add TLS support

.github/workflows/build.yaml

@@ -0,0 +1,31 @@
+name: build
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16.4
+      -
+        name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      -
+        name: Tests
+        run: |
+          go mod tidy
+          go test -v ./...

.github/workflows/release.yaml

@@ -9,18 +9,38 @@ permissions:
   contents: write
 
 jobs:
-  goreleaser:
+  build-artifacts:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-go@v2
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
         with:
-          go-version: '1.16.5'
+          go-version: 1.16.4
+      -
+        name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      -
+        name: Tests
+        run: |
+          go mod tidy
+          go test -v ./...
       -
         name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
+        if: success() && startsWith(github.ref, 'refs/tags/')
         with:
           version: latest
           args: release --rm-dist
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yml

@@ -2,31 +2,10 @@
 # Make sure to check the documentation at http://goreleaser.com
 before:
   hooks:
-    # You may remove this if you don't use go modules.
     - go mod tidy
-    # you may remove this if you don't need go generate
-    - go generate ./...
 builds:
-  - env:
-      - CGO_ENABLED=0
+  - env: [CGO_ENABLED=0]
     goos:
       - linux
-      - windows
-      - darwin
-archives:
-  - replacements:
-      darwin: Darwin
-      linux: Linux
-      windows: Windows
-      386: i386
-      amd64: x86_64
-checksum:
-  name_template: 'checksums.txt'
-snapshot:
-  name_template: "{{ .Tag }}-next"
-changelog:
-  sort: asc
-  filters:
-    exclude:
-      - '^docs:'
-      - '^test:'
+    goarch:
+      - amd64

README.md

@@ -160,6 +160,26 @@ An example of the network where you have to specify all the prefixes manually is
 
 Additionally, you can pass a `--config` flag with a path to your config file (I use `.toml`, but anything supported by [viper](https://github.com/spf13/viper) should work).
 
+## TLS endpoint
+
+** EXPERIMENTAL **
+
+The exporter supports TLS via a new web configuration file.
+
+```console
+./cosmos-exporter --web-config=web-config.yml
+```
+### Web config example
+```toml
+tls_server_config:
+  cert_file: /path/to/server.crt
+  key_file: /path/to/server.key
+
+basic_auth_users:
+  prometheus: "$2y$10$QOauhQNbBCuQDKes6eFzPeMqBSjb7Mr5DUmpZ/VcEd00UAV/LDeSi"
+```
+See the [exporter-toolkit https package](https://github.com/prometheus/exporter-toolkit/blob/v0.1.0/https/README.md) for more details.
+
 ## Which networks this is guaranteed to work?
 
 In theory, it should work on a Cosmos-based blockchains with cosmos-sdk >= 0.40.0 (that's when they added gRPC and IBC support). If this doesn't work on some chains, please file and issue and let's see what's up.

go.mod

@@ -8,8 +8,10 @@ replace google.golang.org/grpc => google.golang.org/grpc v1.33.2
 
 require (
 	github.com/cosmos/cosmos-sdk v0.42.4
+	github.com/go-kit/log v0.2.1
 	github.com/google/uuid v1.2.0
-	github.com/prometheus/client_golang v1.8.0
+	github.com/prometheus/client_golang v1.11.0
+	github.com/prometheus/exporter-toolkit v0.7.1
 	github.com/rs/zerolog v1.20.0
 	github.com/spf13/cobra v1.1.1
 	github.com/spf13/pflag v1.0.5