prepare 7.0.0 release (#315)

## [7.0.0] - 2023-10-16
The latest version of this SDK supports the ability to manage migrations
or modernizations, using migration flags. You might use this
functionality if you are optimizing queries, upgrading to new tech
stacks, migrating from one database to another, or other similar
technology changes. Migration flags are part of LaunchDarkly's Early
Access Program. This feature is available to all LaunchDarkly customers
but may undergo additional changes before it is finalized.

For detailed information about this version, refer to the list below.
For information on how to upgrade from the previous version, read the
[migration
guide](https://docs.launchdarkly.com/sdk/server-side/java/migration-6-to-7).

### Added:
- A new `Migration` type which provides an out-of-the-box configurable
migration framework.
- For more advanced use cases, added new `migrationVariation` and
`trackMigration` methods on LDClient.

### Removed:
- Remove support for `LDUser` in `LDClient` methods. The
`LDContext.fromUser` method can be used to convert an `LDUser` to an
`LDContext`. In a future version it may be removed.

---------

Co-authored-by: Eli Bishop <eli@launchdarkly.com>
Co-authored-by: LaunchDarklyReleaseBot <launchdarklyreleasebot@launchdarkly.com>
Co-authored-by: Alex Engelberg <aengelberg@launchdarkly.com>
Co-authored-by: Anton Mostovoy <anton@mostovoy.net>
Co-authored-by: LaunchDarklyCI <dev@launchdarkly.com>
Co-authored-by: LaunchDarklyCI <LaunchDarklyCI@users.noreply.github.com>
Co-authored-by: Gavin Whelan <gwhelan@launchdarkly.com>
Co-authored-by: ssrm <ssrm@users.noreply.github.com>
Co-authored-by: Harpo Roeder <hroeder@launchdarkly.com>
Co-authored-by: Ben Woskow <48036130+bwoskow-ld@users.noreply.github.com>
Co-authored-by: Elliot <35050275+Apache-HB@users.noreply.github.com>
Co-authored-by: Robert J. Neal <rneal@launchdarkly.com>
Co-authored-by: Robert J. Neal <robertjneal@users.noreply.github.com>
Co-authored-by: Sam Stokes <sstokes@launchdarkly.com>
Co-authored-by: Ember Stevens <ember.stevens@launchdarkly.com>
Co-authored-by: ember-stevens <79482775+ember-stevens@users.noreply.github.com>
Co-authored-by: Alex Engelberg <alex.benjamin.engelberg@gmail.com>
Co-authored-by: Louis Chan <lchan@launchdarkly.com>
Co-authored-by: Louis Chan <91093020+louis-launchdarkly@users.noreply.github.com>
Co-authored-by: Todd Anderson <tanderson@launchdarkly.com>
Co-authored-by: tanderson-ld <127344469+tanderson-ld@users.noreply.github.com>
Co-authored-by: Matthew M. Keeler <mkeeler@launchdarkly.com>
Co-authored-by: ld-repository-standards[bot] <113625520+ld-repository-standards[bot]@users.noreply.github.com>
Co-authored-by: Kane Parkinson <93555788+kparkinson-ld@users.noreply.github.com>
Co-authored-by: Ryan Lamb <4955475+kinyoklion@users.noreply.github.com>

Author: 20 people

.circleci/config.yml

@@ -120,16 +120,23 @@ jobs:
       - checkout
       - run:
           name: uninstall previous openjdk
-          command: choco uninstall openjdk
+          command: choco uninstall openjdk -y
       - run:
           name: install OpenJDK
           command: |
             $ProgressPreference = "SilentlyContinue"  # prevents console errors from CircleCI host
-            choco install openjdk --version <<parameters.openjdk-version>> --allow-downgrade
-      - run: java -version
+            choco install openjdk --version <<parameters.openjdk-version>> --allow-downgrade -y
+      - run:
+          name: Check java version
+          command: |
+            Import-Module $env:ChocolateyInstall\helpers\chocolateyProfile.psm1
+            refreshenv
+            java -version
       - run:
           name: build and test
           command: |
+            Import-Module $env:ChocolateyInstall\helpers\chocolateyProfile.psm1
+            refreshenv
             cp gradle.properties.example gradle.properties
             .\gradlew.bat --no-daemon test  # must use --no-daemon because CircleCI in Windows will hang if there's a daemon running
       - run:

.ldrelease/config.yml

@@ -18,7 +18,8 @@ jobs:
 
 branches:
   - name: main
-    description: 6.x
+    description: 7.x
+  - name: 6.x
   - name: 5.x
   - name: 4.x
 

build.gradle

@@ -73,13 +73,14 @@ ext.versions = [
     "guava": "32.0.1-jre",
     "jackson": "2.11.2", 
     "launchdarklyJavaSdkCommon": "2.0.0",
-    "launchdarklyJavaSdkInternal": "1.1.1",
+    "launchdarklyJavaSdkInternal": "1.2.0",
     "launchdarklyLogging": "1.1.0",
     "okhttp": "4.9.3", // specify this for the SDK build instead of relying on the transitive dependency from okhttp-eventsource
     "okhttpEventsource": "4.1.0",
     "slf4j": "1.7.21",
     "snakeyaml": "2.0",
-    "jedis": "2.9.0"
+    "jedis": "2.9.0",
+    "annotations": "13" // also included transitively with okhttp
 ]
 
 // Add dependencies to "libraries.internal" that we use internally but do not necessarily
@@ -121,6 +122,7 @@ libraries.internal = [
     "com.squareup.okhttp3:okhttp:${versions.okhttp}",
     "com.launchdarkly:okhttp-eventsource:${versions.okhttpEventsource}",
     "org.yaml:snakeyaml:${versions.snakeyaml}",
+    "org.jetbrains:annotations:${versions.annotations}"
 ]
 
 // Add dependencies to "libraries.optional" that are not exposed in our public API and are
@@ -488,7 +490,6 @@ jacocoTestCoverageVerification {
             "EvaluatorOperators.ComparisonOp.test(int)": 1,
             "EvaluatorOperators.apply(com.launchdarkly.sdk.server.DataModel.Operator, com.launchdarkly.sdk.LDValue, com.launchdarkly.sdk.LDValue, com.launchdarkly.sdk.server.EvaluatorPreprocessing.ClauseExtra.ValueExtra)": 1,
             "LDClient.LDClient(java.lang.String)": 2,
-            "LDClient.secureModeHash(com.launchdarkly.sdk.LDUser)": 4,
             "PersistentDataStoreStatusManager.1.run()": 2,
             "PersistentDataStoreWrapper.PersistentDataStoreWrapper(com.launchdarkly.sdk.server.interfaces.PersistentDataStore, java.time.Duration, com.launchdarkly.sdk.server.integrations.PersistentDataStoreBuilder.StaleValuesPolicy, boolean, com.launchdarkly.sdk.server.interfaces.DataStoreUpdates, java.util.concurrent.ScheduledExecutorService)": 2,
             "PersistentDataStoreWrapper.getAll(com.launchdarkly.sdk.server.interfaces.DataStoreTypes.DataKind)": 3,

contract-tests/gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

contract-tests/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"