Initial commit

4 files changed, 210 insertions, 0 deletions

diff --git a/LICENSE.txt b/LICENSE.txt
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+BSD 3-Clause License
+
+Copyright (c) 2019, Association of Universities for Research in Astronomy (AURA)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
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+# nexus_bash
+
diff --git a/interface.d/nexus_raw.sh b/interface.d/nexus_raw.sh
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+#!/bin/bash
+#
+# Nexus RAW repository interface
+#
+
+
+# Check existence of upstream file or directory
+# @param url: path relative to NEXUS_URL (i.e. "repository/my_data", "repository/my_data/file.txt")
+# @return non-zero indicates failure
+nexus_raw_provides() {
+    local url
+    local response
+
+    url="${NEXUS_URL}/$1"
+    if [[ -z $url ]]; then
+        echo "nexus_raw_provides: requires a path relative to $NEXUS_URL" >&2
+        return 1
+    fi
+
+    response=$(curl -s --head "$url" | head -n 1 | awk '{print $2}')
+    if (( $response != 200 )); then
+        return 1
+    fi
+    return 0
+}
+
+# Download a file
+# @param url:
+# @param filename:
+# @param dest:
+# @return
+#   1: path to file
+#   2: non-zero indicates failure
+nexus_raw_download() {
+    local url
+    local filename
+    local dest
+
+    url="${NEXUS_URL}/$1"
+    if [[ -z $url ]]; then
+        echo "nexus_raw_download: requires a path relative to $NEXUS_URL" >&2
+        return 1
+    fi
+
+    filename=$(basename $url)
+    if ! nexus_raw_provides "$1"; then
+        echo "${url}: not found on remote server" >&2
+        return 1
+    fi
+
+    dest="$2"
+    if [[ -z "${dest}" ]]; then
+        dest="."
+    elif [[ ! -d "${dest}" ]]; then
+        mkdir -p "${dest}"
+    fi
+
+    if ! curl -L "$url" > "${dest}/${filename}"; then
+        echo "Could not download data" >&2
+        return 1
+    fi
+
+    echo "$dest/$filename"
+    return 0
+}
+
+# Upload a file
+# @param url: path relative to NEXUS_URL (i.e. "repository/my_data")
+# @param filename: local file to upload
+# @return non-zero indicates failure
+nexus_raw_upload() {
+    local url
+    local filename
+
+    url="${NEXUS_URL}/$2"
+    filename="$1"
+
+    if [[ -z $url ]]; then
+        echo "nexus_raw_upload: requires a path relative to $NEXUS_URL" >&2
+        return 1
+    fi
+
+    if (( NEXUS_BASH_VERBOSE )); then
+        /bin/echo -n "Uploading '$filename' => '${2}'... "
+    fi
+    if ! curl -s --user "${NEXUS_AUTH}" --upload-file "${filename}" "${url}/${filename}"; then
+        if (( NEXUS_BASH_VERBOSE )); then
+            echo "Failed" >&2
+        fi
+        return 1
+    fi
+
+    if (( NEXUS_BASH_VERBOSE )); then
+        echo "done"
+    fi
+    return 0
+}
+
+# Upload a directory tree
+# @param src: path to local directory
+# @param dest: path relative to NEXUS_URL (i.e. "repository/my_data")
+# @return non-zero indicates failure
+nexus_raw_upload_dir() {
+    local src
+    local dest
+    local status_callback
+    src="$1"
+    dest="$2"
+
+    if [[ ! -d "$src" ]]; then
+        echo "nexus_raw_upload_dir: source directory does not exist: ${src}" >&2
+        return 1
+    fi
+
+    if [[ -z "$dest" ]]; then
+        echo "nexus_raw_upload_dir: requires a destination relative to ${NEXUS_URL}" >&2
+        return 1
+    fi
+
+    local failures
+    local paths
+    paths=($(find "${src}" -type f -print))
+
+    failures=0
+    for (( i=0; i < ${#paths[@]}; i++ )); do
+        local retval
+        local f
+        f="${paths[$i]}"
+
+        if ! nexus_raw_upload "$f" "$dest"; then
+            (( failures++ ))
+        fi
+    done
+
+    if (( failures )); then
+        return 1
+    fi
+    return 0
+}
diff --git a/nexus_bash.sh b/nexus_bash.sh
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+#!/bin/bash
+#
+# Global Variables
+#
+NEXUS_BASH_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+NEXUS_BASH_INTERFACE_ROOT="${NEXUS_BASH_ROOT}/interface.d"
+NEXUS_BASH_VERBOSE=0
+
+#
+# Global Arguments
+#
+# NEXUS_URL: str
+#   HTTP[S] address of the Nexus server
+#   e.g. NEXUS_URL="https://nexus.server.tld"
+#
+NEXUS_URL=${NEXUS_URL:-}
+
+# NEXUS_AUTH: str
+#   Provide user credentials to the Nexus server. Username and password are delimited by ':'
+#   e.g. NEXUS_AUTH="username:password"
+NEXUS_AUTH=${NEXUS_AUTH:-}
+
+#
+# Common Functions
+#
+
+# Check NEXUS_URL is a valid Nexus server
+# @return non-zero indicates failure
+nexus_available() {
+    response=$(curl --head -X GET "$NEXUS_URL/service/rest/v1/status" | head -n 1 | awk '{print $2}')
+    if (( $response != 200 )); then
+        return 1
+    fi
+    return 0
+}
+
+# Populate interfaces
+for iface in $(find "${NEXUS_BASH_INTERFACE_ROOT}" -type f -name '*.sh'); do
+    source "$iface"
+done