Initial implementation

.github/workflows/golangci-lint.yml

@@ -0,0 +1,45 @@
+# This file was copied from the following URL and modified:
+# https://github.com/golangci/golangci-lint-action/blob/master/README.md#how-to-use
+
+name: golangci-lint
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - master
+      - main
+  pull_request:
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  # pull-requests: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.17'
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
+          version: v1.45.2 # current version at time of commit
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true then the action don't cache or restore ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
+          # skip-build-cache: true

.gitignore

@@ -13,3 +13,6 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+# Binary
+/cardano-submit-api

Dockerfile

@@ -0,0 +1,9 @@
+FROM golang:1.17 AS build
+
+WORKDIR /code
+COPY . .
+RUN make build
+
+FROM ubuntu:focal AS final
+COPY --from=build /code/cardano-submit-api /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/cardano-submit-api"]

Makefile

@@ -0,0 +1,23 @@
+BINARY=cardano-submit-api
+
+# Determine root directory
+ROOT_DIR=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
+
+# Gather all .go files for use in dependencies below
+GO_FILES=$(shell find $(ROOT_DIR) -name '*.go')
+
+# Build our program binary
+# Depends on GO_FILES to determine when rebuild is needed
+$(BINARY): $(GO_FILES)
+	# Needed to fetch new dependencies and add them to go.mod
+	go mod tidy
+	go build -o $(BINARY) ./cmd/$(BINARY)
+
+.PHONY: build image
+
+# Alias for building program binary
+build: $(BINARY)
+
+# Build docker image
+image: build
+	docker build -t cloudstruct/$(BINARY) .

cmd/cardano-submit-api/main.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/cloudstruct/go-cardano-submit-api/internal/api"
+	"github.com/cloudstruct/go-cardano-submit-api/internal/config"
+	"github.com/cloudstruct/go-cardano-submit-api/internal/logging"
+	"os"
+)
+
+var cmdlineFlags struct {
+	configFile string
+}
+
+func main() {
+	flag.StringVar(&cmdlineFlags.configFile, "config", "", "path to config file to load")
+	flag.Parse()
+
+	// Load config
+	cfg, err := config.Load(cmdlineFlags.configFile)
+	if err != nil {
+		fmt.Printf("Failed to load config: %s\n", err)
+		os.Exit(1)
+	}
+
+	// Configure logging
+	logging.Setup(&cfg.Logging)
+	logger := logging.GetLogger()
+	// Sync logger on exit
+	defer func() {
+		if err := logger.Sync(); err != nil {
+			// We don't actually care about the error here, but we have to do something
+			// to appease the linter
+			return
+		}
+	}()
+
+	// Start API listener
+	logger.Infof("starting API listener on %s:%d", cfg.Api.ListenAddress, cfg.Api.ListenPort)
+	if err := api.Start(cfg); err != nil {
+		logger.Fatalf("failed to start API: %s", err)
+	}
+
+	// Wait forever
+	select {}
+}

config.yaml.example

@@ -0,0 +1,35 @@
+---
+# Example config file for cardano-submit-api
+# The values shown below correspond to the in-code defaults
+
+logging:
+  # Logging level
+  #
+  # This can also be set via the LOGGING_LEVEL environment variable
+  level: info
+
+api:
+  # Listen address for the API
+  #
+  # This can also be set via the API_LISTEN_ADDRESS environment variable
+  address:
+
+  # Listen port for the API
+  #
+  # This can also be set via the API_LISTEN_PORT environment variable
+  port: 8090
+
+node:
+  # Path to UNIX socket file for cardano-node
+  #
+  # This can also be set via the NODE_SOCKET_PATH environment variable
+  socketPath:
+
+  # Address/port for cardano-node
+  #
+  # This requires that you be running socat or similar to create a bridge
+  # between TCP and the UNIX socket.
+  #
+  # These can also be set via the NODE_ADDRESS and NODE_PORT environment variables
+  address:
+  port:

go.mod

@@ -0,0 +1,32 @@
+module github.com/cloudstruct/go-cardano-submit-api
+
+go 1.17
+
+require (
+	github.com/cloudstruct/go-ouroboros-network v0.13.0
+	github.com/fxamacker/cbor/v2 v2.4.0
+	github.com/gin-contrib/zap v0.0.2
+	github.com/gin-gonic/gin v1.7.7
+	github.com/kelseyhightower/envconfig v1.4.0
+	go.uber.org/zap v1.21.0
+	golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838
+	gopkg.in/yaml.v2 v2.4.0
+)
+
+require (
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.13.0 // indirect
+	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/go-playground/validator/v10 v10.4.1 // indirect
+	github.com/golang/protobuf v1.3.3 // indirect
+	github.com/json-iterator/go v1.1.9 // indirect
+	github.com/leodido/go-urn v1.2.0 // indirect
+	github.com/mattn/go-isatty v0.0.12 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
+	github.com/ugorji/go/codec v1.1.7 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect
+)

go.sum

@@ -0,0 +1,114 @@
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