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Merge master into breakout_swarm
Signed-off-by: Alex Ellis <alexellis2@gmail.com>
This commit is contained in:
contrib
docker-compose.armhf.ymldocker-compose.ymlgateway
DockerfileGopkg.lockGopkg.toml
handlers
alerthandler.gocreate_handler.godeletehandler.goproxy.goqueueproxy.goreader.goservice_query.goupdate_handler.go
metrics
server.gotests
vendor.confvendor
github.com
Azure
go-ansiterm
Microsoft
go-winio
Nvveen
Sirupsen
logrus
beorn7
perks
docker
cli
LICENSENOTICEREADME.md
opts
env.gohosts.gohosts_unix.gohosts_windows.goip.gomount.goopts.goopts_unix.goopts_windows.goport.goquotedstring.goruntime.gosecret.gothrottledevice.goulimit.goweightdevice.go
vendor.confdistribution
.gitignore.mailmapAUTHORSBUILDING.mdCHANGELOG.mdCONTRIBUTING.mdDockerfilecoverpkg.sh
Godeps
MAINTAINERSMakefileREADME.mdRELEASE-CHECKLIST.mdROADMAP.mdblobs.gocircle.ymlcmd
digest
registry-api-descriptor-template
registry
configuration
context
contrib
apache
compose
docker-integration
DockerfileREADME.mddocker-compose.ymlgolem.confhelpers.bashinstall_certs.sh
malevolent-certs
malevolent.batsnginx
Dockerfiledocker-registry-v2.confnginx.confregistry-basic.confregistry-noauth.confregistry.conftest.passwd
run_multiversion.shtls.batstoken.batsv1
tokenserver-oauth
.htpasswdDockerfile
certs
auth.localregistry.certauth.localregistry.keylocalregistry.certlocalregistry.keysigning.certsigning.key
registry-config-notls.ymlregistry-config.ymltokenserver
token-server
digest
digest.godigest_test.godigester.godigester_resumable_test.godoc.goset.goset_test.goverifiers.goverifiers_test.go
docs
errors.gohealth
manifest
doc.go
manifests.gomanifestlist
schema1
config_builder.goconfig_builder_test.gomanifest.gomanifest_test.goreference_builder.goreference_builder_test.gosign.goverify.go
schema2
versioned.gonotifications
bridge.gobridge_test.goendpoint.goevent.goevent_test.gohttp.gohttp_test.golistener.golistener_test.gometrics.gosinks.gosinks_test.go
project
reference
registry.goregistry
api
auth
client
doc.gohandlers
api_test.goapp.goapp_test.gobasicauth.gobasicauth_prego14.goblob.goblobupload.gocatalog.gocontext.gohealth_test.gohelpers.gohmac.gohmac_test.gohooks.goimages.gomail.gotags.go
listener
middleware
proxy
proxyauth.goproxyblobstore.goproxyblobstore_test.goproxymanifeststore.goproxymanifeststore_test.goproxymetrics.goproxyregistry.goproxytagservice.goproxytagservice_test.go
registry.goregistry_test.goroot.goscheduler
storage
blob_test.goblobcachemetrics.goblobserver.goblobstore.goblobwriter.goblobwriter_nonresumable.goblobwriter_resumable.gofilereader.gofilereader_test.gogarbagecollect.gogarbagecollect_test.goio.golinkedblobstore.golinkedblobstore_test.gomanifestlisthandler.gomanifeststore.gomanifeststore_test.gopaths.gopaths_test.gopurgeuploads.gopurgeuploads_test.goregistry.goschema2manifesthandler.goschema2manifesthandler_test.gosignedmanifesthandler.gotagstore.gotagstore_test.goutil.govacuum.gowalk.gowalk_test.go
cache
catalog.gocatalog_test.godoc.godriver
azure
base
factory
fileinfo.gofilesystem
gcs
inmemory
middleware
oss
s3-aws
