* perf: use streaming RPC for PDML

* fix: reset resume token for each tx

* cleanup: remove test code

* fix: retry depening on resume token

* fix: remove unused attempt param

* fix: fix check for resume token

* fix: keep track of total timeout

* fix: clirr build failure

* cleanup: add comments + remove unused code

* tests: add missing exec time

* chore: run formatter

* chore: remove unnecessary null check

* tests: add missing exec time

* feat: support setting compression option

* fix: use correct encoding header

* fix: add project id

* docs: fix typo + missing end tag

* chore: resolve merge conflicts

* tests: fix test failure on emulator

* feat: add async api

* feat: session pool is non-blocking

* tests: fix integration tests that assumed tx was blocking

Some integration tests started transactions without executing a query,
and expected these transactions to fail. However, as the client is
now non-blocking up until the first call to ResultSet#next(), no
exception would occur.

* feat: add read methods support

* tests: test async runner

* feat: create async runner

* tests: centralize some commonly used test objects

* feat: keep session checked out until async finishes

* fix: fix span test cases after rebase

* fix: fix async runner tests

* fix: make async runner wait for async operations

* examples: add example integration test

* examples: add more examples

* tests: fix flaky tests

* rebase: rebase on current master

* fix: run code formatter

* feat: add support for poller

* tests: support more param types

* fix: fix race conditions

* feat: return ApiFuture to monitor end of AsyncResultSet

* feat: add helper method for create test result sets

* feat: add batchUpdateAsync

* fix: add ignored interface differences

* refactor: use future as waiter in SessionPool

* format: run code formatter

* tests: fix test case + remove commented code

* fix: AsyncResultSet should throw Cancelled

* feat: expose DatabaseId.of(String name)

* deps: set version to 1.53 to match bom

* feat: steps to add async support for tx manager

* review: process review comments

* chore: remove unused code

* clirr: add ignored differences to clirr

* fix: call listeners after all rows have been consumed

* feat: towards AsyncTransactionManager

* fix: session leaks + code format

* fix: more session leak fixes

* feat: further work on AsyncTransactionManager

* fix: fix test failures

* fix: fix several race conditions

* tests: increase test timeout

* feat: further towards AsyncTransactionManager

* feat: require executor for transaction functions

* revert: remove async connection api from branch

* chore: run code formatter

* chore: fix flaky test case

* tests: fix ITs for emulator

* fix: SpannerOptions.toBuilder().host should override emulatorHost

* tests: fix potentially hanging test

…cies to v0.8.2 (#315)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-shared-dependencies](https://togithub.com/googleapis/java-shared-dependencies) | patch | `0.8.1` -> `0.8.2` |

---

### Release Notes

<details>
<summary>googleapis/java-shared-dependencies</summary>

### [`v0.8.2`](https://togithub.com/googleapis/java-shared-dependencies/blob/master/CHANGELOG.md#&#8203;082-httpswwwgithubcomgoogleapisjava-shared-dependenciescomparev081v082-2020-07-01)

[Compare Source](https://togithub.com/googleapis/java-shared-dependencies/compare/v0.8.1...v0.8.2)

</details>

---

### Renovate configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#googleapis/java-spanner).

…to v1.57.0 (#312)

* updated versions.txt [ci skip]

* updated samples/pom.xml [ci skip]

* updated samples/snippets/pom.xml [ci skip]

* updated samples/install-without-bom/pom.xml [ci skip]

* updated google-cloud-spanner-bom/pom.xml [ci skip]

* updated google-cloud-spanner/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-v1/pom.xml [ci skip]

* updated pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-v1/pom.xml [ci skip]

* updated samples/snapshot/pom.xml

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: skuruppu <skuruppu@google.com>

🤖 I have created a release \*beep\* \*boop\* 
---
## [1.58.0](https://www.github.com/googleapis/java-spanner/compare/v1.57.0...v1.58.0) (2020-07-07)


### Features

* add async api ([#81](https://www.github.com/googleapis/java-spanner/issues/81)) ([462839b](https://www.github.com/googleapis/java-spanner/commit/462839b625e58e235581b8ba10b398e1d222eaaf))
* support setting compression option ([#192](https://www.github.com/googleapis/java-spanner/issues/192)) ([965e95e](https://www.github.com/googleapis/java-spanner/commit/965e95e70ccd9c62abd6513b0011aab136e48e26))


### Bug Fixes

* set default values for streaming retry ([#316](https://www.github.com/googleapis/java-spanner/issues/316)) ([543373b](https://www.github.com/googleapis/java-spanner/commit/543373b22336be72b10026fda9f0b55939ab94b4))


### Performance Improvements

* use streaming RPC for PDML ([#287](https://www.github.com/googleapis/java-spanner/issues/287)) ([df47c13](https://www.github.com/googleapis/java-spanner/commit/df47c13a4c00bdf5e6eafa01bbb64c12a96d7fb8))


### Dependencies

* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.8.2 ([#315](https://www.github.com/googleapis/java-spanner/issues/315)) ([3d6fb9f](https://www.github.com/googleapis/java-spanner/commit/3d6fb9fd7dc6b2b5b2ff9935228701ac795c9167))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).