Add small api for IP validation of members

Kamailio can use an API call to validate a source IP as a member of a
given dispatcher set.  This can be an easier, more direct way of
establishing source IP trust than separately maintaining that table.

If enabled (via the -api flag), the service will listen for HTTP
requests to `/check/<setID>/<ip address>` and return a 200 OK if and
only if that IP address is a member of that dispatcher set.

This also converts to go modules.

.goreleaser.yml

@@ -22,9 +22,8 @@ changelog:
        - '^docs:'
        - '^test:'
 dockers:
-   - image: cycoresystems/dispatchers
-     tag_templates:
-        - "{{ .Tag }}"
-        - "v{{ .Major }}"
-        - "v{{ .Major }}.{{ .Minor }}"
-        - latest
+   - image_templates:
+       - "cycoresystems/dispatchers:{{ .Tag }}"
+       - "cycoresystems/dispatchers:v{{ .Major }}"
+       - "cycoresystems/dispatchers:v{{ .Major }}.{{ .Minor }}"
+       - cycoresystems/dispatchers:latest

.travis.yml

@@ -1,10 +1,12 @@
 language: go
+env:
+   - GO111MODULE=on
 go:
-   - "1.11"
+   - "1.13"
 install:
-   - go get -u github.com/golang/dep/cmd/dep/...
-   - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b $GOPATH/bin v1.15.0
-   - curl -sfL https://github.com/goreleaser/goreleaser/releases/download/v0.101.0/goreleaser_Linux_x86_64.tar.gz | tar xfz - -C $GOPATH/bin goreleaser
+   - go mod tidy
+   - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b $GOPATH/bin v1.21.0
+   - curl -sfL https://github.com/goreleaser/goreleaser/releases/download/v0.123.3/goreleaser_Linux_x86_64.tar.gz | tar xfz - -C $GOPATH/bin goreleaser
 script: bash ci_check.sh
 services:
    - docker

ci_check.sh

@@ -1,5 +1,4 @@
 #!/bin/bash -e
-dep ensure
 golangci-lint run
 go test ./...
 go build ./...

go.mod

@@ -0,0 +1,15 @@
+module github.com/CyCoreSystems/dispatchers
+
+go 1.12
+
+require (
+	github.com/CyCoreSystems/go-kamailio v0.2.0
+	github.com/ericchiang/k8s v1.1.0
+	github.com/ghodss/yaml v1.0.0
+	github.com/golang/protobuf v1.1.0 // indirect
+	github.com/pkg/errors v0.8.0
+	golang.org/x/net v0.0.0-20180502164142-640f4622ab69 // indirect
+	golang.org/x/sync v0.0.0-20190423024810-112230192c58 // indirect
+	golang.org/x/text v0.3.0 // indirect
+	gopkg.in/yaml.v2 v2.2.1 // indirect
+)

go.sum

@@ -0,0 +1,20 @@
+github.com/CyCoreSystems/go-kamailio v0.2.0 h1:5B07UodsIQLI3OZ+CtSJX8yaetLI1C0vUNHmGymD42w=
+github.com/CyCoreSystems/go-kamailio v0.2.0/go.mod h1:oTRjwxfuRAZWbDbXRkUIBGIhd4bvu/H5Nkr9ozJZVSc=
+github.com/ericchiang/k8s v1.1.0 h1:XjBbrZhlvos0PtQrvvSIPAeinnrYM4c/QKB0CWfnoJU=
+github.com/ericchiang/k8s v1.1.0/go.mod h1:/OmBgSq2cd9IANnsGHGlEz27nwMZV2YxlpXuQtU3Bz4=
+github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/golang/protobuf v1.1.0 h1:0iH4Ffd/meGoXqF2lSAhZHt8X+cPgkfn/cb6Cce5Vpc=
+github.com/golang/protobuf v1.1.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+golang.org/x/net v0.0.0-20180502164142-640f4622ab69 h1:+Ybm3UzSfPpp+Hlr62ZTCtbC9DmCKX61f0r74+peGts=
+golang.org/x/net v0.0.0-20180502164142-640f4622ab69/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=