s3-goamz
storagedriver.goswift
testdriver
testsuites
testutil
uuid
vendor.confversion
docker
LICENSENOTICEREADME.md
api
README.mdcommon.gocommon_unix.gocommon_windows.gonames.go
types
auth.go
blkiodev
client.goconfigs.gocontainer
config.gocontainer_changes.gocontainer_create.gocontainer_top.gocontainer_update.gocontainer_wait.gohost_config.gohostconfig_unix.gohostconfig_windows.go
error_response.goevents
filters
graph_driver_data.goid_response.goimage
image_delete_response_item.goimage_summary.gomount
network
plugin.goplugin_device.goplugin_env.goplugin_interface_type.goplugin_mount.goplugin_responses.goport.goregistry
seccomp.goservice_update_response.gostats.gostrslice
swarm
time
types.goversions
volume.govolume
client
README.mdcheckpoint_create.gocheckpoint_delete.gocheckpoint_list.goclient.goclient_unix.goclient_windows.gocontainer_attach.gocontainer_commit.gocontainer_copy.gocontainer_create.gocontainer_diff.gocontainer_exec.gocontainer_export.gocontainer_inspect.gocontainer_kill.gocontainer_list.gocontainer_logs.gocontainer_pause.gocontainer_prune.gocontainer_remove.gocontainer_rename.gocontainer_resize.gocontainer_restart.gocontainer_start.gocontainer_stats.gocontainer_stop.gocontainer_top.gocontainer_unpause.gocontainer_update.gocontainer_wait.godisk_usage.goerrors.goevents.gohijack.goimage_build.goimage_create.goimage_history.goimage_import.goimage_inspect.goimage_list.goimage_load.goimage_prune.goimage_pull.goimage_push.goimage_remove.goimage_save.goimage_search.goimage_tag.goinfo.gointerface.gointerface_experimental.gointerface_stable.gologin.gonetwork_connect.gonetwork_create.gonetwork_disconnect.gonetwork_inspect.gonetwork_list.gonetwork_prune.gonetwork_remove.gonode_inspect.gonode_list.gonode_remove.gonode_update.goping.goplugin_create.goplugin_disable.goplugin_enable.goplugin_inspect.goplugin_install.goplugin_list.goplugin_push.goplugin_remove.goplugin_set.goplugin_upgrade.gorequest.gosecret_create.gosecret_inspect.gosecret_list.gosecret_remove.gosecret_update.goservice_create.goservice_inspect.goservice_list.goservice_logs.goservice_remove.goservice_update.goswarm_get_unlock_key.goswarm_init.goswarm_inspect.goswarm_join.goswarm_leave.goswarm_unlock.goswarm_update.gotask_inspect.gotask_list.gotask_logs.gotransport.goutils.goversion.govolume_create.govolume_inspect.govolume_list.govolume_prune.govolume_remove.go
opts
env.gohosts.gohosts_unix.gohosts_windows.goip.gomount.goopts.goopts_unix.goopts_windows.goport.goquotedstring.goruntime.gosecret.gothrottledevice.goulimit.goweightdevice.go
pkg
README.md
httputils
ioutils
buffer.gobytespipe.gofmt.gofswriters.gomultireader.goreaders.gotemp_unix.gotemp_windows.gowriteflusher.gowriters.go
jsonlog
jsonmessage
longpath
random
stringid
system
chtimes.gochtimes_unix.gochtimes_windows.goerrors.goevents_windows.goexitcode.gofilesys.gofilesys_windows.golstat_unix.golstat_windows.gomeminfo.gomeminfo_linux.gomeminfo_solaris.gomeminfo_unsupported.gomeminfo_windows.gomknod.gomknod_windows.gopath_unix.gopath_windows.goprocess_unix.gostat_darwin.gostat_freebsd.gostat_linux.gostat_openbsd.gostat_solaris.gostat_unix.gostat_windows.gosyscall_unix.gosyscall_windows.goumask.goumask_windows.goutimes_freebsd.goutimes_linux.goutimes_unsupported.goxattrs_linux.goxattrs_unsupported.go
