metadata: split context to incoming and outgoing
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
1de9911b73
commit
0e51a79bb6
@ -187,7 +187,7 @@ func (n *noopClient) Publish(ctx context.Context, p Message, opts ...PublishOpti
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options := NewPublishOptions(opts...)
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md, ok := metadata.FromContext(ctx)
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md, ok := metadata.FromOutgoingContext(ctx)
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if !ok {
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md = metadata.New(0)
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}
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6
go.mod
6
go.mod
@ -7,15 +7,15 @@ require (
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github.com/dgrijalva/jwt-go v3.2.0+incompatible
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github.com/ef-ds/deque v1.0.4
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github.com/golang/protobuf v1.4.3
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github.com/google/uuid v1.1.5
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github.com/google/uuid v1.2.0
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github.com/imdario/mergo v0.3.11
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github.com/kr/text v0.2.0 // indirect
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github.com/miekg/dns v1.1.35
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github.com/miekg/dns v1.1.38
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
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github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c
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github.com/stretchr/testify v1.7.0
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golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
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golang.org/x/net v0.0.0-20201224014010-6772e930b67b
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777
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golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
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google.golang.org/protobuf v1.25.0
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gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
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13
go.sum
13
go.sum
@ -31,16 +31,16 @@ github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
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github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/uuid v1.1.5 h1:kxhtnfFVi+rYdOALN0B3k9UT86zVJKfBimRaciULW4I=
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github.com/google/uuid v1.1.5/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
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github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
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github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
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github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
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github.com/miekg/dns v1.1.35 h1:oTfOaDH+mZkdcgdIjH6yBajRGtIwcwcaR+rt23ZSrJs=
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github.com/miekg/dns v1.1.35/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
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github.com/miekg/dns v1.1.38 h1:MtIY+fmHUVVgv1AXzmKMWcwdCYxTRPG1EDjpqF4RCEw=
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github.com/miekg/dns v1.1.38/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
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github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c h1:rp5dCmg/yLR3mgFuSOe4oEnDDmGLROTvMragMUXpTQw=
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@ -52,7 +52,6 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
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github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/unistack-org/micro v1.18.0 h1:EbFiII0bKV0Xcua7o6J30MFmm4/g0Hv3ECOKzsUBihU=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad h1:DN0cp81fZ3njFcrLCytUHRSUkqBjfTo4Tx9RJTWs0EY=
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@ -69,8 +68,8 @@ golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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golang.org/x/net v0.0.0-20201224014010-6772e930b67b h1:iFwSg7t5GZmB/Q5TjiEAsdoLDrdJRC1RiF2WhuV29Qw=
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golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@ -5,35 +5,64 @@ import (
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"context"
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)
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type mdIncomingKey struct{}
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type mdOutgoingKey struct{}
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type mdKey struct{}
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// FromIncomingContext returns metadata from incoming ctx
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// returned metadata shoud not be modified or race condition happens
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func FromIncomingContext(ctx context.Context) (Metadata, bool) {
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if ctx == nil {
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return nil, false
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}
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md, ok := ctx.Value(mdIncomingKey{}).(Metadata)
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return md, ok
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}
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// FromOutgoingContext returns metadata from outgoing ctx
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// returned metadata shoud not be modified or race condition happens
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func FromOutgoingContext(ctx context.Context) (Metadata, bool) {
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if ctx == nil {
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return nil, false
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}
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md, ok := ctx.Value(mdOutgoingKey{}).(Metadata)
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return md, ok
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}
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// FromContext returns metadata from the given context
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// returned metadata shoud not be modified or race condition happens
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//
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// Deprecated: use FromIncomingContext or FromOutgoingContext
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func FromContext(ctx context.Context) (Metadata, bool) {
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if ctx == nil {
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return nil, false
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}
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md, ok := ctx.Value(metadataKey{}).(Metadata)
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if !ok {
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return nil, ok
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}
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nmd := Copy(md)
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return nmd, ok
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md, ok := ctx.Value(mdKey{}).(Metadata)
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return md, ok
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}
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// NewContext creates a new context with the given metadata
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//
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// Deprecated: use NewIncomingContext or NewOutgoingContext
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func NewContext(ctx context.Context, md Metadata) context.Context {
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if ctx == nil {
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ctx = context.Background()
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}
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return context.WithValue(ctx, metadataKey{}, Copy(md))
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return context.WithValue(ctx, mdKey{}, md)
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}
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// MergeContext merges metadata to existing metadata, overwriting if specified
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func MergeContext(ctx context.Context, pmd Metadata, overwrite bool) context.Context {
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// NewIncomingContext creates a new context with incoming metadata attached
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func NewIncomingContext(ctx context.Context, md Metadata) context.Context {
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if ctx == nil {
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ctx = context.Background()
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}
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md, ok := FromContext(ctx)
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if !ok {
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return context.WithValue(ctx, metadataKey{}, Copy(pmd))
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}
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return context.WithValue(ctx, metadataKey{}, Merge(md, pmd, overwrite))
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return context.WithValue(ctx, mdIncomingKey{}, md)
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}
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// NewOutgoingContext creates a new context with outcoming metadata attached
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func NewOutgoingContext(ctx context.Context, md Metadata) context.Context {
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if ctx == nil {
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ctx = context.Background()
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}
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return context.WithValue(ctx, mdOutgoingKey{}, md)
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}
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@ -2,7 +2,6 @@
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package metadata
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import (
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"context"
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"net/textproto"
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"sort"
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)
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@ -12,16 +11,14 @@ var (
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HeaderPrefix = "Micro-"
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)
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type metadataKey struct{}
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// Metadata is our way of representing request headers internally.
