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support secrets for set request/response headers and k8s access token (
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wasaga authored May 5, 2022
1 parent df4b151 commit 9d6da36
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Showing 6 changed files with 167 additions and 63 deletions.
10 changes: 3 additions & 7 deletions controllers/fetch.go
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package controllers
import (
"context"
"fmt"
"strings"

corev1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
Expand Down Expand Up @@ -153,13 +154,8 @@ func (r *ingressController) allIngressSecrets(ingress *networkingv1.Ingress) ([]
}
names = append(names, types.NamespacedName{Name: tls.SecretName, Namespace: ingress.Namespace})
}
for _, k := range []string{
model.TLSClientSecret,
model.TLSCustomCASecret,
model.TLSDownstreamClientCASecret,
} {
key := fmt.Sprintf("%s/%s", r.annotationPrefix, k)
if secret := ingress.Annotations[key]; secret != "" {
for key, secret := range ingress.Annotations {
if strings.HasPrefix(key, r.annotationPrefix) && strings.HasSuffix(key, "_secret") {
names = append(names, types.NamespacedName{Name: secret, Namespace: ingress.Namespace})
}
}
Expand Down
2 changes: 0 additions & 2 deletions go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,6 @@ require (
github.com/benbjohnson/clock v1.1.0 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/bkielbasa/cyclop v1.2.0 // indirect
github.com/blang/semver v3.5.1+incompatible // indirect
github.com/blang/semver/v4 v4.0.0 // indirect
github.com/blizzy78/varnamelen v0.6.1 // indirect
github.com/bombsimon/wsl/v3 v3.3.0 // indirect
Expand Down Expand Up @@ -127,7 +126,6 @@ require (
github.com/google/go-tpm v0.3.2 // indirect
github.com/google/gofuzz v1.2.0 // indirect
github.com/googleapis/gax-go/v2 v2.3.0 // indirect
github.com/googleapis/gnostic v0.5.5 // indirect
github.com/gordonklaus/ineffassign v0.0.0-20210914165742-4cc7213b9bc8 // indirect
github.com/gorilla/mux v1.8.0 // indirect
github.com/gorilla/securecookie v1.1.1 // indirect
Expand Down
18 changes: 1 addition & 17 deletions go.sum
Original file line number Diff line number Diff line change
Expand Up @@ -739,7 +739,6 @@ github.com/googleapis/gax-go/v2 v2.3.0 h1:nRJtk3y8Fm770D42QV6T90ZnvFZyk7agSo3Q+Z
github.com/googleapis/gax-go/v2 v2.3.0/go.mod h1:b8LNqSzNabLiUpXKkY7HAR5jr6bIT99EXz9pXxye9YM=
github.com/googleapis/gnostic v0.4.1/go.mod h1:LRhVm6pbyptWbWbuZ38d1eyptfvIytN3ir6b65WBswg=
github.com/googleapis/gnostic v0.5.1/go.mod h1:6U4PtQXGIEt/Z3h5MAT7FNofLnw9vXk2cUuW7uA/OeU=
github.com/googleapis/gnostic v0.5.5 h1:9fHAtK0uDfpveeqqo1hkEZJcFvYXAiCN3UutL8F9xHw=
github.com/googleapis/gnostic v0.5.5/go.mod h1:7+EbHbldMins07ALC74bsA81Ovc97DwqyJO1AENw9kA=
github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
github.com/gookit/color v1.5.0/go.mod h1:43aQb+Zerm/BWh2GnrgOQm7ffz7tvQXEKV6BFMl7wAo=
