Golang schema.List函数代码示例

func importConstraintsV1(source map[string]interface{}) (*constraints, error) {
	fields := schema.Fields{
		"architecture":  schema.String(),
		"container":     schema.String(),
		"cpu-cores":     schema.Uint(),
		"cpu-power":     schema.Uint(),
		"instance-type": schema.String(),
		"memory":        schema.Uint(),
		"root-disk":     schema.Uint(),

		"spaces": schema.List(schema.String()),
		"tags":   schema.List(schema.String()),
	}
	// Some values don't have to be there.
	defaults := schema.Defaults{
		"architecture":  "",
		"container":     "",
		"cpu-cores":     uint64(0),
		"cpu-power":     uint64(0),
		"instance-type": "",
		"memory":        uint64(0),
		"root-disk":     uint64(0),

		"spaces": schema.Omit,
		"tags":   schema.Omit,
	}
	checker := schema.FieldMap(fields, defaults)

	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "constraints v1 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.

	return &constraints{
		Version:       1,
		Architecture_: valid["architecture"].(string),
		Container_:    valid["container"].(string),
		CpuCores_:     valid["cpu-cores"].(uint64),
		CpuPower_:     valid["cpu-power"].(uint64),
		InstanceType_: valid["instance-type"].(string),
		Memory_:       valid["memory"].(uint64),
		RootDisk_:     valid["root-disk"].(uint64),

		Spaces_: convertToStringSlice(valid["spaces"]),
		Tags_:   convertToStringSlice(valid["tags"]),
	}, nil
}

func blockdevice_2_0(source map[string]interface{}) (*blockdevice, error) {
	fields := schema.Fields{
		"resource_uri": schema.String(),

		"id":       schema.ForceInt(),
		"name":     schema.String(),
		"model":    schema.String(),
		"path":     schema.String(),
		"used_for": schema.String(),
		"tags":     schema.List(schema.String()),

		"block_size": schema.ForceUint(),
		"used_size":  schema.ForceUint(),
		"size":       schema.ForceUint(),

		"partitions": schema.List(schema.StringMap(schema.Any())),
	}
	checker := schema.FieldMap(fields, nil)
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, WrapWithDeserializationError(err, "blockdevice 2.0 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.

	partitions, err := readPartitionList(valid["partitions"].([]interface{}), partition_2_0)
	if err != nil {
		return nil, errors.Trace(err)
	}

	result := &blockdevice{
		resourceURI: valid["resource_uri"].(string),

		id:      valid["id"].(int),
		name:    valid["name"].(string),
		model:   valid["model"].(string),
		path:    valid["path"].(string),
		usedFor: valid["used_for"].(string),
		tags:    convertToStringSlice(valid["tags"]),

		blockSize: valid["block_size"].(uint64),
		usedSize:  valid["used_size"].(uint64),
		size:      valid["size"].(uint64),

		partitions: partitions,
	}
	return result, nil
}

func space_2_0(source map[string]interface{}) (*space, error) {
	fields := schema.Fields{
		"resource_uri": schema.String(),
		"id":           schema.ForceInt(),
		"name":         schema.String(),
		"subnets":      schema.List(schema.StringMap(schema.Any())),
	}
	checker := schema.FieldMap(fields, nil) // no defaults
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "space 2.0 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.

	subnets, err := readSubnetList(valid["subnets"].([]interface{}), subnet_2_0)
	if err != nil {
		return nil, errors.Trace(err)
	}

	result := &space{
		resourceURI: valid["resource_uri"].(string),
		id:          valid["id"].(int),
		name:        valid["name"].(string),
		subnets:     subnets,
	}
	return result, nil
}

func importStorageV1(source map[string]interface{}) (*storage, error) {
	fields := schema.Fields{
		"id":          schema.String(),
		"kind":        schema.String(),
		"owner":       schema.String(),
		"name":        schema.String(),
		"attachments": schema.List(schema.String()),
	}

	// Normally a list would have defaults, but in this case storage
	// should always have at least one attachment.
	checker := schema.FieldMap(fields, nil) // no defaults

	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "storage v1 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.
	result := &storage{
		ID_:          valid["id"].(string),
		Kind_:        valid["kind"].(string),
		Owner_:       valid["owner"].(string),
		Name_:        valid["name"].(string),
		Attachments_: convertToStringSlice(valid["attachments"]),
	}

	return result, nil
}

func (c *controller) readAPIVersion(apiVersion version.Number) (set.Strings, version.Number, error) {
	parsed, err := c.get("version")
	if err != nil {
		return nil, apiVersion, errors.Trace(err)
	}

	// As we care about other fields, add them.
	fields := schema.Fields{
		"capabilities": schema.List(schema.String()),
	}
	checker := schema.FieldMap(fields, nil) // no defaults
	coerced, err := checker.Coerce(parsed, nil)
	if err != nil {
		return nil, apiVersion, WrapWithDeserializationError(err, "version response")
	}
	// For now, we don't append any subversion, but as it becomes used, we
	// should parse and check.