tarsum
term
ascii.gotc_linux_cgo.gotc_other.gotc_solaris_cgo.goterm.goterm_solaris.goterm_unix.goterm_windows.gotermios_darwin.gotermios_freebsd.gotermios_linux.gotermios_openbsd.go
windows
tlsconfig
registry
auth.goconfig.goconfig_unix.goconfig_windows.goendpoint_v1.goregistry.goservice.goservice_v1.goservice_v2.gosession.gotypes.go
vendor.confgo-connections
go-units
libtrust
gogo
protobuf
.gitignore.mailmap.travis.ymlAUTHORSCONTRIBUTORSGOLANG_CONTRIBUTORSMakefileREADMEReadme.md
_conformance
bench.mdcodec
custom_types.mdextensions.mdgogoproto
gogoreplace
install-protobuf.shio
jsonpb
plugin
compare
defaultcheck
description
embedcheck
enumstringer
equal
face
gostring
marshalto
oneofcheck
populate
size
stringer
testgen
union
unmarshal
proto
Makefileall_test.goany_test.goclone_test.godecode_test.goencode.goencode_test.goequal_test.goextensions_test.golib.gomap_test.gomessage_set_test.goproperties.go
proto3_proto
proto3_test.gosize2_test.gosize_test.gotestdata
text.gotext_parser.gotext_parser_test.gotext_test.goprotobuf
protoc-gen-combo
protoc-gen-gofast
protoc-gen-gogo
protoc-gen-gogofast
protoc-gen-gogofaster
protoc-gen-gogoslick
protoc-gen-gogotypes
protoc-gen-gostring
protoc-min-version
sortkeys
test
.gitignoreMakefile
asymetric-issue125
bug_test.gocasttype
castvalue
combos
both
marshaler
unmarshaler
custom-dash-type
custom
custombytesnonstruct
dashfilename
data
defaultconflict
embedconflict
empty-issue70
enumcustomname
enumdecl
enumdecl_all
enumprefix
enumstringer
example
extension_test.gofiledotname
fuzztests
group
importdedup
indeximport-issue72
int64support
issue260
issue261
issue262
issue312
issue322
issue330
issue34
issue42order
issue8
jsonpb-gogo
mapdefaults
mapsproto2
Makefiledoc.goheader.protomapsproto2.protomapsproto2_test.go.in
combos
both
marshaler
neither
unmarshaler
mixbench
.gitignoremarshal.txtmarshaler.txtmixbench.gooldmarshaler.txtoldunmarshaler.txtunmarshal.txtunmarshaler.txtunsafe_marshaler.txtunsafe_unmarshaler.txt
moredefaults
nopackage
oneof
oneof3
oneofembed
packed
proto3extension
protosize
registration
required
sizerconflict
sizeunderscore
stdtypes
t.gotags
theproto3
Makefiledoc.gofooter.protoheader.protomaps.protoproto3_test.go.intheproto3.proto
thetest.pb.gothetest.protothetestpb_test.gocombos
both
marshaler
neither
unmarshaler
typedecl
typedecl_all
typedeclimport
types
unmarshalmerge
unrecognized
unrecognizedgroup
uuid.gouuid_test.gotypes
Makefileany.goany.pb.goany_test.godoc.goduration.goduration.pb.goduration_gogo.goduration_test.goempty.pb.gofield_mask.pb.gostruct.pb.gotimestamp.gotimestamp.pb.gotimestamp_gogo.gotimestamp_test.gowrappers.pb.go
vanity
version
golang
protobuf
.gitignore.travis.ymlAUTHORSCONTRIBUTORSMake.protobufMakefileREADME.md
_conformance
descriptor
jsonpb
proto
Makefileall_test.goany_test.goclone_test.godecode_test.goencode_test.goequal_test.goextensions_test.gomap_test.gomessage_set_test.go
proto3_proto
