migration: add migration functionality

Support the migration of bbolt db database to SQL databases (SQLITE/POSTGRES)

Author: ziggie1984

Makefile

@@ -22,7 +22,11 @@ XARGS := xargs -L 1
 
 VERSION_TAG = $(shell git describe --tags)
 
+DEV_TAGS = kvdb_etcd kvdb_postgres kvdb_sqlite
+RELEASE_TAGS = $(DEV_TAGS)
+
 BUILD_SYSTEM = darwin-amd64 \
+darwin-arm64 \
 linux-386 \
 linux-amd64 \
 linux-armv6 \
@@ -49,7 +53,7 @@ endif
 make_ldflags = $(2) -X $(PKG).Commit=$(COMMIT)
 
 DEV_GCFLAGS := -gcflags "all=-N -l"
-LDFLAGS := -ldflags "$(call make_ldflags, ${tags}, -s -w)"
+LDFLAGS := -ldflags "$(call make_ldflags, $(DEV_TAGS), -s -w)"
 DEV_LDFLAGS := -ldflags "$(call make_ldflags, $(DEV_TAGS))"
 
 # For the release, we want to remove the symbol table and debug information (-s)
@@ -83,7 +87,7 @@ build:
 
 install:
 	@$(call print, "Installing lndinit.")
-	$(GOINSTALL) -tags="${tags}" $(LDFLAGS) $(PKG)
+	$(GOINSTALL) -tags="$(DEV_TAGS)" $(LDFLAGS) $(PKG)
 
 release-install:
 	@$(call print, "Installing release lndinit.")
@@ -105,7 +109,7 @@ scratch: build
 
 unit: 
 	@$(call print, "Running unit tests.")
-	$(GOTEST) ./...
+	$(GOTEST) -tags="$(DEV_TAGS)" ./...
 
 fmt: $(GOIMPORTS_BIN)
 	@$(call print, "Fixing imports.")
@@ -115,7 +119,7 @@ fmt: $(GOIMPORTS_BIN)
 
 lint: docker-tools
 	@$(call print, "Linting source.")
-	$(DOCKER_TOOLS) golangci-lint run -v $(LINT_WORKERS)
+	$(DOCKER_TOOLS) golangci-lint run -v --build-tags="$(DEV_TAGS)"$(LINT_WORKERS)
 
 vendor:
 	@$(call print, "Re-creating vendor directory.")

README.md

@@ -13,6 +13,7 @@ initialization, including seed and password generation.
   - [`store-configmap`](#store-configmap)
   - [`init-wallet`](#init-wallet)
   - [`wait-ready`](#wait-ready)
+  - [`migrate-db`](#migrate-db)
 - [Example usage](#example-usage)
   - [Basic setup](#example-use-case-1-basic-setup)
   - [Kubernetes](#example-use-case-2-kubernetes)
@@ -64,6 +65,11 @@ No `lnd` needed, but seed will be in `lnd`-specific [`aezeed` format](https://gi
 `wait-ready` waits for `lnd` to be ready by connecting to `lnd`'s status RPC
 - Needs `lnd` to run, eventually
 
+### migrate-db
+`migrate-db` migrates the content of one `lnd` database to another, for example
+from `bbolt` to Postgres. See [data migration guide](docs/data-migration.md) for
+more information.
+
 ---
 
 ## Example Usage