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-rw-r--r--.gitreview4
-rw-r--r--README.md3
m---------chameleon5
-rw-r--r--dev/dev.clj28
-rw-r--r--dev/user.clj7
-rw-r--r--devops/chameleon-config.edn10
-rw-r--r--devops/chameleon.service13
-rw-r--r--devops/chameleon/Dockerfile45
-rw-r--r--devops/chameleon/build-chameleon2
-rw-r--r--devops/chameleon/docker-entrypoint.sh5
-rw-r--r--devops/docker-compose.yml16
-rw-r--r--devops/install-service6
-rw-r--r--devops/nginx/Dockerfile9
-rw-r--r--devops/nginx/default.conf23
-rw-r--r--devops/nginx/nginx.conf33
-rw-r--r--prod/chameleon/server.clj18
-rw-r--r--project.clj31
-rw-r--r--src/chameleon/aai_processor.clj26
-rw-r--r--src/chameleon/config.clj18
-rw-r--r--src/chameleon/event.clj18
-rw-r--r--src/chameleon/handler.clj61
-rw-r--r--src/chameleon/http_server.clj9
-rw-r--r--src/chameleon/route.clj71
-rw-r--r--src/chameleon/txform.clj19
24 files changed, 480 insertions, 0 deletions
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..8fd4a05
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,4 @@
+[gerrit]
+host=gerrit.openecomp.org
+port=29418
+project=chameleon.git
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0895c05
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# chameleon
+
+Feeds the Gallifrey time database with entity events
diff --git a/chameleon b/chameleon
new file mode 160000
+Subproject 2610df2fc29a9d16bb869f652d4d21caeae4c15
diff --git a/dev/dev.clj b/dev/dev.clj
new file mode 100644
index 0000000..880f540
--- /dev/null
+++ b/dev/dev.clj
@@ -0,0 +1,28 @@
+(ns dev
+ "Tools for interactive development with the REPL. This file should
+ not be included in a production build of the application."
+ (:require [chameleon.config :refer [config]]
+ [chameleon.handler :refer [handler]]
+ [integrant.core :as ig]
+ [integrant.repl :refer [clear go halt init reset reset-all]]
+ [integrant.repl.state :refer [system]]
+ [clojure.tools.namespace.repl :refer [refresh refresh-all disable-reload!]]
+ [clojure.repl :refer [apropos dir doc find-doc pst source]]
+ [clojure.test :refer [run-tests run-all-tests]]
+ [clojure.pprint :refer [pprint]]
+ [clojure.reflect :refer [reflect]]))
+
+(disable-reload! (find-ns 'integrant.core))
+
+(integrant.repl/set-prep! (constantly (config {
+ :event-config {:aai {:host "localhost:3904"
+ :topic "spikeEvents"
+ :motsid ""
+ :pass ""
+ :consumer-group"chameleon1"
+ :consumer-id"chameleon1"
+ :timeout 15000
+ :batch-size 8
+ :type "HTTPAUTH"}}
+ :gallifrey-host "localhost:443"
+ :http-port 3449})))
diff --git a/dev/user.clj b/dev/user.clj
new file mode 100644
index 0000000..9a2f701
--- /dev/null
+++ b/dev/user.clj
@@ -0,0 +1,7 @@
+(ns user)
+
+(defn dev
+ "Load and switch to the 'dev' namespace."