Expand Down Expand Up @@ -1061,8 +1060,8 @@ github.com/moby/sys/mountinfo v0.4.1/go.mod h1:rEr8tzG/lsIZHBtN/JjGG+LMYx9eXgW2J
github.com/moby/sys/symlink v0.1.0/go.mod h1:GGDODQmbFOjFsXvfLVn3+ZRxkch54RkSiGqsZeMYowQ=
github.com/moby/term v0.0.0-20200312100748-672ec06f55cd/go.mod h1:DdlQx2hp0Ss5/fLikoLlEeIYiATotOjgB//nb973jeo=
github.com/moby/term v0.0.0-20201216013528-df9cb8a40635/go.mod h1:FBS0z0QWA44HXygs7VXDUOGoN/1TV3RuWkLO04am3wc=
github.com/moby/term v0.0.0-20210610120745-9d4ed1856297 h1:yH0SvLzcbZxcJXho2yh7CqdENGMQe73Cw3woZBpPli0=
github.com/moby/term v0.0.0-20210610120745-9d4ed1856297/go.mod h1:vgPCkQMyxTZ7IDy8SXRufE172gr8+K/JE/7hHFxHW3A=
github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 h1:dcztxKSvZ4Id8iPpHERQBbIJfabdt4wUm5qy3wOL2Zc=
github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6/go.mod h1:E2VnQOmVuvZB6UYnnDB0qG5Nq/1tD9acaOpo6xmt0Kw=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
Expand Down Expand Up @@ -1948,7 +1947,6 @@ golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxb
golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac h1:7zkz7BUtwNFFqcowJ+RIgu2MaV/MapERkDIy+mwPyjs=
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 h1:vVKdlvoWBphwdxWKrFZEuM0kGgGLxUOYcY4U/2Vjg44=
golang.org/x/time v0.0.0-20220210224613-90d013bbcef8/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
Expand Down Expand Up @@ -2329,8 +2327,6 @@ k8s.io/api v0.20.1/go.mod h1:KqwcCVogGxQY3nBlRpwt+wpAMF/KjaCc7RpywacvqUo=
k8s.io/api v0.20.4/go.mod h1:++lNL1AJMkDymriNniQsWRkMDzRaX2Y/POTUi8yvqYQ=
k8s.io/api v0.20.6/go.mod h1:X9e8Qag6JV/bL5G6bU8sdVRltWKmdHsFUGS3eVndqE8=
k8s.io/api v0.23.5/go.mod h1:Na4XuKng8PXJ2JsploYYrivXrINeTaycCGcYgF91Xm8=
k8s.io/api v0.23.6 h1:yOK34wbYECH4RsJbQ9sfkFK3O7f/DUHRlzFehkqZyVw=
k8s.io/api v0.23.6/go.mod h1:1kFaYxGCFHYp3qd6a85DAj/yW8aVD6XLZMqJclkoi9g=
k8s.io/api v0.24.0 h1:J0hann2hfxWr1hinZIDefw7Q96wmCBx6SSB8IY0MdDg=
k8s.io/api v0.24.0/go.mod h1:5Jl90IUrJHUJYEMANRURMiVvJ0g7Ax7r3R1bqO8zx8I=
k8s.io/apiextensions-apiserver v0.23.5 h1:5SKzdXyvIJKu+zbfPc3kCbWpbxi+O+zdmAJBm26UJqI=
Expand All @@ -2339,33 +2335,25 @@ k8s.io/apimachinery v0.20.1/go.mod h1:WlLqWAHZGg07AeltaI0MV5uk1Omp8xaN0JGLY6gkRp
k8s.io/apimachinery v0.20.4/go.mod h1:WlLqWAHZGg07AeltaI0MV5uk1Omp8xaN0JGLY6gkRpU=
k8s.io/apimachinery v0.20.6/go.mod h1:ejZXtW1Ra6V1O5H8xPBGz+T3+4gfkTCeExAHKU57MAc=
k8s.io/apimachinery v0.23.5/go.mod h1:BEuFMMBaIbcOqVIJqNZJXGFTP4W6AycEpb5+m/97hrM=
k8s.io/apimachinery v0.23.6 h1:RH1UweWJkWNTlFx0D8uxOpaU1tjIOvVVWV/bu5b3/NQ=
k8s.io/apimachinery v0.23.6/go.mod h1:BEuFMMBaIbcOqVIJqNZJXGFTP4W6AycEpb5+m/97hrM=
k8s.io/apimachinery v0.24.0 h1:ydFCyC/DjCvFCHK5OPMKBlxayQytB8pxy8YQInd5UyQ=
k8s.io/apimachinery v0.24.0/go.mod h1:82Bi4sCzVBdpYjyI4jY6aHX+YCUchUIrZrXKedjd2UM=
k8s.io/apiserver v0.20.1/go.mod h1:ro5QHeQkgMS7ZGpvf4tSMx6bBOgPfE+f52KwvXfScaU=
k8s.io/apiserver v0.20.4/go.mod h1:Mc80thBKOyy7tbvFtB4kJv1kbdD0eIH8k8vianJcbFM=
