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Add option to cosume connect events rather than polling to restart deployments

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jillianwilson
2021-10-06 14:50:47 -03:00
parent b35c668959
commit a5f4a7a0c1
733 changed files with 86908 additions and 24010 deletions
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8
vendor/github.com/sethvargo/go-envconfig/AUTHORS generated vendored Normal file
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# This is the list of envconfig authors for copyright purposes.
#
# This does not necessarily list everyone who has contributed code, since in
# some cases, their employer may be the copyright holder. To see the full list
# of contributors, see the revision history in source control.
Google LLC
Seth Vargo

202
vendor/github.com/sethvargo/go-envconfig/LICENSE generated vendored Normal file
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vendor/github.com/sethvargo/go-envconfig/Makefile generated vendored Normal file
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# Copyright The envconfig Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
VETTERS = "asmdecl,assign,atomic,bools,buildtag,cgocall,composites,copylocks,errorsas,httpresponse,loopclosure,lostcancel,nilfunc,printf,shift,stdmethods,structtag,tests,unmarshal,unreachable,unsafeptr,unusedresult"
GOFMT_FILES = $(shell go list -f '{{.Dir}}' ./...)
fmtcheck:
@command -v goimports > /dev/null 2>&1 || (cd tools && go get golang.org/x/tools/cmd/goimports && cd ..)
@CHANGES="$$(goimports -d $(GOFMT_FILES))"; \
if [ -n "$${CHANGES}" ]; then \
echo "Unformatted (run goimports -w .):\n\n$${CHANGES}\n\n"; \
exit 1; \
fi
@# Annoyingly, goimports does not support the simplify flag.
@CHANGES="$$(gofmt -s -d $(GOFMT_FILES))"; \
if [ -n "$${CHANGES}" ]; then \
echo "Unformatted (run gofmt -s -w .):\n\n$${CHANGES}\n\n"; \
exit 1; \
fi
.PHONY: fmtcheck
spellcheck:
@command -v misspell > /dev/null 2>&1 || (cd tools && go get github.com/client9/misspell/cmd/misspell && cd ..)
@misspell -locale="US" -error -source="text" **/*
.PHONY: spellcheck
staticcheck:
@command -v staticcheck > /dev/null 2>&1 || (cd tools && go get honnef.co/go/tools/cmd/staticcheck && cd ..)
@staticcheck -checks="all" -tests $(GOFMT_FILES)
.PHONY: staticcheck
test:
@go test \
-count=1 \
-short \
-timeout=5m \
-vet="${VETTERS}" \
./...
.PHONY: test
test-acc:
@go test \
-count=1 \
-race \
-timeout=10m \
-vet="${VETTERS}" \
./...
.PHONY: test-acc

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# Envconfig
[![GoDoc](https://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](https://pkg.go.dev/mod/github.com/sethvargo/go-envconfig)
[![GitHub Actions](https://img.shields.io/github/workflow/status/sethvargo/go-envconfig/Test?style=flat-square)](https://github.com/sethvargo/go-envconfig/actions?query=workflow%3ATest)
Envconfig populates struct field values based on environment variables or
arbitrary lookup functions. It supports pre-setting mutations, which is useful
for things like converting values to uppercase, trimming whitespace, or looking
up secrets.
**Note:** Versions prior to v0.2 used a different import path. This README and
examples are for v0.2+.
## Usage
Define a struct with fields using the `env` tag:
```go
type MyConfig struct {
Port int `env:"PORT"`
Username string `env:"USERNAME"`
}
```
Set some environment variables:
```sh
export PORT=5555
export USERNAME=yoyo
```
Process it using envconfig:
```go
package main
import (
"context"
"log"
"github.com/sethvargo/go-envconfig"
)
func main() {
ctx := context.Background()
var c MyConfig
if err := envconfig.Process(ctx, &c); err != nil {
log.Fatal(err)
}
// c.Port = 5555
// c.Username = "yoyo"
}
```
You can also use nested structs, just remember that any fields you want to
process must be public:
```go
type MyConfig struct {
Database *DatabaseConfig
}
type DatabaseConfig struct {
Port int `env:"PORT"`
Username string `env:"USERNAME"`
}
```
## Configuration
Use the `env` struct tag to define configuration.
### Required
If a field is required, processing will error if the environment variable is
unset.
```go
type MyStruct struct {
Port int `env:"PORT,required"`
}
```
It is invalid to have a field as both `required` and `default`.