	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.
	capabilities := set.NewStrings()
	capabilityValues := valid["capabilities"].([]interface{})
	for _, value := range capabilityValues {
		capabilities.Add(value.(string))
	}

	return capabilities, apiVersion, nil
}

func importPayloadV1(source map[string]interface{}) (*payload, error) {
	fields := schema.Fields{
		"name":   schema.String(),
		"type":   schema.String(),
		"raw-id": schema.String(),
		"state":  schema.String(),
		"labels": schema.List(schema.String()),
	}
	// Some values don't have to be there.
	defaults := schema.Defaults{
		"labels": schema.Omit,
	}
	checker := schema.FieldMap(fields, defaults)

	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "payload v1 schema check failed")
	}
	valid := coerced.(map[string]interface{})

	return &payload{
		Name_:   valid["name"].(string),
		Type_:   valid["type"].(string),
		RawID_:  valid["raw-id"].(string),
		State_:  valid["state"].(string),
		Labels_: convertToStringSlice(valid["labels"]),
	}, nil
}

func device_2_0(source map[string]interface{}) (*device, error) {
	fields := schema.Fields{
		"resource_uri": schema.String(),

		"system_id": schema.String(),
		"hostname":  schema.String(),
		"fqdn":      schema.String(),
		"parent":    schema.String(),
		"owner":     schema.String(),

		"ip_addresses":  schema.List(schema.String()),
		"interface_set": schema.List(schema.StringMap(schema.Any())),
		"zone":          schema.StringMap(schema.Any()),
	}
	checker := schema.FieldMap(fields, nil) // no defaults
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, WrapWithDeserializationError(err, "device 2.0 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.

	interfaceSet, err := readInterfaceList(valid["interface_set"].([]interface{}), interface_2_0)
	if err != nil {
		return nil, errors.Trace(err)
	}
	zone, err := zone_2_0(valid["zone"].(map[string]interface{}))
	if err != nil {
		return nil, errors.Trace(err)
	}

	result := &device{
		resourceURI: valid["resource_uri"].(string),

		systemID: valid["system_id"].(string),
		hostname: valid["hostname"].(string),
		fqdn:     valid["fqdn"].(string),
		parent:   valid["parent"].(string),
		owner:    valid["owner"].(string),

		ipAddresses:  convertToStringSlice(valid["ip_addresses"]),
		interfaceSet: interfaceSet,
		zone:         zone,
	}
	return result, nil
}

func versionedChecker(name string) schema.Checker {
	fields := schema.Fields{
		"version": schema.Int(),
	}
	if name != "" {
		fields[name] = schema.List(schema.StringMap(schema.Any()))
	}
	return schema.FieldMap(fields, nil) // no defaults
}

func readMachines(controllerVersion version.Number, source interface{}) ([]*machine, error) {
	readFunc, err := getMachineDeserializationFunc(controllerVersion)
	if err != nil {
		return nil, errors.Trace(err)
	}

	checker := schema.List(schema.StringMap(schema.Any()))
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, WrapWithDeserializationError(err, "machine base schema check failed")
	}
	valid := coerced.([]interface{})
	return readMachineList(valid, readFunc)
}

func importBlockDeviceV1(source map[string]interface{}) (*blockdevice, error) {
	fields := schema.Fields{
		"name":        schema.String(),
		"links":       schema.List(schema.String()),
		"label":       schema.String(),
		"uuid":        schema.String(),
		"hardware-id": schema.String(),
		"bus-address": schema.String(),
		"size":        schema.ForceUint(),
		"fs-type":     schema.String(),
		"in-use":      schema.Bool(),
		"mount-point": schema.String(),
	}

	defaults := schema.Defaults{
		"links":       schema.Omit,
		"label":       "",
		"uuid":        "",
		"hardware-id": "",
		"bus-address": "",
		"fs-type":     "",
		"mount-point": "",
	}
	checker := schema.FieldMap(fields, defaults)