k8s.io/apiserver v0.20.6/go.mod h1:QIJXNt6i6JB+0YQRNcS0hdRHJlMhflFmsBDeSgT1r8Q=
k8s.io/apiserver v0.23.5/go.mod h1:7wvMtGJ42VRxzgVI7jkbKvMbuCbVbgsWFT7RyXiRNTw=
k8s.io/apiserver v0.23.6 h1:p94LiXcsSnpSDIl4cv98liBuFKcaygSCNopFNfMg/Ac=
k8s.io/apiserver v0.23.6/go.mod h1:5PU32F82tfErXPmf7FXhd/UcuLfh97tGepjKUgJ2atg=
k8s.io/apiserver v0.24.0 h1:GR7kGsjOMfilRvlG3Stxv/3uz/ryvJ/aZXc5pqdsNV0=
k8s.io/apiserver v0.24.0/go.mod h1:WFx2yiOMawnogNToVvUYT9nn1jaIkMKj41ZYCVycsBA=
k8s.io/client-go v0.20.1/go.mod h1:/zcHdt1TeWSd5HoUe6elJmHSQ6uLLgp4bIJHVEuy+/Y=
k8s.io/client-go v0.20.4/go.mod h1:LiMv25ND1gLUdBeYxBIwKpkSC5IsozMMmOOeSJboP+k=
k8s.io/client-go v0.20.6/go.mod h1:nNQMnOvEUEsOzRRFIIkdmYOjAZrC8bgq0ExboWSU1I0=
k8s.io/client-go v0.23.5/go.mod h1:flkeinTO1CirYgzMPRWxUCnV0G4Fbu2vLhYCObnt/r4=
k8s.io/client-go v0.23.6 h1:7h4SctDVQAQbkHQnR4Kzi7EyUyvla5G1pFWf4+Od7hQ=
k8s.io/client-go v0.23.6/go.mod h1:Umt5icFOMLV/+qbtZ3PR0D+JA6lvvb3syzodv4irpK4=
k8s.io/client-go v0.24.0 h1:lbE4aB1gTHvYFSwm6eD3OF14NhFDKCejlnsGYlSJe5U=
k8s.io/client-go v0.24.0/go.mod h1:VFPQET+cAFpYxh6Bq6f4xyMY80G6jKKktU6G0m00VDw=
k8s.io/code-generator v0.23.5/go.mod h1:S0Q1JVA+kSzTI1oUvbKAxZY/DYbA/ZUb4Uknog12ETk=
k8s.io/component-base v0.20.1/go.mod h1:guxkoJnNoh8LNrbtiQOlyp2Y2XFCZQmrcg2n/DeYNLk=
k8s.io/component-base v0.20.4/go.mod h1:t4p9EdiagbVCJKrQ1RsA5/V4rFQNDfRlevJajlGwgjI=
k8s.io/component-base v0.20.6/go.mod h1:6f1MPBAeI+mvuts3sIdtpjljHWBQ2cIy38oBIWMYnrM=
k8s.io/component-base v0.23.5/go.mod h1:c5Nq44KZyt1aLl0IpHX82fhsn84Sb0jjzwjpcA42bY0=
k8s.io/component-base v0.23.6 h1:8dhVZ4VrRcNdV2EGjl8tj8YOHwX6ysgCGMJ2Oyy0NW8=
k8s.io/component-base v0.23.6/go.mod h1:FGMPeMrjYu0UZBSAFcfloVDplj9IvU+uRMTOdE23Fj0=
k8s.io/component-base v0.24.0 h1:h5jieHZQoHrY/lHG+HyrSbJeyfuitheBvqvKwKHVC0g=
k8s.io/component-base v0.24.0/go.mod h1:Dgazgon0i7KYUsS8krG8muGiMVtUZxG037l1MKyXgrA=
k8s.io/cri-api v0.17.3/go.mod h1:X1sbHmuXhwaHs9xxYffLqJogVsnI+f6cPRcgPel7ywM=
Expand All @@ -2377,19 +2365,16 @@ k8s.io/gengo v0.0.0-20210813121822-485abfe95c7c/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAE
k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
k8s.io/klog/v2 v2.30.0 h1:bUO6drIvCIsvZ/XFgfxoGFQU/a4Qkh0iAlvUR7vlHJw=
k8s.io/klog/v2 v2.30.0/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
k8s.io/klog/v2 v2.60.1 h1:VW25q3bZx9uE3vvdL6M8ezOX79vA2Aq1nEWLqNQclHc=
k8s.io/klog/v2 v2.60.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd/go.mod h1:WOJ3KddDSol4tAGcJo0Tvi+dK12EcqSLqcWsryKMpfM=
k8s.io/kube-openapi v0.0.0-20211115234752-e816edb12b65 h1:E3J9oCLlaobFUqsjG9DfKbP2BmgwBL2p7pn0A3dG9W4=
k8s.io/kube-openapi v0.0.0-20211115234752-e816edb12b65/go.mod h1:sX9MT8g7NVZM5lVL/j8QyCCJe8YSMW30QvGZWaCIDIk=
k8s.io/kube-openapi v0.0.0-20220328201542-3ee0da9b0b42 h1:Gii5eqf+GmIEwGNKQYQClCayuJCe2/4fZUvF7VG99sU=
k8s.io/kube-openapi v0.0.0-20220328201542-3ee0da9b0b42/go.mod h1:Z/45zLw8lUo4wdiUkI+v/ImEGAvu3WatcZl3lPMR4Rk=