### Default
If an environment variable is not set, the field will be set to the default
value. Note that the environment variable must not be set (e.g. `unset PORT`).
If the environment variable is the empty string, that counts as a "value" and
the default will not be used.
```go
type MyStruct struct {
Port int `env:"PORT,default=5555"`
}
```
You can also set the default value to another field or value from the
environment, for example:
```go
type MyStruct struct {
DefaultPort int `env:"DEFAULT_PORT,default=5555"`
Port int `env:"OVERRIDE_PORT,default=$DEFAULT_PORT"`
}
```
The value for `Port` will default to the value of `DEFAULT_PORT`.
It is invalid to have a field as both `required` and `default`.
### Prefix
For shared, embedded structs, you can define a prefix to use when processing
struct values for that embed.
```go
type SharedConfig struct {
Port int `env:"PORT,default=5555"`
}
type Server1 struct {
// This processes Port from $FOO_PORT.
*SharedConfig `env:",prefix=FOO_"`
}
type Server2 struct {
// This processes Port from $BAR_PORT.
*SharedConfig `env:",prefix=BAR_"`
}
```
It is invalid to specify a prefix on non-struct fields.
## Complex Types
### Durations
In the environment, `time.Duration` values are specified as a parsable Go
duration:
```go
type MyStruct struct {
MyVar time.Duration `env:"MYVAR"`
}
```
```bash
export MYVAR="10m" # 10 * time.Minute
```
### TextUnmarshaler / BinaryUnmarshaler
Types that implement `TextUnmarshaler` or `BinaryUnmarshaler` are processed as such.
### json.Unmarshaler
Types that implement `json.Unmarshaler` are processed as such.
### gob.Decoder
Types that implement `gob.Decoder` are processed as such.
### Slices
Slices are specified as comma-separated values:
```go
type MyStruct struct {
MyVar []string `env:"MYVAR"`
}
```
```bash
export MYVAR="a,b,c,d" # []string{"a", "b", "c", "d"}
```
Note that byte slices are special cased and interpreted as strings from the
environment.
### Maps
Maps are specified as comma-separated key:value pairs:
```go
type MyStruct struct {
MyVar map[string]string `env:"MYVAR"`
}
```
```bash
export MYVAR="a:b,c:d" # map[string]string{"a":"b", "c":"d"}
```
### Structs
Envconfig walks the entire struct, so deeply-nested fields are also supported. You can also define your own decoder (see below).
## Prefixing
You can define a custom prefix using the `PrefixLookuper`. This will lookup
values in the environment by prefixing the keys with the provided value:
```go
type MyStruct struct {
MyVar string `env:"MYVAR"`
}
```
```go
// Process variables, but look for the "APP_" prefix.
l := envconfig.PrefixLookuper("APP_", envconfig.OsLookuper())
if err := envconfig.ProcessWith(ctx, &c, l); err != nil {
panic(err)
}
```
```bash
export APP_MYVAR="foo"
```
## Extension
All built-in types are supported except Func and Chan. If you need to define a
custom decoder, implement `Decoder`:
```go
type MyStruct struct {
field string
}
func (v *MyStruct) EnvDecode(val string) error {
v.field = fmt.Sprintf("PREFIX-%s", val)
return nil
}
```
If you need to modify environment variable values before processing, you can
specify a custom `Mutator`:
```go
type Config struct {
Password `env:"PASSWORD"`
}
func resolveSecretFunc(ctx context.Context, key, value string) (string, error) {
if strings.HasPrefix(key, "secret://") {
return secretmanager.Resolve(ctx, value) // example
}
return value, nil
}
var config Config
envconfig.ProcessWith(ctx, &config, envconfig.OsLookuper(), resolveSecretFunc)
```
## Testing
Relying on the environment in tests can be troublesome because environment
variables are global, which makes it difficult to parallelize the tests.
Envconfig supports extracting data from anything that returns a value:
```go
lookuper := envconfig.MapLookuper(map[string]string{
"FOO": "bar",
"ZIP": "zap",
})
var config Config
envconfig.ProcessWith(ctx, &config, lookuper)
```
Now you can parallelize all your tests by providing a map for the lookup
function. In fact, that's how the tests in this repo work, so check there for an
example.
You can also combine multiple lookupers with `MultiLookuper`. See the GoDoc for
more information and examples.
