Golang tools.UnpackTools函数代码示例

func (t *ToolsSuite) TestChangeAgentTools(c *gc.C) {
	files := []*testing.TarFile{
		testing.NewTarFile("jujuc", agenttools.DirPerm, "juju executable"),
		testing.NewTarFile("jujud", agenttools.DirPerm, "jujuc executable"),
	}
	data, checksum := testing.TarGz(files...)
	testTools := &coretest.Tools{
		URL:     "http://foo/bar1",
		Version: version.MustParseBinary("1.2.3-quantal-amd64"),
		Size:    int64(len(data)),
		SHA256:  checksum,
	}
	err := agenttools.UnpackTools(t.dataDir, testTools, bytes.NewReader(data))
	c.Assert(err, jc.ErrorIsNil)

	gotTools, err := agenttools.ChangeAgentTools(t.dataDir, "testagent", testTools.Version)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(*gotTools, gc.Equals, *testTools)

	assertDirNames(c, t.toolsDir(), []string{"1.2.3-quantal-amd64", "testagent"})
	assertDirNames(c, agenttools.ToolsDir(t.dataDir, "testagent"), []string{"jujuc", "jujud", agenttools.ToolsFile})

	// Upgrade again to check that the link replacement logic works ok.
	files2 := []*testing.TarFile{
		testing.NewTarFile("quantal", agenttools.DirPerm, "foo content"),
		testing.NewTarFile("amd64", agenttools.DirPerm, "bar content"),
	}
	data2, checksum2 := testing.TarGz(files2...)
	tools2 := &coretest.Tools{
		URL:     "http://foo/bar2",
		Version: version.MustParseBinary("1.2.4-quantal-amd64"),
		Size:    int64(len(data2)),
		SHA256:  checksum2,
	}
	err = agenttools.UnpackTools(t.dataDir, tools2, bytes.NewReader(data2))
	c.Assert(err, jc.ErrorIsNil)

	gotTools, err = agenttools.ChangeAgentTools(t.dataDir, "testagent", tools2.Version)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(*gotTools, gc.Equals, *tools2)

	assertDirNames(c, t.toolsDir(), []string{"1.2.3-quantal-amd64", "1.2.4-quantal-amd64", "testagent"})
	assertDirNames(c, agenttools.ToolsDir(t.dataDir, "testagent"), []string{"quantal", "amd64", agenttools.ToolsFile})
}

// InstallFakeDownloadedTools creates and unpacks fake tools of the
// given version into the data directory specified.
func InstallFakeDownloadedTools(c *gc.C, dataDir string, vers version.Binary) *coretools.Tools {
	tgz, checksum := makeFakeTools(vers)
	agentTools := &coretools.Tools{
		Version: vers,
		Size:    int64(len(tgz)),
		SHA256:  checksum,
	}
	err := agenttools.UnpackTools(dataDir, agentTools, bytes.NewReader(tgz))
	c.Assert(err, jc.ErrorIsNil)
	return agentTools
}

// PrimeTools sets up the current version of the tools to vers and
// makes sure that they're available in the dataDir.
func PrimeTools(c *gc.C, stor storage.Storage, dataDir, toolsDir string, vers version.Binary) *coretools.Tools {
	err := os.RemoveAll(filepath.Join(dataDir, "tools"))
	c.Assert(err, jc.ErrorIsNil)
	agentTools, err := uploadFakeToolsVersion(stor, toolsDir, vers)
	c.Assert(err, jc.ErrorIsNil)
	resp, err := utils.GetValidatingHTTPClient().Get(agentTools.URL)
	c.Assert(err, jc.ErrorIsNil)
	defer resp.Body.Close()
	err = agenttools.UnpackTools(dataDir, agentTools, resp.Body)
	c.Assert(err, jc.ErrorIsNil)
	return agentTools
}