k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
k8s.io/utils v0.0.0-20210802155522-efc7438f0176/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
k8s.io/utils v0.0.0-20211116205334-6203023598ed h1:ck1fRPWPJWsMd8ZRFsWc6mh/zHp5fZ/shhbrgPUxDAE=
k8s.io/utils v0.0.0-20211116205334-6203023598ed/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9 h1:HNSDgDCrr/6Ly3WEGKZftiE7IY19Vz2GdbOCyI4qqhc=
k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
Expand All @@ -2410,7 +2395,6 @@ sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyz
sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.30/go.mod h1:fEO7lRTdivWO2qYVCVG7dEADOMo/MLDCVr8So2g88Uw=
sigs.k8s.io/controller-runtime v0.11.2 h1:H5GTxQl0Mc9UjRJhORusqfJCIjBO8UtUxGggCwL1rLA=
sigs.k8s.io/controller-runtime v0.11.2/go.mod h1:P6QCzrEjLaZGqHsfd+os7JQ+WFZhvB8MRFsn4dWF7O4=
sigs.k8s.io/json v0.0.0-20211020170558-c049b76a60c6 h1:fD1pz4yfdADVNfFmcP2aBEtudwUQ1AlLnRBALr33v3s=
sigs.k8s.io/json v0.0.0-20211020170558-c049b76a60c6/go.mod h1:p4QtZmO4uMYipTQNzagwnNoseA6OxSUutVw05NhYDRs=
sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 h1:kDi4JBNAsJWfz1aEXhO8Jg87JJaPNLh5tIzYHgStQ9Y=
sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2/go.mod h1:B+TnT182UBxE84DiCz4CVE26eOSDAeYCpfDnC2kdKMY=
Expand Down
9 changes: 9 additions & 0 deletions model/ingress_config.go
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,15 @@ const (
UseServiceProxy = "service_proxy_upstream"
// TCPUpstream indicates this route is a TCP service https://www.pomerium.com/docs/tcp/
TCPUpstream = "tcp_upstream"
// KubernetesServiceAccountTokenSecret allows k8s service authentication via pomerium
// nolint: gosec
KubernetesServiceAccountTokenSecret = "kubernetes_service_account_token_secret"
// KubernetesServiceAccountTokenSecretKey defines key within the secret that contains token
KubernetesServiceAccountTokenSecretKey = "token"
// SetRequestHeadersSecret defines a secret to copy request headers from
SetRequestHeadersSecret = "set_request_headers_secret"
// SetResponseHeadersSecret defines a secret to copy response headers from
SetResponseHeadersSecret = "set_response_headers_secret"
)

// IngressConfig represents ingress and all other required resources
Expand Down
63 changes: 62 additions & 1 deletion pomerium/ingress_annotations.go
Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,11 @@ var (
model.TLSClientSecret,
model.TLSDownstreamClientCASecret,
})
secretAnnotations = boolMap([]string{
model.KubernetesServiceAccountTokenSecret,
model.SetRequestHeadersSecret,
model.SetResponseHeadersSecret,
})
handledElsewhere = boolMap([]string{
model.SecureUpstream,
model.PathRegex,
Expand All @@ -87,7 +92,7 @@ func boolMap(keys []string) map[string]bool {
}

type keys struct {
Base, Envoy, Policy, TLS, Etc map[string]string
Base, Envoy, Policy, TLS, Etc, Secret map[string]string
}

func removeKeyPrefix(src map[string]string, prefix string) (*keys, error) {