## Inspiration
This library is conceptually similar to [kelseyhightower/envconfig](https://github.com/kelseyhightower/envconfig), with the following
major behavioral differences:
- Adds support for specifying a custom lookup function (such as a map), which
is useful for testing.
- Only populates fields if they contain zero or nil values. This means you can
pre-initialize a struct and any pre-populated fields will not be overwritten
during processing.
- Support for interpolation. The default value for a field can be the value of
another field.
- Support for arbitrary mutators that change/resolve data before type
conversion.

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// Copyright The envconfig Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package envconfig
import (
"encoding/base64"
"encoding/hex"
"strings"
)
// Base64Bytes is a slice of bytes where the information is base64-encoded in
// the environment variable.
type Base64Bytes []byte
// EnvDecode implements env.Decoder.
func (b *Base64Bytes) EnvDecode(val string) error {
val = strings.ReplaceAll(val, "+", "-")
val = strings.ReplaceAll(val, "/", "_")
val = strings.TrimRight(val, "=")
var err error
*b, err = base64.RawURLEncoding.DecodeString(val)
return err
}
// Bytes returns the underlying bytes.
func (b Base64Bytes) Bytes() []byte {
return []byte(b)
}
// HexBytes is a slice of bytes where the information is hex-encoded in the
// environment variable.
type HexBytes []byte
// EnvDecode implements env.Decoder.
func (b *HexBytes) EnvDecode(val string) error {
var err error
*b, err = hex.DecodeString(val)
return err
}
// Bytes returns the underlying bytes.
func (b HexBytes) Bytes() []byte {
return []byte(b)
}

592
vendor/github.com/sethvargo/go-envconfig/envconfig.go generated vendored Normal file
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// Copyright The envconfig Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package envconfig populates struct fields based on environment variable
// values (or anything that responds to "Lookup"). Structs declare their
// environment dependencies using the `env` tag with the key being the name of
// the environment variable, case sensitive.
//
// type MyStruct struct {
// A string `env:"A"` // resolves A to $A
// B string `env:"B,required"` // resolves B to $B, errors if $B is unset
// C string `env:"C,default=foo"` // resolves C to $C, defaults to "foo"
//
// D string `env:"D,required,default=foo"` // error, cannot be required and default
// E string `env:""` // error, must specify key
// }
//
// All built-in types are supported except Func and Chan. If you need to define
// a custom decoder, implement Decoder:
//
// type MyStruct struct {
// field string
// }
//
// func (v *MyStruct) EnvDecode(val string) error {
// v.field = fmt.Sprintf("PREFIX-%s", val)
// return nil
// }
//
// In the environment, slices are specified as comma-separated values:
//
// export MYVAR="a,b,c,d" // []string{"a", "b", "c", "d"}
//
// In the environment, maps are specified as comma-separated key:value pairs:
//
// export MYVAR="a:b,c:d" // map[string]string{"a":"b", "c":"d"}
//
// If you need to modify environment variable values before processing, you can
// specify a custom mutator:
//
// type Config struct {
// Password `env:"PASSWORD_SECRET"`
// }
//
// func resolveSecretFunc(ctx context.Context, key, value string) (string, error) {
// if strings.HasPrefix(key, "secret://") {
// return secretmanager.Resolve(ctx, value) // example
// }
// return value, nil
// }
//
// var config Config
// ProcessWith(&config, OsLookuper(), resolveSecretFunc)
//
package envconfig
import (
"context"
"encoding"
"encoding/gob"
"encoding/json"
"errors"
"fmt"
"os"
"reflect"
"strconv"
"strings"
"time"
)
const (
envTag = "env"
optRequired = "required"
optDefault = "default="
optPrefix = "prefix="
)
// Error is a custom error type for errors returned by envconfig.
type Error string
// Error implements error.
func (e Error) Error() string {
return string(e)
}
const (
ErrInvalidMapItem = Error("invalid map item")
ErrLookuperNil = Error("lookuper cannot be nil")
ErrMissingKey = Error("missing key")
ErrMissingRequired = Error("missing required value")
ErrNotPtr = Error("input must be a pointer")
ErrNotStruct = Error("input must be a struct")
ErrPrefixNotStruct = Error("prefix is only valid on struct types")
ErrPrivateField = Error("cannot parse private fields")
ErrRequiredAndDefault = Error("field cannot be required and have a default value")
ErrUnknownOption = Error("unknown option")
)
// Lookuper is an interface that provides a lookup for a string-based key.
type Lookuper interface {
// Lookup searches for the given key and returns the corresponding string
// value. If a value is found, it returns the value and true. If a value is
// not found, it returns the empty string and false.
