logger boshlog.Logger
retryableBlobstore boshblob.Blobstore
)
BeforeEach(func() {
innerBlobstore = &fakeblob.FakeBlobstore{}
logger = boshlog.NewLogger(boshlog.LevelNone)
retryableBlobstore = boshblob.NewRetryableBlobstore(innerBlobstore, 3, logger)
})
Describe("Get", func() {
Context("when inner blobstore succeeds before maximum number of get tries (first time)", func() {
It("returns path without an error", func() {
innerBlobstore.GetFileName = "fake-path"
path, err := retryableBlobstore.Get("fake-blob-id", "fake-fingerprint")
Expect(err).ToNot(HaveOccurred())
Expect(path).To(Equal("fake-path"))
Expect(innerBlobstore.GetBlobIDs).To(Equal([]string{"fake-blob-id"}))
Expect(innerBlobstore.GetFingerprints).To(Equal([]string{"fake-fingerprint"}))
})
})
Context("when inner blobstore succeed exactly at maximum number of get tries", func() {
It("returns path without an error", func() {
innerBlobstore.GetFileNames = []string{"", "", "fake-last-path"}
innerBlobstore.GetErrs = []error{
errors.New("fake-get-err-1"),
errors.New("fake-get-err-2"),
nil,
var (
innerBlobstore *fakeblob.FakeBlobstore
sha1VerifiableBlobstore boshblob.Blobstore
)
BeforeEach(func() {
innerBlobstore = &fakeblob.FakeBlobstore{}
sha1VerifiableBlobstore = boshblob.NewSHA1VerifiableBlobstore(innerBlobstore)
})
Describe("Get", func() {
It("returns without an error if sha1 matches", func() {
innerBlobstore.GetFileName = fixturePath
fileName, err := sha1VerifiableBlobstore.Get("fake-blob-id", fixtureSHA1)
Expect(err).ToNot(HaveOccurred())
Expect(innerBlobstore.GetBlobIDs).To(Equal([]string{"fake-blob-id"}))
Expect(fileName).To(Equal(fixturePath))
})
It("returns error if sha1 does not match", func() {
innerBlobstore.GetFileName = fixturePath
incorrectSha1 := "some-incorrect-sha1"
_, err := sha1VerifiableBlobstore.Get("fake-blob-id", incorrectSha1)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("SHA1 mismatch"))
})
)
BeforeEach(func() {
innerBlobstore = &fakeblob.FakeBlobstore{}
blobManager = &fakeblob.FakeBlobManagerInterface{}
logger := boshlog.NewLogger(boshlog.LevelNone)
cascadingBlobstore = blobstore.NewCascadingBlobstore(innerBlobstore, blobManager, logger)
})
Describe("Get", func() {
Describe("when blobManager returns the file path", func() {
It("returns the path provided by the blobManager", func() {
blobManager.GetPathReturns("/path/to-copy/of-blob", nil)
filename, err := cascadingBlobstore.Get("blobID", boshcrypto.NewDigest("sha1", "fake-checksum"))
Expect(err).To(BeNil())
Expect(filename).To(Equal("/path/to-copy/of-blob"))
Expect(blobManager.GetPathCallCount()).To(Equal(1))
Expect(blobManager.GetPathArgsForCall(0)).To(Equal("blobID"))
Expect(innerBlobstore.GetBlobIDs).Should(BeEmpty())
})
})
Describe("when blobManager returns an error", func() {
It("delegates the action of getting the blob to inner blobstore", func() {
blobID := "smurf-4"
digest := boshcrypto.NewDigest("sha1", "smurf-4-sha")
logger boshlog.Logger
retryableBlobstore boshblob.Blobstore
)
BeforeEach(func() {
innerBlobstore = &fakeblob.FakeBlobstore{}
logger = boshlog.NewLogger(boshlog.LevelNone)
retryableBlobstore = boshblob.NewRetryableBlobstore(innerBlobstore, 3, logger)
})
Describe("Get", func() {
Context("when inner blobstore succeeds before maximum number of get tries (first time)", func() {
It("returns path without an error", func() {
innerBlobstore.GetFileName = "fake-path"
path, err := retryableBlobstore.Get("fake-blob-id", boshcrypto.NewDigest("fake", "fingerprint"))
Expect(err).ToNot(HaveOccurred())
Expect(path).To(Equal("fake-path"))
Expect(innerBlobstore.GetBlobIDs).To(Equal([]string{"fake-blob-id"}))
Expect(innerBlobstore.GetFingerprints).To(Equal([]boshcrypto.Digest{boshcrypto.NewDigest("fake", "fingerprint")}))
})
})
Context("when inner blobstore succeed exactly at maximum number of get tries", func() {
It("returns path without an error", func() {
innerBlobstore.GetFileNames = []string{"", "", "fake-last-path"}
innerBlobstore.GetErrs = []error{
errors.New("fake-get-err-1"),
errors.New("fake-get-err-2"),
nil,
checksumProvider boshcrypto.DigestProvider
fixtureDigest boshcrypto.Digest
)
BeforeEach(func() {
fixtureDigest = boshcrypto.NewDigest(boshcrypto.DigestAlgorithmSHA1, fixtureSHA1)
innerBlobstore = &fakeblob.FakeBlobstore{}
checksumProvider = boshcrypto.NewDigestProvider(fakesys.NewFakeFileSystem())
checksumVerifiableBlobstore = boshblob.NewDigestVerifiableBlobstore(innerBlobstore, checksumProvider)
})
Describe("Get", func() {
It("returns without an error if sha1 matches", func() {
innerBlobstore.GetFileName = fixturePath
fileName, err := checksumVerifiableBlobstore.Get("fake-blob-id", fixtureDigest)
Expect(err).ToNot(HaveOccurred())
Expect(innerBlobstore.GetBlobIDs).To(Equal([]string{"fake-blob-id"}))
Expect(fileName).To(Equal(fixturePath))
})
It("returns error if sha1 does not match", func() {
innerBlobstore.GetFileName = fixturePath
incorrectSha1 := boshcrypto.NewDigest(boshcrypto.DigestAlgorithmSHA1, "some-incorrect-sha1")
_, err := checksumVerifiableBlobstore.Get("fake-blob-id", incorrectSha1)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Expected sha1 digest"))
})