From 3a7132e8f44f6721ab30be46c29bad74ab865fc8 Mon Sep 17 00:00:00 2001
From: whyrusleeping <why@ipfs.io>
Date: Mon, 16 Sep 2019 12:14:06 -0700
Subject: [PATCH] use gateway of dedicated ipfs node for param downloads

---
 build/proof-params/paramfetch.sh | 74 +++++++++++++++++++++++++++++++-
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/build/proof-params/paramfetch.sh b/build/proof-params/paramfetch.sh
index b340afbab..eb55a312e 100755
--- a/build/proof-params/paramfetch.sh
+++ b/build/proof-params/paramfetch.sh
@@ -2,7 +2,76 @@
 
 set -euo pipefail
 
-IPGET_PARAMS="--node=spawn -p=/ip4/138.201.67.219/tcp/4002/ws/ipfs/QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA -p=/ip4/138.201.67.218/tcp/4002/ws/ipfs/QmbVWZQhCGrS7DhgLqWbgvdmKN7JueKCREVanfnVpgyq8x -p=/ip4/94.130.135.167/tcp/4002/ws/ipfs/QmUEMvxS2e7iDrereVYc5SWPauXPyNwxcy9BXZrC1QTcHE -p=/ip4/138.201.68.74/tcp/4001/ipfs/QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR -p=/ip4/138.201.67.220/tcp/4001/ipfs/QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i"
+die() {
+	echo "$@" >&2
+	exit 1
+}
+
+have_binary() {
+	type "$1" > /dev/null 2> /dev/null
+}
+
+check_writable() {
+	printf "" > "$1" && rm "$1"
+}
+
+try_download() {
+	url="$1"
+	output="$2"
+	command="$3"
+	util_name="$(set -- $command; echo "$1")"
+
+	if ! have_binary "$util_name"; then
+		return 1
+	fi
+
+	printf '==> Using %s to download "%s" to "%s"\n' "$util_name" "$url" "$output"
+	if eval "$command"; then
+		echo "==> Download complete!"
+		return
+	else
+		echo "error: couldn't download with $util_name ($?)"
+		return 1
+	fi
+}
+
+download() {
+	dl_url="$1"
+	dl_output="$2"
+
+	test "$#" -eq "2" || die "download requires exactly two arguments, was given $@"
+
+	if ! check_writable "$dl_output"; then
+		die "download error: cannot write to $dl_output"
+	fi
+
+	try_download "$dl_url" "$dl_output" "wget '$dl_url' -O '$dl_output'" && return
+	try_download "$dl_url" "$dl_output" "curl --silent --fail --output '$dl_output' '$dl_url'" && return
+	try_download "$dl_url" "$dl_output" "fetch '$dl_url' -o '$dl_output'" && return
+	try_download "$dl_url" "$dl_output" "http '$dl_url' > '$dl_output'" && return
+	try_download "$dl_url" "$dl_output" "ftp -o '$dl_output' '$dl_url'" && return
+
+	die "Unable to download $dl_url. exiting."
+}
+
+fetch_ipget() {
+  local dest="$1"
+  local cid="$2"
+
+  IPGET_PARAMS="--node=spawn -p=/ip4/138.201.67.219/tcp/4002/ws/ipfs/QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA -p=/ip4/138.201.67.218/tcp/4002/ws/ipfs/QmbVWZQhCGrS7DhgLqWbgvdmKN7JueKCREVanfnVpgyq8x -p=/ip4/94.130.135.167/tcp/4002/ws/ipfs/QmUEMvxS2e7iDrereVYc5SWPauXPyNwxcy9BXZrC1QTcHE -p=/ip4/138.201.68.74/tcp/4001/ipfs/QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR -p=/ip4/138.201.67.220/tcp/4001/ipfs/QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i"
+
+  ./bin/ipget $IPGET_PARAMS -o "$dest" "$cid"
+}
+
+fetch_gateway() {
+  local dest="$1"
+  local cid="$2"
+
+  local url="https://198.211.99.118/ipfs/$cid"
+
+  download "$url" "$dest"
+}
+
 OUT_DIR="/var/tmp/filecoin-proof-parameters"
 PARAMS="build/proof-params/parameters.json"
 
@@ -20,5 +89,6 @@ jq '. | to_entries | map("'$OUT_DIR'/\(.key) \(.value.cid) \(.value.digest)") |
 			fi
 		fi
 		echo "downloading $dest"
-		./bin/ipget $IPGET_PARAMS -o "$dest" "$cid"
+
+		fetch_gateway "$dest" "$cid"
 	done