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// They're used at the RPC level and translate back and forth
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// from Transport headers.
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type Metadata map[string]string
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var (
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// DefaultMetadataSize used when need to init new Metadata
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DefaultMetadataSize = 6
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// defaultMetadataSize used when need to init new Metadata
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defaultMetadataSize = 2
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)
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type Iterator struct {
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@ -72,12 +69,9 @@ func (md Metadata) Set(key, val string) {
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// Del is used to remove value from metadata
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func (md Metadata) Del(key string) {
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// fast path
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if _, ok := md[key]; ok {
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delete(md, key)
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} else {
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// slow path
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delete(md, textproto.CanonicalMIMEHeaderKey(key))
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}
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delete(md, key)
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// slow path
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delete(md, textproto.CanonicalMIMEHeaderKey(key))
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}
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// Copy makes a copy of the metadata
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@ -89,39 +83,10 @@ func Copy(md Metadata) Metadata {
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return nmd
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}
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// Del deletes key from metadata
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func Del(ctx context.Context, key string) context.Context {
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md, ok := FromContext(ctx)
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if !ok {
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md = New(0)
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}
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md.Del(key)
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return context.WithValue(ctx, metadataKey{}, md)
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}
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// Set add key with val to metadata
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func Set(ctx context.Context, key, val string) context.Context {
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md, ok := FromContext(ctx)
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if !ok {
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md = New(0)
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}
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md.Set(key, val)
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return context.WithValue(ctx, metadataKey{}, md)
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}
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// Get returns a single value from metadata in the context
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func Get(ctx context.Context, key string) (string, bool) {
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md, ok := FromContext(ctx)
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if !ok {
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return "", ok
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}
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return md.Get(key)
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}
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// New return new sized metadata
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func New(size int) Metadata {
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if size == 0 {
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size = DefaultMetadataSize
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size = defaultMetadataSize
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}
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return make(Metadata, size)
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}
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@ -2,8 +2,6 @@ package metadata
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import (
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"context"
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"fmt"
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"reflect"
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"testing"
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)
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@ -32,26 +30,27 @@ func TestIterator(t *testing.T) {
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var k, v string
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for iter.Next(&k, &v) {
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fmt.Printf("k: %s, v: %s\n", k, v)
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//fmt.Printf("k: %s, v: %s\n", k, v)
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}
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}
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func TestMedataCanonicalKey(t *testing.T) {
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ctx := Set(context.TODO(), "x-request-id", "12345")
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v, ok := Get(ctx, "x-request-id")
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md := New(1)
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md.Set("x-request-id", "12345")
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v, ok := md.Get("x-request-id")
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if !ok {
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t.Fatalf("failed to get x-request-id")
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} else if v != "12345" {
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t.Fatalf("invalid metadata value: %s != %s", "12345", v)
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}
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v, ok = Get(ctx, "X-Request-Id")
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v, ok = md.Get("X-Request-Id")
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if !ok {
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t.Fatalf("failed to get x-request-id")
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} else if v != "12345" {
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t.Fatalf("invalid metadata value: %s != %s", "12345", v)
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}
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v, ok = Get(ctx, "X-Request-ID")
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v, ok = md.Get("X-Request-ID")
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if !ok {