+ []
+ (require 'dev)
+ (in-ns 'dev))
diff --git a/devops/chameleon-config.edn b/devops/chameleon-config.edn
new file mode 100644
index 0000000..32e830e
--- /dev/null
+++ b/devops/chameleon-config.edn
@@ -0,0 +1,10 @@
+{:event-config {:host "localhost:3904"
+ :topic "spikeEvents"
+ :motsid ""
+ :pass ""
+ :consumer-group "chameleon"
+ :consumer-id "chameleon"
+ :timeout 15000
+ :batch-size 8
+ :type "HTTPAUTH"}
+ :gallifrey-host "localhost:443"}
diff --git a/devops/chameleon.service b/devops/chameleon.service
new file mode 100644
index 0000000..0c4b937
--- /dev/null
+++ b/devops/chameleon.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=Chameleon container
+After=docker.socket early-docker.target network.target network-online.target
+Wants=network-online.target
+BindsTo=docker.service
+
+[Service]
+Restart=always
+ExecStart=/usr/bin/docker-compose -f /opt/chameleon/docker-compose.yml -p chameleon up
+ExecStop=/usr/bin/docker-compose -f /opt/chameleon/docker-compose.yml -p chameleon down
+
+[Install]
+WantedBy=multi-user.target
diff --git a/devops/chameleon/Dockerfile b/devops/chameleon/Dockerfile
new file mode 100644
index 0000000..97e9c3b
--- /dev/null
+++ b/devops/chameleon/Dockerfile
@@ -0,0 +1,45 @@
+FROM alpine:3.6
+
+# Java Version
+ENV JAVA_VERSION_MAJOR 8
+ENV JAVA_VERSION_MINOR 131
+ENV JAVA_VERSION_BUILD 11
+ENV JAVA_PACKAGE jre
+ENV GLIBC_VERSION 2.25-r0
+
+ENV JAVA_8_BASE_URL http://download.oracle.com/otn-pub/java/jdk/${JAVA_VERSION_MAJOR}u${JAVA_VERSION_MINOR}-b${JAVA_VERSION_BUILD}/d54c1d3a095b4ff2b6607d096fa80163/${JAVA_PACKAGE}-${JAVA_VERSION_MAJOR}u${JAVA_VERSION_MINOR}
+
+RUN apk update
+RUN apk add curl
+
+# Install glibc (required for java)
+RUN curl -jsSL -o /etc/apk/keys/sgerrand.rsa.pub https://raw.githubusercontent.com/sgerrand/alpine-pkg-glibc/master/sgerrand.rsa.pub && \
+ curl -jsSL -O https://github.com/sgerrand/alpine-pkg-glibc/releases/download/${GLIBC_VERSION}/glibc-${GLIBC_VERSION}.apk && \
+ apk add glibc-${GLIBC_VERSION}.apk && \
+ rm -f glibc-${GLIBC_VERSION}.apk
+
+# Install Java
+RUN mkdir /opt && \
+ curl -jsSL -H "Cookie: oraclelicense=accept-securebackup-cookie" ${JAVA_8_BASE_URL}-linux-x64.tar.gz | tar -xzf - -C /opt && \
+ ln -s /opt/${JAVA_PACKAGE}1.${JAVA_VERSION_MAJOR}.0_${JAVA_VERSION_MINOR} /opt/${JAVA_PACKAGE} && \
+ cd /opt/${JAVA_PACKAGE}/ && rm -rf *src.zip lib/missioncontrol lib/visualvm lib/plugin.jar plugin lib/*javafx* lib/*jfx* lib/ext/jfxrt.jar bin/javaws lib/javaws.jar lib/desktop lib/deploy* lib/amd64/libdecora_sse.so lib/amd64/libprism_*.so lib/amd64/libfxplugins.so lib/amd64/libglass.so lib/amd64/libgstreamer-lite.so lib/amd64/libjavafx*.so lib/amd64/libjfx*.
+
+# Install Java Cryptography Extension (JCE) Unlimited Strength
+RUN curl -jksSLH "Cookie: oraclelicense=accept-securebackup-cookie" -o /tmp/jce_policy.zip \
+ http://download.oracle.com/otn-pub/java/jce/${JAVA_VERSION_MAJOR}/jce_policy-${JAVA_VERSION_MAJOR}.zip && \
+ unzip -o -d /opt/${JAVA_PACKAGE}/lib/security /tmp/jce_policy.zip && rm -f /tmp/jce_policy.zip
+
+RUN apk del curl
+
+ENV PATH /opt/jre/bin:${PATH}
+
+RUN apk add zip openssh-keygen openssh-client
+
+EXPOSE 80
+
+RUN mkdir -p /opt/chameleon
+COPY chameleon.jar /opt/chameleon
+
+COPY ./docker-entrypoint.sh /
+RUN chmod 700 /docker-entrypoint.sh
+ENTRYPOINT ["/docker-entrypoint.sh"]
diff --git a/devops/chameleon/build-chameleon b/devops/chameleon/build-chameleon
new file mode 100644
index 0000000..4421407
--- /dev/null
+++ b/devops/chameleon/build-chameleon
@@ -0,0 +1,2 @@
+lein uberjar
+cp -f ../../target/chameleon.jar .