proto3_test.gosize2_test.gosize_test.gotestdata
text_parser_test.gotext_test.goprotoc-gen-go
ptypes
gorilla
context
mux
matttproud
golang_protobuf_extensions
nats-io
go-nats-streaming
go-nats
.gitignore.travis.ymlLICENSETODO.mdexample_test.go
bench
enc_test.goencoders
protobuf
examples
nats.gonats_test.goscripts
staticcheck.ignoretest
auth_test.gobasic_test.gobench_test.gocluster_test.go
timer_test.goconfigs
conn_test.gocontext_test.goenc_test.gogob_test.gohelper_test.gojson_test.gomain.gonetchan_test.goprotobuf_test.goreconnect_test.gosub_test.goutil
nuid
opencontainers
openfaas
nats-queue-worker
pkg
prometheus
client_golang
.gitignore.travis.ymlAUTHORS.mdCHANGELOG.mdCONTRIBUTING.mdREADME.mdVERSION
api
prometheus
examples
prometheus
.gitignorebenchmark_test.gocounter.gocounter_test.godesc.godoc.goexample_clustermanager_test.goexamples_test.goexpvar_collector_test.gogauge.gogauge_test.gogo_collector.gogo_collector_test.gohistogram.gohistogram_test.gohttp.gohttp_test.gometric_test.goobserver.goprocess_collector.goprocess_collector_test.go
promhttp
push
registry.goregistry_test.gosummary.gosummary_test.gotimer.gountyped.govalue.govec.govec_test.goclient_model
.gitignoreCONTRIBUTING.mdMAINTAINERS.mdMakefile
cpp
metrics.protopom.xmlpython
prometheus
ruby
setup.pysrc
main
java
io
prometheus
client
common
.travis.ymlCONTRIBUTING.mdMAINTAINERS.md
config
config.gohttp_config.gohttp_config_test.go
testdata
http.conf.bearer-token-and-file-set.bad.ymlhttp.conf.empty.bad.ymlhttp.conf.good.ymlhttp.conf.invalid-bearer-token-file.bad.ymltls_config.cert_no_key.bad.ymltls_config.empty.good.ymltls_config.insecure.good.ymltls_config.invalid_field.bad.ymltls_config.key_no_cert.bad.yml
tls_config_test.goexpfmt
bench_test.godecode_test.go
fuzz
corpus
from_test_parse_0from_test_parse_1from_test_parse_2from_test_parse_3from_test_parse_4from_test_parse_error_0from_test_parse_error_1from_test_parse_error_10from_test_parse_error_11from_test_parse_error_12from_test_parse_error_13from_test_parse_error_14from_test_parse_error_15from_test_parse_error_16from_test_parse_error_17from_test_parse_error_18from_test_parse_error_19from_test_parse_error_2from_test_parse_error_3from_test_parse_error_4from_test_parse_error_5from_test_parse_error_6from_test_parse_error_7from_test_parse_error_8from_test_parse_error_9minimal
testdata
text_create_test.gotext_parse_test.gointernal
bitbucket.org
ww
goautoneg
log
model
alert_test.golabels_test.gometric_test.gosignature_test.gosilence_test.gotime.gotime_test.govalue_test.go
promlog
route
version
procfs
.travis.ymlCONTRIBUTING.mdMAINTAINERS.mdMakefile
bcache
buddyinfo.gobuddyinfo_test.gofixtures
fs_test.goipvs.goipvs_test.gomdstat_test.gomountstats_test.gonet_dev.gonet_dev_test.goproc_io.goproc_io_test.goproc_limits.goproc_limits_test.goproc_ns.goproc_ns_test.goproc_stat_test.goproc_test.gostat_test.gosysfs
ttarxfrm_test.goxfs
spf13
golang.org
x
net
sys
LICENSEPATENTSREADME
unix
