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65 lines
2 KiB
Go
65 lines
2 KiB
Go
// Copyright 2014 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// NOTE ON FILENAME: Do not rename this file helpers_test.go (which might appear
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// an obvious choice). We need NewTestStorage in tests outside of the local
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// package, too. On the other hand, moving NewTestStorage in its own package
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// would cause circular dependencies in the tests in packages local.
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package local
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import (
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"time"
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"github.com/prometheus/prometheus/utility/test"
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)
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type testStorageCloser struct {
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storage Storage
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directory test.Closer
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}
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func (t *testStorageCloser) Close() {
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t.storage.Stop()
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t.directory.Close()
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}
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// NewTestStorage creates a storage instance backed by files in a temporary
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// directory. The returned storage is already in serving state. Upon closing the
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// returned test.Closer, the temporary directory is cleaned up.
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func NewTestStorage(t test.T, encoding chunkEncoding) (Storage, test.Closer) {
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*defaultChunkEncoding = int(encoding)
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directory := test.NewTemporaryDirectory("test_storage", t)
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o := &MemorySeriesStorageOptions{
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MemoryChunks: 1000000,
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MaxChunksToPersist: 1000000,
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PersistenceRetentionPeriod: 24 * time.Hour * 365 * 100, // Enough to never trigger purging.
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PersistenceStoragePath: directory.Path(),
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CheckpointInterval: time.Hour,
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}
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storage, err := NewMemorySeriesStorage(o)
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if err != nil {
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directory.Close()
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t.Fatalf("Error creating storage: %s", err)
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}
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storage.Start()
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closer := &testStorageCloser{
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storage: storage,
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directory: directory,
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}
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return storage, closer
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}
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