diff --git a/devops/chameleon/docker-entrypoint.sh b/devops/chameleon/docker-entrypoint.sh
new file mode 100644
index 0000000..4a0b529
--- /dev/null
+++ b/devops/chameleon/docker-entrypoint.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+set -e
+
+java -jar /opt/chameleon/chameleon.jar
diff --git a/devops/docker-compose.yml b/devops/docker-compose.yml
new file mode 100644
index 0000000..b17a98b
--- /dev/null
+++ b/devops/docker-compose.yml
@@ -0,0 +1,16 @@
+chameleon:
+ build: ./chameleon
+ container_name: chameleon
+ environment:
+ - CONFIG_LOCATION=/opt/chameleon/chameleon-config.edn
+ volumes:
+ - ./chameleon-config.edn:/opt/chameleon/chameleon-config.edn
+
+nginx:
+ build: ./nginx
+ container_name: nginx
+ links:
+ - chameleon
+ ports:
+ - 80:80
+ - 443:443
diff --git a/devops/install-service b/devops/install-service
new file mode 100644
index 0000000..a54b884
--- /dev/null
+++ b/devops/install-service
@@ -0,0 +1,6 @@
+sudo cp chameleon.service /etc/systemd/system
+sudo chown root:root /etc/systemd/system/chameleon.service
+sudo chmod 644 /etc/systemd/system/chameleon.service
+
+sudo systemctl enable chameleon
+sudo systemctl daemon-reload
diff --git a/devops/nginx/Dockerfile b/devops/nginx/Dockerfile
new file mode 100644
index 0000000..4f2ba9f
--- /dev/null
+++ b/devops/nginx/Dockerfile
@@ -0,0 +1,9 @@
+FROM nginx:alpine
+
+COPY ssl-cert-snakeoil.pem /etc/ssl/certs/
+COPY ssl-cert-snakeoil.key /etc/ssl/private/
+RUN chown -R nginx:nginx /etc/ssl
+RUN chmod 640 /etc/ssl/private/ssl-cert-snakeoil.key
+RUN chmod 750 /etc/ssl/private
+
+COPY default.conf /etc/nginx/conf.d/
diff --git a/devops/nginx/default.conf b/devops/nginx/default.conf
new file mode 100644
index 0000000..541f5db
--- /dev/null
+++ b/devops/nginx/default.conf
@@ -0,0 +1,23 @@
+
+server {
+# Listen on 80 and 443
+listen 80;
+listen 443 ssl;
+# Self-signed certificate.
+ssl_certificate /etc/ssl/certs/ssl-cert-snakeoil.pem;
+ssl_certificate_key /etc/ssl/private/ssl-cert-snakeoil.key;
+
+# Redirect all non-SSL traffic to SSL.
+if ($ssl_protocol = "") {
+rewrite ^ https://$host$request_uri? permanent;
+}
+
+# Split off traffic to chameleon, and make sure that websockets
+# are managed correctly.
+location / {
+proxy_pass http://chameleon:8082;
+proxy_http_version 1.1;
+proxy_set_header Upgrade websocket;
+proxy_set_header Connection upgrade;
+}
+}
diff --git a/devops/nginx/nginx.conf b/devops/nginx/nginx.conf
new file mode 100644
index 0000000..3ebc618
--- /dev/null
+++ b/devops/nginx/nginx.conf
@@ -0,0 +1,33 @@
+
+user nginx;
+worker_processes 1;
+
+error_log /var/log/nginx/error.log warn;
+pid /var/run/nginx.pid;
+
+
+events {
+ worker_connections 1024;
+}
+
+
+http {
+ include /etc/nginx/mime.types;
+ default_type application/octet-stream;
+
+ log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+ '$status $body_bytes_sent "$http_referer" '
+ '"$http_user_agent" "$http_x_forwarded_for"';
+
+ access_log /var/log/nginx/access.log main;
+
+ sendfile on;
+ #tcp_nopush on;
+
+ keepalive_timeout 65;
+
+ #gzip on;
+
+ include /etc/nginx/conf.d/*.conf;
+ include /etc/nginx/sites-available/*.conf;
+}
diff --git a/prod/chameleon/server.clj b/prod/chameleon/server.clj
new file mode 100644
index 0000000..b9b38db
--- /dev/null
+++ b/prod/chameleon/server.clj
@@ -0,0 +1,18 @@
+(ns chameleon.server
+ (:require [chameleon.config :refer [config]]
+ [chameleon.handler :refer [handler]]