README.mdasm_darwin_386.sasm_darwin_amd64.sasm_darwin_arm.sasm_darwin_arm64.sasm_dragonfly_amd64.sasm_freebsd_386.sasm_freebsd_amd64.sasm_freebsd_arm.sasm_linux_386.sasm_linux_amd64.sasm_linux_arm.sasm_linux_arm64.sasm_linux_mips64x.sasm_linux_mipsx.sasm_linux_ppc64x.sasm_linux_s390x.sasm_netbsd_386.sasm_netbsd_amd64.sasm_netbsd_arm.sasm_openbsd_386.sasm_openbsd_amd64.sasm_solaris_amd64.sbluetooth_linux.goconstants.godirent.goendian_big.goendian_little.goenv_unix.goenv_unset.goflock.goflock_linux_32bit.gogccgo.gogccgo_c.cgccgo_linux_amd64.gogccgo_linux_sparc64.goopenbsd_pledge.gorace.gorace0.gosockcmsg_linux.gosockcmsg_unix.gostr.gosyscall.gosyscall_bsd.gosyscall_darwin.gosyscall_darwin_386.gosyscall_darwin_amd64.gosyscall_darwin_arm.gosyscall_darwin_arm64.gosyscall_dragonfly.gosyscall_dragonfly_amd64.gosyscall_freebsd.gosyscall_freebsd_386.gosyscall_freebsd_amd64.gosyscall_freebsd_arm.gosyscall_linux.gosyscall_linux_386.gosyscall_linux_amd64.gosyscall_linux_amd64_gc.gosyscall_linux_arm.gosyscall_linux_arm64.gosyscall_linux_mips64x.gosyscall_linux_mipsx.gosyscall_linux_ppc64x.gosyscall_linux_s390x.gosyscall_linux_sparc64.gosyscall_netbsd.gosyscall_netbsd_386.gosyscall_netbsd_amd64.gosyscall_netbsd_arm.gosyscall_no_getwd.gosyscall_openbsd.gosyscall_openbsd_386.gosyscall_openbsd_amd64.gosyscall_solaris.gosyscall_solaris_amd64.gosyscall_unix.gosyscall_unix_gc.gozerrors_darwin_386.gozerrors_darwin_amd64.gozerrors_darwin_arm.gozerrors_darwin_arm64.gozerrors_dragonfly_amd64.gozerrors_freebsd_386.gozerrors_freebsd_amd64.gozerrors_freebsd_arm.gozerrors_linux_386.gozerrors_linux_amd64.gozerrors_linux_arm.gozerrors_linux_arm64.gozerrors_linux_mips.gozerrors_linux_mips64.gozerrors_linux_mips64le.gozerrors_linux_mipsle.gozerrors_linux_ppc64.gozerrors_linux_ppc64le.gozerrors_linux_s390x.gozerrors_linux_sparc64.gozerrors_netbsd_386.gozerrors_netbsd_amd64.gozerrors_netbsd_arm.gozerrors_openbsd_386.gozerrors_openbsd_amd64.gozerrors_solaris_amd64.gozsyscall_darwin_386.gozsyscall_darwin_amd64.gozsyscall_darwin_arm.gozsyscall_darwin_arm64.gozsyscall_dragonfly_amd64.gozsyscall_freebsd_386.gozsyscall_freebsd_amd64.gozsyscall_freebsd_arm.gozsyscall_linux_386.gozsyscall_linux_amd64.gozsyscall_linux_arm.gozsyscall_linux_arm64.gozsyscall_linux_mips.gozsyscall_linux_mips64.gozsyscall_linux_mips64le.gozsyscall_linux_mipsle.gozsyscall_linux_ppc64.gozsyscall_linux_ppc64le.gozsyscall_linux_s390x.gozsyscall_linux_sparc64.gozsyscall_netbsd_386.gozsyscall_netbsd_amd64.gozsyscall_netbsd_arm.gozsyscall_openbsd_386.gozsyscall_openbsd_amd64.gozsyscall_solaris_amd64.gozsysctl_openbsd.gozsysnum_darwin_386.gozsysnum_darwin_amd64.gozsysnum_darwin_arm.gozsysnum_darwin_arm64.gozsysnum_dragonfly_amd64.gozsysnum_freebsd_386.gozsysnum_freebsd_amd64.gozsysnum_freebsd_arm.gozsysnum_linux_386.gozsysnum_linux_amd64.gozsysnum_linux_arm.gozsysnum_linux_arm64.gozsysnum_linux_mips.gozsysnum_linux_mips64.gozsysnum_linux_mips64le.gozsysnum_linux_mipsle.gozsysnum_linux_ppc64.gozsysnum_linux_ppc64le.gozsysnum_linux_s390x.gozsysnum_linux_sparc64.gozsysnum_netbsd_386.gozsysnum_netbsd_amd64.gozsysnum_netbsd_arm.gozsysnum_openbsd_386.gozsysnum_openbsd_amd64.gozsysnum_solaris_amd64.goztypes_darwin_386.goztypes_darwin_amd64.goztypes_darwin_arm.goztypes_darwin_arm64.goztypes_dragonfly_amd64.goztypes_freebsd_386.goztypes_freebsd_amd64.goztypes_freebsd_arm.goztypes_linux_386.goztypes_linux_amd64.goztypes_linux_arm.goztypes_linux_arm64.goztypes_linux_mips.goztypes_linux_mips64.goztypes_linux_mips64le.goztypes_linux_mipsle.goztypes_linux_ppc64.goztypes_linux_ppc64le.goztypes_linux_s390x.goztypes_linux_sparc64.goztypes_netbsd_386.goztypes_netbsd_amd64.goztypes_netbsd_arm.goztypes_openbsd_386.goztypes_openbsd_amd64.goztypes_solaris_amd64.go
windows
prometheus
283
gateway/vendor/github.com/docker/distribution/configuration/parser.go
generated
vendored
Normal file
283
gateway/vendor/github.com/docker/distribution/configuration/parser.go
generated
vendored
Normal file
@ -0,0 +1,283 @@
|
||||
package configuration
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/Sirupsen/logrus"
|
||||
"gopkg.in/yaml.v2"
|
||||
)
|
||||
|
||||
// Version is a major/minor version pair of the form Major.Minor
|
||||
// Major version upgrades indicate structure or type changes
|
||||
// Minor version upgrades should be strictly additive
|
||||
type Version string
|
||||
|
||||
// MajorMinorVersion constructs a Version from its Major and Minor components
|
||||
func MajorMinorVersion(major, minor uint) Version {
|
||||
return Version(fmt.Sprintf("%d.%d", major, minor))
|
||||
}
|
||||
|
||||
func (version Version) major() (uint, error) {
|
||||
majorPart := strings.Split(string(version), ".")[0]
|
||||
major, err := strconv.ParseUint(majorPart, 10, 0)
|
||||
return uint(major), err
|
||||
}
|
||||
|
||||
// Major returns the major version portion of a Version
|
||||
func (version Version) Major() uint {
|
||||
major, _ := version.major()
|
||||
return major
|
||||
}
|
||||
|
||||
func (version Version) minor() (uint, error) {
|
||||
minorPart := strings.Split(string(version), ".")[1]
|
||||
minor, err := strconv.ParseUint(minorPart, 10, 0)
|
||||
return uint(minor), err
|
||||
}
|
||||
|
||||
// Minor returns the minor version portion of a Version
|
||||
func (version Version) Minor() uint {
|
||||
minor, _ := version.minor()
|
||||
return minor
|
||||
}
|
||||
|
||||
// VersionedParseInfo defines how a specific version of a configuration should
|
||||
// be parsed into the current version
|
||||
type VersionedParseInfo struct {
|
||||
// Version is the version which this parsing information relates to
|
||||
Version Version
|
||||
// ParseAs defines the type which a configuration file of this version
|
||||
// should be parsed into
|
||||
ParseAs reflect.Type
|
||||
// ConversionFunc defines a method for converting the parsed configuration
|
||||
// (of type ParseAs) into the current configuration version
|
||||
// Note: this method signature is very unclear with the absence of generics
|
||||
ConversionFunc func(interface{}) (interface{}, error)
|
||||
}
|
||||
|
||||
type envVar struct {
|
||||
name string
|
||||
value string
|
||||
}
|
||||
|
||||
type envVars []envVar
|
||||
|
||||
func (a envVars) Len() int { return len(a) }
|
||||
func (a envVars) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
||||
