view contrib/dockerlib.sh @ 25185:bf6b476f3b36

treemanifest: cache directory logs and manifests

Since manifests instances are cached on the manifest log instance, we
can cache directory manifests by caching the directory manifest
logs. The directory manifest log cache is a plain dict, so it never
expires; we assume that we can keep all the directories in memory.

The cache is kept on the root manifestlog, so access to directory
manifest logs now has to go through the root manifest log.

The caching will soon not be only an optimization. When we start
lazily loading directory manifests, we need to make sure we don't
create multiple instances of the log objects. The caching takes care
of that problem.

#!/bin/sh -eu

# This function exists to set up the DOCKER variable and verify that
# it's the binary we expect. It also verifies that the docker service
# is running on the system and we can talk to it.
function checkdocker() {
  if which docker.io >> /dev/null 2>&1 ; then
    DOCKER=docker.io
  elif which docker >> /dev/null 2>&1 ; then
    DOCKER=docker
  else
    echo "Error: docker must be installed"
    exit 1
  fi

  $DOCKER -h 2> /dev/null | grep -q Jansens && { echo "Error: $DOCKER is the Docking System Tray - install docker.io instead"; exit 1; }
  $DOCKER version | grep -q "^Client version:" || { echo "Error: unexpected output from \"$DOCKER version\""; exit 1; }
  $DOCKER version | grep -q "^Server version:" || { echo "Error: could not get docker server version - check it is running and your permissions"; exit 1; }
}

# Construct a container and leave its name in $CONTAINER for future use.
function initcontainer() {
  [ "$1" ] || { echo "Error: platform name must be specified"; exit 1; }

  DFILE="$ROOTDIR/contrib/docker/$1"
  [ -f "$DFILE" ] || { echo "Error: docker file $DFILE not found"; exit 1; }

  CONTAINER="hg-dockerrpm-$1"
  DBUILDUSER=build
  (
    cat $DFILE
    if [ $(uname) = "Darwin" ] ; then
        # The builder is using boot2docker on OS X, so we're going to
        # *guess* the uid of the user inside the VM that is actually
        # running docker. This is *very likely* to fail at some point.
        echo RUN useradd $DBUILDUSER -u 1000
    else
        echo RUN groupadd $DBUILDUSER -g `id -g`
        echo RUN useradd $DBUILDUSER -u `id -u` -g $DBUILDUSER
    fi
  ) | $DOCKER build --tag $CONTAINER -
}