+ [config.core :refer [env]]
+ [org.httpkit.server :refer [run-server]]
+ [integrant.core :as ig])
+ (:gen-class))
+
+(defn -main [& args]
+ (let [port (Integer/parseInt (or (env :http-port) "8082"))
+ system-config (read-string (slurp (System/getenv "CONFIG_LOCATION" )))
+ event-config (:event-config system-config)
+ route-config (:gallifrey-host system-config)]
+ (println "Listening on port" port)
+ (ig/init (config {
+ :event-config event-config
+ :gallifrey-host route-config
+ :http-port port}))))
diff --git a/project.clj b/project.clj
new file mode 100644
index 0000000..aaab854
--- /dev/null
+++ b/project.clj
@@ -0,0 +1,31 @@
+(defproject chameleon "0.1.0"
+ :dependencies [[org.clojure/clojure "1.8.0"]
+ [com.7theta/utilis "1.0.4"]
+ [http-kit "2.2.0"]
+ [ring/ring-core "1.6.3"]
+ [ring/ring-defaults "0.3.1"]
+ [ring/ring-anti-forgery "1.1.0"]
+ [compojure "1.6.0"]
+ [liberator "0.15.1"]
+ [cheshire "5.7.1"]
+ [inflections "0.13.0"]
+ [clj-time "0.14.2"]
+ [integrant "0.6.2"]
+ [clojure-future-spec "1.9.0-beta4"]
+ [yogthos/config "0.9"]
+ [org.onap.aai.event-client/event-client-dmaap "1.2.0"]
+ ]
+ :repositories [["onap-releases" {:url "https://nexus.onap.org/content/repositories/releases/"}]
+ ["onap-public" {:url "https://nexus.onap.org/content/repositories/public/"}]
+ ["onap-staging" {:url "https://nexus.onap.org/content/repositories/staging/"}]
+ ["onap-snapshot" {:url "https://nexus.onap.org/content/repositories/snapshots/"}]
+ ]
+ :min-lein-version "2.5.3"
+ :profiles {:dev {:source-paths ["dev"]
+ :dependencies [[ring/ring-devel "1.6.3"]
+ [integrant/repl "0.2.0"]]}
+ :uberjar {:source-paths ["prod"]
+ :main chameleon.server
+ :aot [chameleon.server]
+ :uberjar-name "chameleon.jar"}}
+ :prep-tasks [ "compile"])
diff --git a/src/chameleon/aai_processor.clj b/src/chameleon/aai_processor.clj
new file mode 100644
index 0000000..c709ed1
--- /dev/null
+++ b/src/chameleon/aai_processor.clj
@@ -0,0 +1,26 @@
+(ns chameleon.aai-processor
+ (:require [chameleon.txform :refer :all]
+ [chameleon.route :refer :all]
+ [cheshire.core :refer :all]))
+
+(defn from-gallifrey
+ "Transforms Gallifrey response payloads into a format consumable by AAI-centric clients"
+ [body]
+ (->> body
+ (map (fn [[k v]] [(clojure.string/split k #"\.") v]))
+ ((fn [x] (reduce #(assoc-in %1 (first %2) (second %2) ) {} x)))))
+
+(defn from-spike
+ "Transforms Spike-based event payloads to a format accepted by Gallifrey for vertices and relationships"
+ [gallifrey-host payload]
+ (let [txpayload (map-keywords (parse-string payload))
+ operation (:operation txpayload)
+ entity-type (if (contains? txpayload :vertex)
+ :vertex
+ :relationship)
+ entity (map-keywords (entity-type txpayload))
+ key (:key entity)
+ properties (assoc (:properties entity) :type (:type entity))]
+ (assert-gallifrey gallifrey-host "aai" (if (= entity-type :vertex)
+ {:meta {:key key :operation operation} :body (generate-string properties)}
+ {:meta {:key key :operation operation} :body (generate-string (conj properties (flatten-entry entity :source) (flatten-entry entity :target)))}))))
diff --git a/src/chameleon/config.clj b/src/chameleon/config.clj
new file mode 100644
index 0000000..4982f4a
--- /dev/null
+++ b/src/chameleon/config.clj
@@ -0,0 +1,18 @@
+(ns chameleon.config
+ (:require [integrant.core :as ig]
+ [chameleon.aai-processor :refer :all]))
+
+(defn config