Lookup(key string) (string, bool)
}
// osLookuper looks up environment configuration from the local environment.
type osLookuper struct{}
// Verify implements interface.
var _ Lookuper = (*osLookuper)(nil)
func (o *osLookuper) Lookup(key string) (string, bool) {
return os.LookupEnv(key)
}
// OsLookuper returns a lookuper that uses the environment (os.LookupEnv) to
// resolve values.
func OsLookuper() Lookuper {
return new(osLookuper)
}
type mapLookuper map[string]string
var _ Lookuper = (*mapLookuper)(nil)
func (m mapLookuper) Lookup(key string) (string, bool) {
v, ok := m[key]
return v, ok
}
// MapLookuper looks up environment configuration from a provided map. This is
// useful for testing, especially in parallel, since it does not require you to
// mutate the parent environment (which is stateful).
func MapLookuper(m map[string]string) Lookuper {
return mapLookuper(m)
}
type multiLookuper struct {
ls []Lookuper
}
var _ Lookuper = (*multiLookuper)(nil)
func (m *multiLookuper) Lookup(key string) (string, bool) {
for _, l := range m.ls {
if v, ok := l.Lookup(key); ok {
return v, true
}
}
return "", false
}
// PrefixLookuper looks up environment configuration using the specified prefix.
// This is useful if you want all your variables to start with a particular
// prefix like "MY_APP_".
func PrefixLookuper(prefix string, l Lookuper) Lookuper {
if typ, ok := l.(*prefixLookuper); ok {
return &prefixLookuper{prefix: typ.prefix + prefix, l: typ.l}
}
return &prefixLookuper{prefix: prefix, l: l}
}
type prefixLookuper struct {
prefix string
l Lookuper
}
func (p *prefixLookuper) Lookup(key string) (string, bool) {
return p.l.Lookup(p.prefix + key)
}
// MultiLookuper wraps a collection of lookupers. It does not combine them, and
// lookups appear in the order in which they are provided to the initializer.
func MultiLookuper(lookupers ...Lookuper) Lookuper {
return &multiLookuper{ls: lookupers}
}
// Decoder is an interface that custom types/fields can implement to control how
// decoding takes place. For example:
//
// type MyType string
//
// func (mt MyType) EnvDecode(val string) error {
// return "CUSTOM-"+val
// }
//
type Decoder interface {
EnvDecode(val string) error
}
// MutatorFunc is a function that mutates a given value before it is passed
// along for processing. This is useful if you want to mutate the environment
// variable value before it's converted to the proper type.
type MutatorFunc func(ctx context.Context, k, v string) (string, error)
// options are internal options for decoding.
type options struct {
Default string
Required bool
Prefix string
}
// Process processes the struct using the environment. See ProcessWith for a
// more customizable version.
func Process(ctx context.Context, i interface{}) error {
return ProcessWith(ctx, i, OsLookuper())
}
// ProcessWith processes the given interface with the given lookuper. See the
// package-level documentation for specific examples and behaviors.
func ProcessWith(ctx context.Context, i interface{}, l Lookuper, fns ...MutatorFunc) error {
if l == nil {
return ErrLookuperNil
}
v := reflect.ValueOf(i)
if v.Kind() != reflect.Ptr {
return ErrNotPtr
}
e := v.Elem()
if e.Kind() != reflect.Struct {
return ErrNotStruct
}
t := e.Type()
for i := 0; i < t.NumField(); i++ {
ef := e.Field(i)
tf := t.Field(i)
tag := tf.Tag.Get(envTag)
if !ef.CanSet() {
if tag != "" {
// There's an "env" tag on a private field, we can't alter it, and it's
// likely a mistake. Return an error so the user can handle.
return fmt.Errorf("%s: %w", tf.Name, ErrPrivateField)
}
// Otherwise continue to the next field.
continue
}
// Parse the key and options.
key, opts, err := keyAndOpts(tag)
if err != nil {
return fmt.Errorf("%s: %w", tf.Name, err)
}
// Initialize pointer structs.
for ef.Kind() == reflect.Ptr {
if ef.IsNil() {
if ef.Type().Elem().Kind() != reflect.Struct {
// This is a nil pointer to something that isn't a struct, like
// *string. Move along.
