[WIP] Precise ccenv composition

Right now, ccenv is stuffed with the full fabric.git src,
when its intended to only carry just enough bits to
build a chaincode application.  This minimally entails
the golang shim and any direct or transitive deps.
It may include others in the future.

Change-Id: I01947870264b99959219160978449f3b97bc4a68
Signed-off-by: Greg Haskins <gregory.haskins@gmail.com>

Makefile

@@ -66,6 +66,7 @@ K := $(foreach exec,$(EXECUTABLES),\
 SUBDIRS = gotools sdk/node
 SUBDIRS:=$(strip $(SUBDIRS))
 
+GOSHIM_DEPS = $(shell ./scripts/goListFiles.sh github.com/hyperledger/fabric/core/chaincode/shim | sort | uniq)
 JAVASHIM_DEPS =  $(shell git ls-files core/chaincode/shim/java)
 PROJECT_FILES = $(shell git ls-files)
 IMAGES = src ccenv peer membersrvc javaenv
@@ -192,7 +193,7 @@ build/image/src/.dummy: $(PROJECT_FILES)
 	@touch $@
 
 # Special override for ccenv-image (chaincode-environment)
-build/image/ccenv/.dummy: build/image/src/.dummy build/image/ccenv/bin/protoc-gen-go build/image/ccenv/bin/chaintool Makefile
+build/image/ccenv/.dummy: build/image/ccenv/bin/protoc-gen-go build/image/ccenv/bin/chaintool build/image/ccenv/goshim.tar.bz2 Makefile
 	@echo "Building docker ccenv-image"
 	@cat images/ccenv/Dockerfile.in \
 		| sed -e 's/_BASE_TAG_/$(BASE_DOCKER_TAG)/g' \
@@ -234,6 +235,10 @@ build/image/%/.dummy: build/image/src/.dummy build/docker/bin/%
 	docker tag $(PROJECT_NAME)-$(TARGET) $(PROJECT_NAME)-$(TARGET):$(DOCKER_TAG)
 	@touch $@
 
+%/goshim.tar.bz2: $(GOSHIM_DEPS) Makefile
+	@echo "Creating $@"
+	@tar -jhc -C $(GOPATH)/src $(patsubst $(GOPATH)/src/%,%,$(GOSHIM_DEPS)) > $@
+
 .PHONY: protos
 protos: gotools
 	./devenv/compile_protos.sh

images/ccenv/Dockerfile.in

@@ -1,2 +1,3 @@
-FROM hyperledger/fabric-src:_TAG_
+FROM hyperledger/fabric-baseimage:_BASE_TAG_
 COPY bin/* /usr/local/bin/
+ADD goshim.tar.bz2 $GOPATH/src/

scripts/goListFiles.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+target=$1
+
+deps=`go list -f '{{ join .Deps "\n" }}' $target`
+
+find $GOPATH/src/$target -type f
+
+for dep in $deps;
+do
+    importpath=$GOPATH/src/$dep
+    if [ -d $importpath ];
+    then
+        find $importpath -type f
+    fi
+done