Exemple #1
0
// fetchAndCacheTools fetches tools with the specified version by searching for a URL
// in simplestreams and GETting it, caching the result in toolstorage before returning
// to the caller.
func (h *toolsDownloadHandler) fetchAndCacheTools(v version.Binary, stor toolstorage.Storage, st *state.State) (io.ReadCloser, error) {
	envcfg, err := st.EnvironConfig()
	if err != nil {
		return nil, err
	}
	env, err := environs.New(envcfg)
	if err != nil {
		return nil, err
	}
	tools, err := envtools.FindExactTools(env, v.Number, v.Series, v.Arch)
	if err != nil {
		return nil, err
	}

	// No need to verify the server's identity because we verify the SHA-256 hash.
	logger.Infof("fetching %v tools from %v", v, tools.URL)
	resp, err := utils.GetNonValidatingHTTPClient().Get(tools.URL)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		msg := fmt.Sprintf("bad HTTP response: %v", resp.Status)
		if body, err := ioutil.ReadAll(resp.Body); err == nil {
			msg += fmt.Sprintf(" (%s)", bytes.TrimSpace(body))
		}
		return nil, errors.New(msg)
	}
	data, sha256, err := readAndHash(resp.Body)
	if err != nil {
		return nil, err
	}
	if int64(len(data)) != tools.Size {
		return nil, errors.Errorf("size mismatch for %s", tools.URL)
	}
	if sha256 != tools.SHA256 {
		return nil, errors.Errorf("hash mismatch for %s", tools.URL)
	}

	// Cache tarball in toolstorage before returning.
	metadata := toolstorage.Metadata{
		Version: v,
		Size:    tools.Size,
		SHA256:  tools.SHA256,
	}
	if err := stor.AddTools(bytes.NewReader(data), metadata); err != nil {
		return nil, errors.Annotate(err, "error caching tools")
	}
	return ioutil.NopCloser(bytes.NewReader(data)), nil
}
Exemple #2
0
func (t *ToolsGetter) oneAgentTools(canRead AuthFunc, tag string, agentVersion version.Number, env environs.Environ) (*coretools.Tools, error) {
	if !canRead(tag) {
		return nil, ErrPerm
	}
	entity, err := t.st.FindEntity(tag)
	if err != nil {
		return nil, err
	}
	tooler, ok := entity.(state.AgentTooler)
	if !ok {
		return nil, NotSupportedError(tag, "agent tools")
	}
	existingTools, err := tooler.AgentTools()
	if err != nil {
		return nil, err
	}
	// TODO(jam): Avoid searching the provider for every machine
	// that wants to upgrade. The information could just be cached
	// in state, or even in the API servers
	return envtools.FindExactTools(env, agentVersion, existingTools.Version.Series, existingTools.Version.Arch)
}
Exemple #3
0
func (u *UnitUpgraderAPI) getMachineTools(tag string) params.ToolsResult {
	var result params.ToolsResult
	machine, err := u.getAssignedMachine(tag)
	if err != nil {
		result.Error = common.ServerError(err)
		return result
	}
	machineTools, err := machine.AgentTools()
	if err != nil {
		result.Error = common.ServerError(err)
		return result
	}
	// For older 1.16 upgrader workers, we need to supply a tools URL since the worker will attempt to
	// download the tools even though they already have been fetched by the machine agent. Newer upgrader
	// workers do not have this problem. So to be compatible across all versions, we return the full
	// tools metadata.
	// TODO (wallyworld) - remove in 1.20, just return machineTools
	cfg, err := u.st.EnvironConfig()
	if err != nil {
		result.Error = common.ServerError(err)
		return result
	}
	// SSLHostnameVerification defaults to true, so we need to
	// invert that, for backwards-compatibility (older versions
	// will have DisableSSLHostnameVerification: false by default).
	result.DisableSSLHostnameVerification = !cfg.SSLHostnameVerification()
	env, err := environs.New(cfg)
	if err != nil {
		result.Error = common.ServerError(err)
		return result
	}
	agentTools, err := envtools.FindExactTools(
		env, machineTools.Version.Number, machineTools.Version.Series, machineTools.Version.Arch)
	if err != nil {
		result.Error = common.ServerError(err)
		return result
	}
	result.Tools = agentTools
	return result
}
Exemple #4
0
func (s *SimpleStreamsToolsSuite) TestFindExactTools(c *gc.C) {
	for i, test := range findExactToolsTests {
		c.Logf("\ntest %d: %s", i, test.info)
		s.reset(c, nil)
		custom := s.uploadCustom(c, test.custom...)
		public := s.uploadPublic(c, test.public...)
		actual, err := envtools.FindExactTools(s.env, test.seek.Number, test.seek.Series, test.seek.Arch)
		if test.err == nil {
			if !c.Check(err, jc.ErrorIsNil) {
				continue
			}
			c.Check(actual.Version, gc.Equals, test.seek)
			if _, ok := custom[actual.Version]; ok {
				c.Check(actual.URL, gc.DeepEquals, custom[actual.Version])
			} else {
				c.Check(actual.URL, gc.DeepEquals, public[actual.Version])
			}
		} else {
			c.Check(err, jc.Satisfies, errors.IsNotFound)
		}
	}
}
Exemple #5
0
// MachineConfig returns information from the environment config that
// is needed for machine cloud-init (for non-state servers only). It
// is exposed for testing purposes.
// TODO(rog) fix environs/manual tests so they do not need to call this, or move this elsewhere.
func MachineConfig(st *state.State, machineId, nonce, dataDir string) (*cloudinit.MachineConfig, error) {
	environConfig, err := st.EnvironConfig()
	if err != nil {
		return nil, err
	}

	// Get the machine so we can get its series and arch.
	// If the Arch is not set in hardware-characteristics,
	// an error is returned.
	machine, err := st.Machine(machineId)
	if err != nil {
		return nil, err
	}
	hc, err := machine.HardwareCharacteristics()
	if err != nil {
		return nil, err
	}
	if hc.Arch == nil {
		return nil, fmt.Errorf("arch is not set for %q", machine.Tag())
	}

	// Find the appropriate tools information.
	env, err := environs.New(environConfig)
	if err != nil {
		return nil, err
	}
	agentVersion, ok := env.Config().AgentVersion()
	if !ok {
		return nil, errors.New("no agent version set in environment configuration")
	}
	tools, err := envtools.FindExactTools(env, agentVersion, machine.Series(), *hc.Arch)
	if err != nil {
		return nil, err
	}

	// Find the API endpoints.
	apiInfo, err := environs.APIInfo(env)
	if err != nil {
		return nil, err
	}

	auth := authentication.NewAuthenticator(st.MongoConnectionInfo(), apiInfo)
	mongoInfo, apiInfo, err := auth.SetupAuthentication(machine)
	if err != nil {
		return nil, err
	}

	// Find requested networks.
	networks, err := machine.RequestedNetworks()
	if err != nil {
		return nil, err
	}

	mcfg, err := environs.NewMachineConfig(machineId, nonce, env.Config().ImageStream(), machine.Series(), networks, mongoInfo, apiInfo)
	if err != nil {
		return nil, err
	}
	if dataDir != "" {
		mcfg.DataDir = dataDir
	}
	mcfg.Tools = tools
	err = environs.FinishMachineConfig(mcfg, environConfig)
	if err != nil {
		return nil, err
	}
	return mcfg, nil
}