func (a envVars) Less(i, j int) bool { return a[i].name < a[j].name }
|
||||
|
||||
// Parser can be used to parse a configuration file and environment of a defined
|
||||
// version into a unified output structure
|
||||
type Parser struct {
|
||||
prefix string
|
||||
mapping map[Version]VersionedParseInfo
|
||||
env envVars
|
||||
}
|
||||
|
||||
// NewParser returns a *Parser with the given environment prefix which handles
|
||||
// versioned configurations which match the given parseInfos
|
||||
func NewParser(prefix string, parseInfos []VersionedParseInfo) *Parser {
|
||||
p := Parser{prefix: prefix, mapping: make(map[Version]VersionedParseInfo)}
|
||||
|
||||
for _, parseInfo := range parseInfos {
|
||||
p.mapping[parseInfo.Version] = parseInfo
|
||||
}
|
||||
|
||||
for _, env := range os.Environ() {
|
||||
envParts := strings.SplitN(env, "=", 2)
|
||||
p.env = append(p.env, envVar{envParts[0], envParts[1]})
|
||||
}
|
||||
|
||||
// We must sort the environment variables lexically by name so that
|
||||
// more specific variables are applied before less specific ones
|
||||
// (i.e. REGISTRY_STORAGE before
|
||||
// REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY). This sucks, but it's a
|
||||
// lot simpler and easier to get right than unmarshalling map entries
|
||||
// into temporaries and merging with the existing entry.
|
||||
sort.Sort(p.env)
|
||||
|
||||
return &p
|
||||
}
|
||||
|
||||
// Parse reads in the given []byte and environment and writes the resulting
|
||||
// configuration into the input v
|
||||
//
|
||||
// Environment variables may be used to override configuration parameters other
|
||||
// than version, following the scheme below:
|
||||
// v.Abc may be replaced by the value of PREFIX_ABC,
|
||||
// v.Abc.Xyz may be replaced by the value of PREFIX_ABC_XYZ, and so forth
|
||||
func (p *Parser) Parse(in []byte, v interface{}) error {
|
||||
var versionedStruct struct {
|
||||
Version Version
|
||||
}
|
||||
|
||||
if err := yaml.Unmarshal(in, &versionedStruct); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
parseInfo, ok := p.mapping[versionedStruct.Version]
|
||||
if !ok {
|
||||
return fmt.Errorf("Unsupported version: %q", versionedStruct.Version)
|
||||
}
|
||||
|
||||
parseAs := reflect.New(parseInfo.ParseAs)
|
||||
err := yaml.Unmarshal(in, parseAs.Interface())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, envVar := range p.env {
|
||||
pathStr := envVar.name
|
||||
if strings.HasPrefix(pathStr, strings.ToUpper(p.prefix)+"_") {
|
||||
path := strings.Split(pathStr, "_")
|
||||
|
||||
err = p.overwriteFields(parseAs, pathStr, path[1:], envVar.value)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
c, err := parseInfo.ConversionFunc(parseAs.Interface())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
reflect.ValueOf(v).Elem().Set(reflect.Indirect(reflect.ValueOf(c)))
|
||||
return nil
|
||||
}
|
||||
|
||||
// overwriteFields replaces configuration values with alternate values specified
|
||||
// through the environment. Precondition: an empty path slice must never be
|
||||
// passed in.