Expand All @@ -98,6 +103,7 @@ func removeKeyPrefix(src map[string]string, prefix string) (*keys, error) {
Policy: make(map[string]string),
TLS: make(map[string]string),
Etc: make(map[string]string),
Secret: make(map[string]string),
}
for k, v := range src {
if !strings.HasPrefix(k, prefix) {
Expand All @@ -113,6 +119,7 @@ func removeKeyPrefix(src map[string]string, prefix string) (*keys, error) {
{envoyAnnotations, kv.Envoy},
{policyAnnotations, kv.Policy},
{tlsAnnotations, kv.TLS},
{secretAnnotations, kv.Secret},
{handledElsewhere, kv.Etc},
} {
if m.keys[k] {
Expand Down Expand Up @@ -161,6 +168,9 @@ func applyAnnotations(
if err = applyTLSAnnotations(r, kv.TLS, ic.Secrets, ic.Ingress.Namespace); err != nil {
return err
}
if err = applySecretAnnotations(r, kv.Secret, ic.Secrets, ic.Ingress.Namespace); err != nil {
return err
}
p := new(pomerium.Policy)
r.Policies = []*pomerium.Policy{p}
if err := unmarshallPolicyAnnotations(p, kv.Policy); err != nil {
Expand Down Expand Up @@ -250,6 +260,44 @@ func applyTLSAnnotations(
return nil
}

func applySecretAnnotations(
r *pomerium.Route,
kvs map[string]string,
secrets map[types.NamespacedName]*corev1.Secret,
namespace string,
) error {
for k, name := range kvs {
secret := secrets[types.NamespacedName{Namespace: namespace, Name: name}]
if secret == nil {
return fmt.Errorf("annotation %s references secret %s, but the secret wasn't fetched. this is a bug", k, name)
}
switch k {
case model.KubernetesServiceAccountTokenSecret:
token, ok := secret.Data[model.KubernetesServiceAccountTokenSecretKey]
if !ok {
return fmt.Errorf("annotation %s references secret %s that must have a %s key that is missing",
k, name, model.KubernetesServiceAccountTokenSecretKey)
}
r.KubernetesServiceAccountToken = string(token)
case model.SetRequestHeadersSecret:
dst, err := mergeMaps(r.SetRequestHeaders, secret.Data)
if err != nil {
return fmt.Errorf("%s: %w", model.SetRequestHeadersSecret, err)
}
r.SetRequestHeaders = dst
case model.SetResponseHeadersSecret:
dst, err := mergeMaps(r.SetResponseHeaders, secret.Data)
if err != nil {
return fmt.Errorf("%s: %w", model.SetResponseHeadersSecret, err)
}
r.SetResponseHeaders = dst
default:
return fmt.Errorf("unknown annotation %s", k)
}
}
return nil
}

func b64(secret *corev1.Secret, annotation, key string) (string, error) {
data := secret.Data[key]
if len(data) == 0 {
Expand All @@ -258,3 +306,16 @@ func b64(secret *corev1.Secret, annotation, key string) (string, error) {
}
return base64.StdEncoding.EncodeToString(data), nil
}

func mergeMaps(dst map[string]string, src map[string][]byte) (map[string]string, error) {
if dst == nil {
dst = make(map[string]string)
}
for key, data := range src {
if _, there := dst[key]; there {
return nil, fmt.Errorf("secret contains key %s that was already specified by a non-secret rule", key)
}
dst[key] = string(data)
}
return dst, nil
}
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