func (t *ToolsSuite) TestUnpackToolsBadChecksum(c *gc.C) {
	data, _ := testing.TarGz(testing.NewTarFile("tools", agenttools.DirPerm, "some data"))
	testTools := &coretest.Tools{
		URL:     "http://foo/bar",
		Version: version.MustParseBinary("1.2.3-quantal-amd64"),
		Size:    int64(len(data)),
		SHA256:  "1234",
	}
	err := agenttools.UnpackTools(t.dataDir, testTools, bytes.NewReader(data))
	c.Assert(err, gc.ErrorMatches, "tarball sha256 mismatch, expected 1234, got .*")
	_, err = os.Stat(t.toolsDir())
	c.Assert(err, gc.FitsTypeOf, &os.PathError{})
}

func (t *ToolsSuite) TestUnpackToolsBadData(c *gc.C) {
	for i, test := range unpackToolsBadDataTests {
		c.Logf("test %d", i)
		testTools := &coretest.Tools{
			URL:     "http://foo/bar",
			Version: version.MustParseBinary("1.2.3-quantal-amd64"),
			Size:    int64(len(test.data)),
			SHA256:  test.checksum,
		}
		err := agenttools.UnpackTools(t.dataDir, testTools, bytes.NewReader(test.data))
		c.Assert(err, gc.ErrorMatches, test.err)
		assertDirNames(c, t.toolsDir(), []string{})
	}
}

func (t *ToolsSuite) TestUnpackToolsContents(c *gc.C) {
	files := []*testing.TarFile{
		testing.NewTarFile("bar", agenttools.DirPerm, "bar contents"),
		testing.NewTarFile("foo", agenttools.DirPerm, "foo contents"),
	}
	data, checksum := testing.TarGz(files...)
	testTools := &coretest.Tools{
		URL:     "http://foo/bar",
		Version: version.MustParseBinary("1.2.3-quantal-amd64"),
		Size:    int64(len(data)),
		SHA256:  checksum,
	}

	err := agenttools.UnpackTools(t.dataDir, testTools, bytes.NewReader(data))
	c.Assert(err, jc.ErrorIsNil)
	assertDirNames(c, t.toolsDir(), []string{"1.2.3-quantal-amd64"})
	t.assertToolsContents(c, testTools, files)

	// Try to unpack the same version of tools again - it should succeed,
	// leaving the original version around.
	files2 := []*testing.TarFile{
		testing.NewTarFile("bar", agenttools.DirPerm, "bar2 contents"),
		testing.NewTarFile("x", agenttools.DirPerm, "x contents"),
	}
	data2, checksum2 := testing.TarGz(files2...)
	tools2 := &coretest.Tools{
		URL:     "http://arble",
		Version: version.MustParseBinary("1.2.3-quantal-amd64"),
		Size:    int64(len(data2)),
		SHA256:  checksum2,
	}
	err = agenttools.UnpackTools(t.dataDir, tools2, bytes.NewReader(data2))
	c.Assert(err, jc.ErrorIsNil)
	assertDirNames(c, t.toolsDir(), []string{"1.2.3-quantal-amd64"})
	t.assertToolsContents(c, testTools, files)
}

func (u *Upgrader) ensureTools(agentTools *coretools.Tools, hostnameVerification utils.SSLHostnameVerification) error {
	logger.Infof("fetching tools from %q", agentTools.URL)
	client := utils.GetHTTPClient(hostnameVerification)
	resp, err := client.Get(agentTools.URL)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("bad HTTP response: %v", resp.Status)
	}
	err = agenttools.UnpackTools(u.dataDir, agentTools, resp.Body)
	if err != nil {
		return fmt.Errorf("cannot unpack tools: %v", err)
	}
	logger.Infof("unpacked tools %s to %s", agentTools.Version, u.dataDir)
	return nil
}

func (u *Upgrader) ensureTools(agentTools *coretools.Tools) error {
	logger.Infof("fetching tools from %q", agentTools.URL)
	// The reader MUST verify the tools' hash, so there is no
	// need to validate the peer. We cannot anyway: see http://pad.lv/1261780.
	resp, err := utils.GetNonValidatingHTTPClient().Get(agentTools.URL)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("bad HTTP response: %v", resp.Status)
	}
	err = agenttools.UnpackTools(u.dataDir, agentTools, resp.Body)
	if err != nil {
		return fmt.Errorf("cannot unpack tools: %v", err)
	}
	logger.Infof("unpacked tools %s to %s", agentTools.Version, u.dataDir)
	return nil
}