+ [app-config]
+ (let [conf {
+ :chameleon/event
+ {:event-config (assoc-in (:event-config app-config)
+ [:aai :processor] from-spike)
+ :gallifrey-host (:gallifrey-host app-config)}
+ :chameleon/handler
+ {:gallifrey-host (:gallifrey-host app-config)}
+ :chameleon/http-server
+ {:port (:http-port app-config)
+ :handler (ig/ref :chameleon/handler)}}]
+ (ig/load-namespaces conf)
+ conf))
diff --git a/src/chameleon/event.clj b/src/chameleon/event.clj
new file mode 100644
index 0000000..8201acb
--- /dev/null
+++ b/src/chameleon/event.clj
@@ -0,0 +1,18 @@
+(ns chameleon.event
+ (:require [chameleon.txform]
+ [chameleon.route]
+ [integrant.core :as ig])
+ (:import [org.onap.aai.event.client DMaaPEventConsumer]))
+
+(defmethod ig/init-key :chameleon/event
+ [_ {:keys [event-config gallifrey-host]}]
+ (let [{:keys [host topic motsid pass consumer-group consumer-id timeout batch-size type processor]} (:aai event-config)
+ event-processor (DMaaPEventConsumer. host topic motsid pass consumer-group consumer-id timeout batch-size type)]
+ (println "Event processor for AAI created. Starting event polling on " host topic)
+ (.start (Thread. (fn [] (while true
+ (let [it (.iterator (.consume event-processor))]
+ (println "Polling...")
+ (while (.hasNext it)
+ (let [event (.next it)]
+ (processor gallifrey-host event))))))))
+ ))
diff --git a/src/chameleon/handler.clj b/src/chameleon/handler.clj
new file mode 100644
index 0000000..7a4a5fe
--- /dev/null
+++ b/src/chameleon/handler.clj
@@ -0,0 +1,61 @@
+(ns chameleon.handler
+ (:require [chameleon.route :as c-route]
+ [chameleon.aai-processor]
+ [utilis.map :refer [map-vals compact]]
+ [liberator.core :refer [defresource]]
+ [compojure.core :refer [GET PUT PATCH ANY defroutes]]
+ [compojure.route :refer [resources]]
+ [ring.util.response :refer [resource-response content-type]]
+ [ring.middleware.defaults :refer [wrap-defaults api-defaults]]
+ [ring.middleware.anti-forgery :refer [wrap-anti-forgery]]
+ [ring.middleware.session :refer [wrap-session]]
+ [cheshire.core :as json]
+ [clj-time.format :as tf]
+ [integrant.core :as ig]))
+
+(declare handler)
+
+(defonce ^:private g-host (atom nil))
+
+(defmethod ig/init-key :chameleon/handler [_ {:keys [gallifrey-host]}]
+ (reset! g-host gallifrey-host)
+ handler)
+
+(defmethod ig/halt-key! :chameleon/handler [_ _]
+ (reset! g-host nil))
+
+(declare serialize de-serialize)
+
+(defresource entity-endpoint [id]
+ :allowed-methods [:get]
+ :available-media-types ["application/json"]
+ :exists? (fn [ctx]
+ (let [resource (-> (c-route/query @g-host id (-> ctx :request :params :t-k)))]
+ (when (= (:status resource) 200)
+ {::resource (-> resource :body json/parse-string (dissoc "_meta") (chameleon.aai-processor/from-gallifrey))})))
+ :existed? (fn [ctx]
+ (when-let [status (-> (c-route/query @g-host id (-> ctx :request :params :t-k)) :status)]
+ (= status 410)))
+ :handle-ok ::resource)
+
+(defroutes app-routes
+ (GET "/entity/:id" [id] (entity-endpoint id))
+ (resources "/"))
+
+(def handler
+ (-> app-routes
+ (wrap-defaults api-defaults)))
+
+
+;;; Implementation
+
+(defn- serialize
+ [e]
+ (compact
+ (update e :_meta #(map-vals
+ (fn [m]
+ (map-vals str m)) %))))
+
+(defn- de-serialize
+ [e]
+ e)
diff --git a/src/chameleon/http_server.clj b/src/chameleon/http_server.clj
new file mode 100644
index 0000000..cf8ae07
--- /dev/null
+++ b/src/chameleon/http_server.clj
@@ -0,0 +1,9 @@
+(ns chameleon.http-server
+ (:require [org.httpkit.server :refer [run-server]]
+ [integrant.core :as ig]))
+
+(defmethod ig/init-key :chameleon/http-server [_ {:keys [port handler]}]
+ (run-server handler {:port port}))
+
+(defmethod ig/halt-key! :chameleon/http-server [_ server]
+ (server :timeout 100))
diff --git a/src/chameleon/route.clj b/src/chameleon/route.clj
new file mode 100644
index 0000000..2b30f42
--- /dev/null
+++ b/src/chameleon/route.clj
@@ -0,0 +1,71 @@
+(ns chameleon.route
+ (:require [org.httpkit.client :as kitclient]))
+
+(defn- interpret-response
+ "Print out the response from the Gallifrey server"
+ [key response]
+ (let [{:keys [status body]}@response]
+ (println "Response for request with key " key " resulted in status " status
+ " with body " body )))
+
+(defn query
+ "Retrieve an entity referenced by id at the provided host. Optionally provide
+ a time 't-k' that defines a query based on when the system knew about the
+ state of the entity."
+ [host key & [k]]
+ @(kitclient/request {
+ :url (str "https://" host "/entity/" key)
+ :method :get
+ :query-params (if-let [t-k k] {"t-k" t-k})
+ :insecure? true
+ :keepalive 300
+ :timeout 1000}))
+
+(defn assert-create
+ "Creates an entity in Gallifrey with an initial set of assertions coming from the provided payload"
+ [host actor key payload]
+ (print "Final: " payload)
+ (kitclient/request {
+ :url (str "https://" host "/entity/" key)
+ :method :put
+ :query-params {"actor" actor "create" "true"}
+ :body payload
+ :insecure? true
+ :keepalive 300
+ :timeout 1000}))
+
+(defn assert-update
+ "Update an entity in Gallifrey with a set of assertions coming from the provided payload"
+ [host actor key payload]
+ (kitclient/request {
+ :url (str "https://" host "/entity/" key)
+ :method :put
+ :query-params {"actor" actor "changes-only" "true"}
+ :body payload
+ :insecure? true
+ :keepalive 300
+ :timeout 1000}))
+
+(defn assert-delete
+ "Assert a deletion for an entity in Gallifrey based on the provided key."
+ [host actor key]
+ (kitclient/request {
+ :url (str "https://" host "/entity/" key)
+ :method :delete
+ :query-params {"actor" actor}
+ :insecure? true
+ :keepalive 300
+ :timeout 1000}))
+
+(defn assert-gallifrey [host actor payload]
+ "Propagates an assertion to Gallifrey based off of an event payload coming in from the event service."
+ (let [{:keys [meta body]} payload
+ {:keys [key operation]} meta]
+ (println operation " entity with key " key)
+ (interpret-response key (case operation
+ "CREATE"
+ (assert-create host actor key body)
+ "UPDATE"
+ (assert-update host actor key body)
+ "DELETE"
+ (assert-delete host actor key)))))
diff --git a/src/chameleon/txform.clj b/src/chameleon/txform.clj
new file mode 100644
index 0000000..95f357f
--- /dev/null
+++ b/src/chameleon/txform.clj
@@ -0,0 +1,19 @@
+(ns chameleon.txform
+ (:require [cheshire.core :refer :all]
+ [clojure.string :as str]))
+
+(defn map-keywords
+ "Maps all string based keys to keywords"
+ [kmap]
+ (into {} (for [[key value] kmap] [(keyword key) value])))
+
+(defn flatten-key
+ "Maps a parent-child pair to a period separated keyword"
+ [parent child]
+ (keyword (str (name parent) "." (name child))))
+
+(defn flatten-entry
+ "Flattens a nested map entry to a period separated keyword entry"
+ [map key]
+ (reduce #(assoc %1 (flatten-key key (first %2)) (second %2))
+ {} (seq (key map))))