoo)
_, err = m.Save(k, testResult("result3"), time.Now())
require.NoError(t, err)
keys, err = m.Query(depKeys(*cacheFoo), 0, dgst("baz"), Index(1))
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 2)
k = testCacheKeyWithDeps(dgst("bax"), 0, [][]CacheKeyWithSelector{
{{CacheKey: *cacheFoo}, {CacheKey: *cacheBaz}},
{{CacheKey: *cacheBar}},
})
_, err = m.Save(k, testResult("result4"), time.Now())
require.NoError(t, err)
// foo, bar, baz should all point to result4
keys, err = m.Query(depKeys(*cacheFoo), 0, dgst("bax"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
id := keys[0].ID
keys, err = m.Query(depKeys(*cacheBar), 1, dgst("bax"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
require.Equal(t, keys[0].ID, id)
keys, err = m.Query(depKeys(*cacheBaz), 0, dgst("bax"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
require.Equal(t, keys[0].ID, id)
}
func TestInMemoryCacheSelector(t *testing.T) {
ctx := context.TODO()
m := NewInMemoryCacheManager()
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), testResult("result0"), time.Now())
require.NoError(t, err)
_, err = m.Save(testCacheKeyWithDeps(dgst("bar"), 0, [][]CacheKeyWithSelector{
{{CacheKey: *cacheFoo, Selector: dgst("sel0")}},
}), testResult("result1"), time.Now())
require.NoError(t, err)
keys, err := m.Query(depKeys(*cacheFoo), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query([]CacheKeyWithSelector{{Selector: "sel-invalid", CacheKey: *cacheFoo}}, 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query([]CacheKeyWithSelector{{Selector: dgst("sel0"), CacheKey: *cacheFoo}}, 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err := m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err := m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result1", unwrap(res))
}
func TestInMemoryCacheSelectorNested(t *testing.T) {
ctx := context.TODO()
m := NewInMemoryCacheManager()
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), testResult("result0"), time.Now())
require.NoError(t, err)
_, err = m.Save(testCacheKeyWithDeps(dgst("bar"), 0, [][]CacheKeyWithSelector{
{{CacheKey: *cacheFoo, Selector: dgst("sel0")}, {CacheKey: expKey(NewCacheKey(dgst("second"), "", 0))}},
}), testResult("result1"), time.Now())
require.NoError(t, err)
keys, err := m.Query(
[]CacheKeyWithSelector{{Selector: dgst("sel0"), CacheKey: *cacheFoo}},
0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err := m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err := m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result1", unwrap(res))
keys, err = m.Query(depKeys(*cacheFoo), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query([]CacheKeyWithSelector{{Selector: dgst("bar"), CacheKey: *cacheFoo}}, 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
keys, err = m.Query(depKeys(expKey(NewCacheKey(dgst("second"), "", 0))), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
res, err = m.Load(ctx, matches[0])
require.NoError(t, err)
require.Equal(t, "result1", unwrap(res))
keys, err = m.Query(depKeys(expKey(NewCacheKey(dgst("second"), "", 0))), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
}
func TestInMemoryCacheReleaseParent(t *testing.T) {
storage := NewInMemoryCacheStorage()
results := NewInMemoryResultStorage()
m := NewCacheManager(context.TODO(), identity.NewID(), storage, results)
res0 := testResult("result0")
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), res0, time.Now())
require.NoError(t, err)
res1 := testResult("result1")
_, err = m.Save(testCacheKey(dgst("bar"), 0, *cacheFoo), res1, time.Now())
require.NoError(t, err)
keys, err := m.Query(nil, 0, dgst("foo"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err := m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
err = storage.Release(res0.ID())
require.NoError(t, err)
// foo becomes unloadable
keys, err = m.Query(nil, 0, dgst("foo"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 0)
keys, err = m.Query(depKeys(expKey(keys[0])), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
// releasing bar releases both foo and bar
err = storage.Release(res1.ID())
require.NoError(t, err)
keys, err = m.Query(nil, 0, dgst("foo"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 0)
}
// TestInMemoryCacheRestoreOfflineDeletion deletes a result while the
// cachemanager is not running and checks that it syncs up on restore
func TestInMemoryCacheRestoreOfflineDeletion(t *testing.T) {
storage := NewInMemoryCacheStorage()
results := NewInMemoryResultStorage()
m := NewCacheManager(context.TODO(), identity.NewID(), storage, results)
res0 := testResult("result0")
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), res0, time.Now())
require.NoError(t, err)
res1 := testResult("result1")
_, err = m.Save(testCacheKey(dgst("bar"), 0, *cacheFoo), res1, time.Now())
require.NoError(t, err)
results2 := NewInMemoryResultStorage()
_, err = results2.Save(res1, time.Now()) // only add bar
require.NoError(t, err)
m = NewCacheManager(context.TODO(), identity.NewID(), storage, results2)
keys, err := m.Query(nil, 0, dgst("foo"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err := m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 0)
keys, err = m.Query(depKeys(expKey(keys[0])), 0, dgst("bar"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
matches, err = m.Records(context.TODO(), keys[0])
require.NoError(t, err)
require.Equal(t, len(matches), 1)
}
func TestCarryOverFromSublink(t *testing.T) {
storage := NewInMemoryCacheStorage()
results := NewInMemoryResultStorage()
m := NewCacheManager(context.TODO(), identity.NewID(), storage, results)
cacheFoo, err := m.Save(NewCacheKey(dgst("foo"), "", 0), testResult("resultFoo"), time.Now())
require.NoError(t, err)
_, err = m.Save(testCacheKeyWithDeps(dgst("res"), 0, [][]CacheKeyWithSelector{
{{CacheKey: *cacheFoo, Selector: dgst("sel0")}, {CacheKey: expKey(NewCacheKey(dgst("content0"), "", 0))}},
}), testResult("result0"), time.Now())
require.NoError(t, err)
cacheBar, err := m.Save(NewCacheKey(dgst("bar"), "", 0), testResult("resultBar"), time.Now())
require.NoError(t, err)
keys, err := m.Query([]CacheKeyWithSelector{
{CacheKey: *cacheBar, Selector: dgst("sel0")},
{CacheKey: expKey(NewCacheKey(dgst("content0"), "", 0))},
}, 0, dgst("res"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
keys, err = m.Query([]CacheKeyWithSelector{
{Selector: dgst("sel0"), CacheKey: *cacheBar},
}, 0, dgst("res"), 0)
require.NoError(t, err)
require.Equal(t, len(keys), 1)
}
func dgst(s string) digest.Digest {
return digest.FromBytes([]byte(s))
}
func testResult(v string) Result {
return &dummyResult{
id: identity.NewID(),
value: v,
}
}