break
}
// Nil pointer to a struct, create so we can traverse.
ef.Set(reflect.New(ef.Type().Elem()))
}
ef = ef.Elem()
}
// Special case handle structs. This has to come after the value resolution in
// case the struct has a custom decoder.
if ef.Kind() == reflect.Struct {
for ef.CanAddr() {
ef = ef.Addr()
}
// Lookup the value, ignoring an error if the key isn't defined. This is
// required for nested structs that don't declare their own `env` keys,
// but have internal fields with an `env` defined.
val, err := lookup(key, opts, l)
if err != nil && !errors.Is(err, ErrMissingKey) {
return fmt.Errorf("%s: %w", tf.Name, err)
}
if ok, err := processAsDecoder(val, ef); ok {
if err != nil {
return err
}
continue
}
plu := l
if opts.Prefix != "" {
plu = PrefixLookuper(opts.Prefix, l)
}
if err := ProcessWith(ctx, ef.Interface(), plu, fns...); err != nil {
return fmt.Errorf("%s: %w", tf.Name, err)
}
continue
}
// It's invalid to have a prefix on a non-struct field.
if opts.Prefix != "" {
return ErrPrefixNotStruct
}
// Stop processing if there's no env tag (this comes after nested parsing),
// in case there's an env tag in an embedded struct.
if tag == "" {
continue
}
// The field already has a non-zero value, do not overwrite.
if !ef.IsZero() {
continue
}
val, err := lookup(key, opts, l)
if err != nil {
return fmt.Errorf("%s: %w", tf.Name, err)
}
// Apply any mutators. Mutators are applied after the lookup, but before any
// type conversions. They always resolve to a string (or error)
for _, fn := range fns {
if fn != nil {
val, err = fn(ctx, key, val)
if err != nil {
return fmt.Errorf("%s: %w", tf.Name, err)
}
}
}
// Set value.
if err := processField(val, ef); err != nil {
return fmt.Errorf("%s(%q): %w", tf.Name, val, err)
}
}
return nil
}
// keyAndOpts parses the given tag value (e.g. env:"foo,required") and
// returns the key name and options as a list.
func keyAndOpts(tag string) (string, *options, error) {
parts := strings.Split(tag, ",")
key, tagOpts := strings.TrimSpace(parts[0]), parts[1:]
var opts options
LOOP:
for i, o := range tagOpts {
o = strings.TrimSpace(o)
switch {
case o == optRequired:
opts.Required = true
case strings.HasPrefix(o, optPrefix):
opts.Prefix = strings.TrimPrefix(o, optPrefix)
case strings.HasPrefix(o, optDefault):
// If a default value was given, assume everything after is the provided
// value, including comma-seprated items.
o = strings.TrimLeft(strings.Join(tagOpts[i:], ","), " ")
opts.Default = strings.TrimPrefix(o, optDefault)
break LOOP
default:
return "", nil, fmt.Errorf("%q: %w", o, ErrUnknownOption)
}
}
return key, &opts, nil
}
// lookup looks up the given key using the provided Lookuper and options.
func lookup(key string, opts *options, l Lookuper) (string, error) {
if key == "" {
// The struct has something like `env:",required"`, which is likely a
// mistake. We could try to infer the envvar from the field name, but that
// feels too magical.
return "", ErrMissingKey
}
if opts.Required && opts.Default != "" {
// Having a default value on a required value doesn't make sense.
return "", ErrRequiredAndDefault
}
// Lookup value.
val, ok := l.Lookup(key)
if !ok {
if opts.Required {
return "", fmt.Errorf("%w: %s", ErrMissingRequired, key)
}
if opts.Default != "" {
// Expand the default value. This allows for a default value that maps to
// a different variable.
val = os.Expand(opts.Default, func(i string) string {
s, ok := l.Lookup(i)
if ok {
return s
}
return ""
})
}
}
return val, nil
}
// processAsDecoder processes the given value as a decoder or custom
// unmarshaller.
func processAsDecoder(v string, ef reflect.Value) (bool, error) {
// Keep a running error. It's possible that a property might implement
// multiple decoders, and we don't know *which* decoder will succeed. If we
// get through all of them, we'll return the most recent error.
var imp bool
var err error
// Resolve any pointers.