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t.Fatalf("failed to get x-request-id")
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} else if v != "12345" {
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@ -61,9 +60,11 @@ func TestMedataCanonicalKey(t *testing.T) {
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}
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func TestMetadataSet(t *testing.T) {
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ctx := Set(context.TODO(), "Key", "val")
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md := New(1)
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val, ok := Get(ctx, "Key")
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md.Set("Key", "val")
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val, ok := md.Get("Key")
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if !ok {
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t.Fatal("key Key not found")
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}
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@ -78,15 +79,8 @@ func TestMetadataDelete(t *testing.T) {
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"Baz": "empty",
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}
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ctx := NewContext(context.TODO(), md)
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ctx = Del(ctx, "Baz")
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emd, ok := FromContext(ctx)
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if !ok {
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t.Fatal("key Key not found")
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}
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_, ok = emd["Baz"]
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md.Del("Baz")
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_, ok := md.Get("Baz")
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if ok {
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t.Fatal("key Baz not deleted")
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}
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@ -137,42 +131,3 @@ func TestMetadataContext(t *testing.T) {
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t.Errorf("Expected metadata length 1 got %d", i)
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}
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}
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func TestMergeContext(t *testing.T) {
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type args struct {
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existing Metadata
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append Metadata
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overwrite bool
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}
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tests := []struct {
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name string
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args args
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want Metadata
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}{
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{
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name: "matching key, overwrite false",
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args: args{
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existing: Metadata{"Foo": "bar", "Sumo": "demo"},
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append: Metadata{"Sumo": "demo2"},
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overwrite: false,
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},
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want: Metadata{"Foo": "bar", "Sumo": "demo"},
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},
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{
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name: "matching key, overwrite true",
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args: args{
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existing: Metadata{"Foo": "bar", "Sumo": "demo"},
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append: Metadata{"Sumo": "demo2"},
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overwrite: true,
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},
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want: Metadata{"Foo": "bar", "Sumo": "demo2"},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got, _ := FromContext(MergeContext(NewContext(context.TODO(), tt.args.existing), tt.args.append, tt.args.overwrite)); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("MergeContext() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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|
@ -14,11 +14,12 @@ const (
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// FromContext returns a span from context
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func FromContext(ctx context.Context) (traceID string, parentSpanID string, isFound bool) {
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if ctx == nil {
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return "", "", false
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}
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traceID, traceOk := metadata.Get(ctx, traceIDKey)
|
||||
microID, microOk := metadata.Get(ctx, "Micro-Id")
|
||||
traceID, traceOk := md.Get(traceIDKey)
|
||||
microID, microOk := md.Get("Micro-Id")
|
||||
if !traceOk && !microOk {
|
||||
isFound = false
|
||||
return
|
||||
@ -26,17 +27,17 @@ func FromContext(ctx context.Context) (traceID string, parentSpanID string, isFo
|
||||
if !traceOk {
|
||||
traceID = microID
|
||||
}
|
||||
parentSpanID, ok := metadata.Get(ctx, spanIDKey)
|
||||
parentSpanID, ok = md.Get(spanIDKey)
|
||||
return traceID, parentSpanID, ok
|
||||
}
|
||||
|
||||
// NewContext saves the trace and span ids in the context
|
||||
func NewContext(ctx context.Context, traceID, parentSpanID string) context.Context {
|
||||
if ctx == nil {
|
||||
ctx = context.Background()
|
||||
md, ok := metadata.FromContext(ctx)
|
||||
if !ok {
|
||||
md = metadata.New(2)
|
||||
}
|
||||
md := metadata.New(2)
|
||||
md.Set(traceIDKey, traceID)
|
||||
md.Set(spanIDKey, parentSpanID)
|
||||
return metadata.MergeContext(ctx, md, true)
|
||||
return metadata.NewContext(ctx, md)
|
||||
}
|
||||
|
@ -10,10 +10,9 @@ import (
|
||||
|
||||
func FromRequest(r *http.Request) context.Context {
|
||||
ctx := r.Context()
|
||||
md, ok := metadata.FromContext(ctx)
|
||||
md, ok := metadata.FromIncomingContext(ctx)
|
||||
if !ok {
|
||||
// create needed map with specific len
|
||||
md = make(metadata.Metadata, len(r.Header)+2)
|
||||
md = metadata.New(len(r.Header) + 2)
|
||||
}
|
||||
for key, val := range r.Header {
|
||||
md.Set(key, strings.Join(val, ","))
|
||||
@ -22,5 +21,5 @@ func FromRequest(r *http.Request) context.Context {
|
||||
md["Host"] = r.Host
|
||||
// pass http method
|
||||
md["Method"] = r.Method
|
||||
return metadata.NewContext(ctx, md)
|
||||
return metadata.NewIncomingContext(ctx, md)
|
||||
}
|
||||
|
@ -28,7 +28,7 @@ func TestRequestToContext(t *testing.T) {
|
||||
|
||||
for _, d := range testData {
|
||||
ctx := FromRequest(d.request)
|
||||
md, ok := metadata.FromContext(ctx)
|
||||
md, ok := metadata.FromIncomingContext(ctx)
|
||||
if !ok {
|
||||
t.Fatalf("Expected metadata for request %+v", d.request)
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user