|
||||
func (p *Parser) overwriteFields(v reflect.Value, fullpath string, path []string, payload string) error {
|
||||
for v.Kind() == reflect.Ptr {
|
||||
if v.IsNil() {
|
||||
panic("encountered nil pointer while handling environment variable " + fullpath)
|
||||
}
|
||||
v = reflect.Indirect(v)
|
||||
}
|
||||
switch v.Kind() {
|
||||
case reflect.Struct:
|
||||
return p.overwriteStruct(v, fullpath, path, payload)
|
||||
case reflect.Map:
|
||||
return p.overwriteMap(v, fullpath, path, payload)
|
||||
case reflect.Interface:
|
||||
if v.NumMethod() == 0 {
|
||||
if !v.IsNil() {
|
||||
return p.overwriteFields(v.Elem(), fullpath, path, payload)
|
||||
}
|
||||
// Interface was empty; create an implicit map
|
||||
var template map[string]interface{}
|
||||
wrappedV := reflect.MakeMap(reflect.TypeOf(template))
|
||||
v.Set(wrappedV)
|
||||
return p.overwriteMap(wrappedV, fullpath, path, payload)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Parser) overwriteStruct(v reflect.Value, fullpath string, path []string, payload string) error {
|
||||
// Generate case-insensitive map of struct fields
|
||||
byUpperCase := make(map[string]int)
|
||||
for i := 0; i < v.NumField(); i++ {
|
||||
sf := v.Type().Field(i)
|
||||
upper := strings.ToUpper(sf.Name)
|
||||
if _, present := byUpperCase[upper]; present {
|
||||
panic(fmt.Sprintf("field name collision in configuration object: %s", sf.Name))
|
||||
}
|
||||
byUpperCase[upper] = i
|
||||
}
|
||||
|
||||
fieldIndex, present := byUpperCase[path[0]]
|
||||
if !present {
|
||||
logrus.Warnf("Ignoring unrecognized environment variable %s", fullpath)
|
||||
return nil
|
||||
}
|
||||
field := v.Field(fieldIndex)
|
||||
sf := v.Type().Field(fieldIndex)
|
||||
|
||||
if len(path) == 1 {
|
||||
// Env var specifies this field directly
|
||||
fieldVal := reflect.New(sf.Type)
|
||||
err := yaml.Unmarshal([]byte(payload), fieldVal.Interface())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
field.Set(reflect.Indirect(fieldVal))
|
||||
return nil
|
||||
}
|
||||
|
||||
// If the field is nil, must create an object
|
||||
switch sf.Type.Kind() {
|
||||
case reflect.Map:
|
||||
if field.IsNil() {
|
||||
field.Set(reflect.MakeMap(sf.Type))
|
||||
}
|
||||
case reflect.Ptr:
|
||||
if field.IsNil() {
|
||||
field.Set(reflect.New(sf.Type))
|
||||
}
|
||||
}
|
||||
|
||||
err := p.overwriteFields(field, fullpath, path[1:], payload)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Parser) overwriteMap(m reflect.Value, fullpath string, path []string, payload string) error {
|
||||
if m.Type().Key().Kind() != reflect.String {
|
||||
// non-string keys unsupported
|
||||
logrus.Warnf("Ignoring environment variable %s involving map with non-string keys", fullpath)
|
||||
return nil
|
||||
}
|
||||
|
||||
if len(path) > 1 {
|
||||
// If a matching key exists, get its value and continue the
|
||||
// overwriting process.
|
||||
for _, k := range m.MapKeys() {
|
||||
if strings.ToUpper(k.String()) == path[0] {
|
||||
mapValue := m.MapIndex(k)
|
||||
// If the existing value is nil, we want to
|
||||
// recreate it instead of using this value.
|
||||
if (mapValue.Kind() == reflect.Ptr ||
|
||||
mapValue.Kind() == reflect.Interface ||
|
||||
mapValue.Kind() == reflect.Map) &&
|
||||
mapValue.IsNil() {
|
||||
break
|
||||
}
|
||||
return p.overwriteFields(mapValue, fullpath, path[1:], payload)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// (Re)create this key
|
||||
var mapValue reflect.Value
|
||||
if m.Type().Elem().Kind() == reflect.Map {
|
||||
mapValue = reflect.MakeMap(m.Type().Elem())
|
||||
} else {
|
||||
mapValue = reflect.New(m.Type().Elem())
|
||||
}
|
||||
if len(path) > 1 {
|
||||
err := p.overwriteFields(mapValue, fullpath, path[1:], payload)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
err := yaml.Unmarshal([]byte(payload), mapValue.Interface())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
m.SetMapIndex(reflect.ValueOf(strings.ToLower(path[0])), reflect.Indirect(mapValue))
|
||||
|
||||
return nil
|
||||
}
|
Reference in New Issue
Block a user