for ef.CanAddr() {
ef = ef.Addr()
}
if ef.CanInterface() {
iface := ef.Interface()
if dec, ok := iface.(Decoder); ok {
imp = true
if err = dec.EnvDecode(v); err == nil {
return true, nil
}
}
if tu, ok := iface.(encoding.BinaryUnmarshaler); ok {
imp = true
if err = tu.UnmarshalBinary([]byte(v)); err == nil {
return true, nil
}
}
if tu, ok := iface.(gob.GobDecoder); ok {
imp = true
if err = tu.GobDecode([]byte(v)); err == nil {
return true, nil
}
}
if tu, ok := iface.(json.Unmarshaler); ok {
imp = true
if err = tu.UnmarshalJSON([]byte(v)); err == nil {
return true, nil
}
}
if tu, ok := iface.(encoding.TextUnmarshaler); ok {
imp = true
if err = tu.UnmarshalText([]byte(v)); err == nil {
return true, nil
}
}
}
return imp, err
}
func processField(v string, ef reflect.Value) error {
// Handle pointers and uninitialized pointers.
for ef.Type().Kind() == reflect.Ptr {
if ef.IsNil() {
ef.Set(reflect.New(ef.Type().Elem()))
}
ef = ef.Elem()
}
tf := ef.Type()
tk := tf.Kind()
// Handle existing decoders.
if ok, err := processAsDecoder(v, ef); ok {
return err
}
// We don't check if the value is empty earlier, because the user might want
// to define a custom decoder and treat the empty variable as a special case.
// However, if we got this far, none of the remaining parsers will succeed, so
// bail out now.
if v == "" {
return nil
}
switch tk {
case reflect.Bool:
b, err := strconv.ParseBool(v)
if err != nil {
return err
}
ef.SetBool(b)
case reflect.Float32, reflect.Float64:
f, err := strconv.ParseFloat(v, tf.Bits())
if err != nil {
return err
}
ef.SetFloat(f)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32:
i, err := strconv.ParseInt(v, 0, tf.Bits())
if err != nil {
return err
}
ef.SetInt(i)
case reflect.Int64:
// Special case time.Duration values.
if tf.PkgPath() == "time" && tf.Name() == "Duration" {
d, err := time.ParseDuration(v)
if err != nil {
return err
}
ef.SetInt(int64(d))
} else {
i, err := strconv.ParseInt(v, 0, tf.Bits())
if err != nil {
return err
}
ef.SetInt(i)
}
case reflect.String:
ef.SetString(v)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
i, err := strconv.ParseUint(v, 0, tf.Bits())
if err != nil {
return err
}
ef.SetUint(i)
case reflect.Interface:
return fmt.Errorf("cannot decode into interfaces")
// Maps
case reflect.Map:
vals := strings.Split(v, ",")
mp := reflect.MakeMapWithSize(tf, len(vals))
for _, val := range vals {
pair := strings.SplitN(val, ":", 2)
if len(pair) < 2 {
return fmt.Errorf("%s: %w", val, ErrInvalidMapItem)
}
mKey, mVal := strings.TrimSpace(pair[0]), strings.TrimSpace(pair[1])
k := reflect.New(tf.Key()).Elem()
if err := processField(mKey, k); err != nil {
return fmt.Errorf("%s: %w", mKey, err)
}
v := reflect.New(tf.Elem()).Elem()
if err := processField(mVal, v); err != nil {
return fmt.Errorf("%s: %w", mVal, err)
}
mp.SetMapIndex(k, v)
}
ef.Set(mp)
// Slices
case reflect.Slice:
// Special case: []byte
if tf.Elem().Kind() == reflect.Uint8 {
ef.Set(reflect.ValueOf([]byte(v)))
} else {
vals := strings.Split(v, ",")
s := reflect.MakeSlice(tf, len(vals), len(vals))
for i, val := range vals {
val = strings.TrimSpace(val)
if err := processField(val, s.Index(i)); err != nil {
return fmt.Errorf("%s: %w", val, err)
}
}
ef.Set(s)
}
}
return nil
}

5
vendor/github.com/sethvargo/go-envconfig/go.mod generated vendored Normal file
View File

@@ -0,0 +1,5 @@
module github.com/sethvargo/go-envconfig
go 1.14
require github.com/google/go-cmp v0.4.1

4
vendor/github.com/sethvargo/go-envconfig/go.sum generated vendored Normal file
View File

@@ -0,0 +1,4 @@
github.com/google/go-cmp v0.4.1 h1:/exdXoGamhu5ONeUJH0deniYLWYvQwW66yvlfiiKTu0=
github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=