Merge pull request #20 from LimaoC/deploy-script

Deploy script

README.md

@@ -70,6 +70,21 @@ To run a specific test, say `test_dummy.py`, use
 poetry run pytest tests/test_dummy.py
 ```
 
+## Deployment
+To deploy a build to the Raspberry Pi use the `deploy.sh` script. This script will create a tarball of file listed in a text file, transfer it to
+a specified hostname and untar it there.
+
+To use the script execute it in the project's root directory with,
+```bash
+./deploy.sh [pathfile] [username]@[hostname]
+```
+For example, to deploy the files listed in `deploypaths.txt` to `testpi` (using username raspberry) the command would be
+```bash
+./deploy.sh deploypaths.txt raspberry@testpi
+```
+The pathname file should contain a path to a file or directory on each line. If a directory is listed `deploy.sh` will copy the entire contents over.
+You can use the `#` character at the start of a line to leave comments.
+
 ## Code Styling
 
 We use [black](https://black.readthedocs.io/en/stable/) for automated code formatting. To run Black, run this command from the root of the repo:

deploy.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+
+WARN="[\033[1;33mWARN\033[0m]"
+INFO="[\033[1;32mINFO\033[0m]"
+ERROR="[\033[1;31mERROR\033[0m]"
+
+PATHFILE=$1
+TEMPDIRPATH='package_temp'
+
+[ -d $TEMPDIRPATH ]
+TEMPDIRCHECK=$?
+
+# Make temp dir if it doesn't exist
+if [ $TEMPDIRCHECK == 1 ]; then
+	mkdir $TEMPDIRPATH
+else
+	echo -e "$INFO Temp directory was pre-existing. I promise not to delete it."
+fi
+
+cleanup () {
+	# Do not delete the temp dir if it was pre-existing
+	echo -e "$INFO Cleaning up"
+	if [ $TEMPDIRCHECK == 1 ]; then
+		rm -r $TEMPDIRPATH
+	fi
+}
+
+BUILDPATH="${TEMPDIRPATH}/build"
+mkdir $BUILDPATH
+
+echo -e "$INFO Copying Files"
+
+while read path; do
+	if [[ $path == \#* ]]; then
+		true
+	elif [ -d $path ]; then
+	#path is a directory
+		cp -r --parents $path $BUILDPATH 			
+	elif [ -e $path ]; then
+	#path is just a file
+		cp --parents $path ${BUILDPATH}
+	else
+		echo -e "${WARN}: $path not found"
+	fi
+done <$PATHFILE
+
+# Hashing directory line from https://stackoverflow.com/questions/545387/linux-compute-a-single-hash-for-a-given-folder-contents
+HASH=$( find ${BUILDPATH} -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum )
+TARNAME="build-${HASH:0:8}.tar" # Truncate the hash for a nicer file names
+
+# Create tarball
+echo -e "$INFO Creating Tarball"
+if ! tar cf $TARNAME -C $TEMPDIRPATH "./build"; then
+	echo -e "$ERROR Tarball creation failed"
+	cleanup
+	exit 1
+fi
+
+SSHTARGET=$2
+# Check if we can find target
+if ! nc -z $SSHTARGET 22 2>/dev/null; then
+	echo -e "$ERROR Host unreachable";
+	cleanup
+	exit 1
+fi
+
+echo -e "$INFO Copying Tarball - destination's password may be needed"
+if ! scp -q $TARNAME $SSHTARGET:~/; then
+       echo -e "$ERROR Copy unsuccessful"
+       cleanup
+       exit 1
+fi
+
+echo -e "$INFO Extracting Build - the password may be needed again"
+if ! ssh $SSHTARGET "tar xf $TARNAME; rm $TARNAME"; then
+	echo -e "$ERROR Remote extraction failed"
+	cleanup
+	exit 1
+fi
+
+echo -e "$INFO Deployed Successfully"
+cleanup
+exit 0

deploypaths.txt

@@ -0,0 +1,3 @@
+# Enter paths of files and directories to be bundled and sent to the pi
+# deploy.sh will preserve the source directory layout so imports between files
+# should still work if all files are copied in