	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "block device v1 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.
	result := &blockdevice{
		Name_:           valid["name"].(string),
		Links_:          convertToStringSlice(valid["links"]),
		Label_:          valid["label"].(string),
		UUID_:           valid["uuid"].(string),
		HardwareID_:     valid["hardware-id"].(string),
		BusAddress_:     valid["bus-address"].(string),
		Size_:           valid["size"].(uint64),
		FilesystemType_: valid["fs-type"].(string),
		InUse_:          valid["in-use"].(bool),
		MountPoint_:     valid["mount-point"].(string),
	}

	return result, nil
}

func (s *S) TestList(c *gc.C) {
	s.sch = schema.List(schema.Int())
	out, err := s.sch.Coerce([]int8{1, 2}, aPath)
	c.Assert(err, gc.IsNil)
	c.Assert(out, gc.DeepEquals, []interface{}{int64(1), int64(2)})

	out, err = s.sch.Coerce(42, aPath)
	c.Assert(out, gc.IsNil)
	c.Assert(err, gc.ErrorMatches, "<path>: expected list, got int\\(42\\)")

	out, err = s.sch.Coerce(nil, aPath)
	c.Assert(out, gc.IsNil)
	c.Assert(err, gc.ErrorMatches, "<path>: expected list, got nothing")

	out, err = s.sch.Coerce([]interface{}{1, true}, aPath)
	c.Assert(out, gc.IsNil)
	c.Assert(err, gc.ErrorMatches, `<path>\[1\]: expected int, got bool\(true\)`)
}

func subnet_2_0(source map[string]interface{}) (*subnet, error) {
	fields := schema.Fields{
		"resource_uri": schema.String(),
		"id":           schema.ForceInt(),
		"name":         schema.String(),
		"space":        schema.String(),
		"gateway_ip":   schema.OneOf(schema.Nil(""), schema.String()),
		"cidr":         schema.String(),
		"vlan":         schema.StringMap(schema.Any()),
		"dns_servers":  schema.OneOf(schema.Nil(""), schema.List(schema.String())),
	}
	checker := schema.FieldMap(fields, nil) // no defaults
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "subnet 2.0 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	// From here we know that the map returned from the schema coercion
	// contains fields of the right type.

	vlan, err := vlan_2_0(valid["vlan"].(map[string]interface{}))
	if err != nil {
		return nil, errors.Trace(err)
	}

	// Since the gateway_ip is optional, we use the two part cast assignment. If
	// the cast fails, then we get the default value we care about, which is the
	// empty string.
	gateway, _ := valid["gateway_ip"].(string)

	result := &subnet{
		resourceURI: valid["resource_uri"].(string),
		id:          valid["id"].(int),
		name:        valid["name"].(string),
		space:       valid["space"].(string),
		vlan:        vlan,
		gateway:     gateway,
		cidr:        valid["cidr"].(string),
		dnsServers:  convertToStringSlice(valid["dns_servers"]),
	}
	return result, nil
}

func readBootResources(controllerVersion version.Number, source interface{}) ([]*bootResource, error) {
	checker := schema.List(schema.StringMap(schema.Any()))
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, WrapWithDeserializationError(err, "boot resource base schema check failed")
	}
	valid := coerced.([]interface{})

	var deserialisationVersion version.Number
	for v := range bootResourceDeserializationFuncs {
		if v.Compare(deserialisationVersion) > 0 && v.Compare(controllerVersion) <= 0 {
			deserialisationVersion = v
		}
	}
	if deserialisationVersion == version.Zero {
		return nil, NewUnsupportedVersionError("no boot resource read func for version %s", controllerVersion)
	}
	readFunc := bootResourceDeserializationFuncs[deserialisationVersion]
	return readBootResourceList(valid, readFunc)
}

func readVLANs(controllerVersion version.Number, source interface{}) ([]*vlan, error) {
	checker := schema.List(schema.StringMap(schema.Any()))
	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "vlan base schema check failed")
	}
	valid := coerced.([]interface{})

	var deserialisationVersion version.Number
	for v := range vlanDeserializationFuncs {
		if v.Compare(deserialisationVersion) > 0 && v.Compare(controllerVersion) <= 0 {
			deserialisationVersion = v
		}
	}
	if deserialisationVersion == version.Zero {
		return nil, errors.Errorf("no vlan read func for version %s", controllerVersion)
	}
	readFunc := vlanDeserializationFuncs[deserialisationVersion]
	return readVLANList(valid, readFunc)
}

func importSSHHostKeyV1(source map[string]interface{}) (*sshHostKey, error) {
	fields := schema.Fields{
		"machine-id": schema.String(),
		"keys":       schema.List(schema.String()),
	}
	// Some values don't have to be there.
	defaults := schema.Defaults{}
	checker := schema.FieldMap(fields, defaults)

	coerced, err := checker.Coerce(source, nil)
	if err != nil {
		return nil, errors.Annotatef(err, "sshhostkey v1 schema check failed")
	}
	valid := coerced.(map[string]interface{})
	keysInterface := valid["keys"].([]interface{})
	keys := make([]string, len(keysInterface))
	for i, d := range keysInterface {
		keys[i] = d.(string)
	}
	return &sshHostKey{
		MachineID_: valid["machine-id"].(string),
		Keys_:      keys,
	}, nil
}