@DiscRiskandBisque DiscRiskandBisque released this Dec 19, 2018 · 34 commits to develop since this release

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Ganache turns 2 in the first public beta of this major release! What better way to celebrate than with a cake? The batter is ready; please help us finish the baking process by using the beta in your development workflow. This version is feature-complete, but as with any beta release be on the lookout for cake invaders. šŸ›

šŸ’” Get ready for more dapp insights! You can now save your development blockchains in workspaces. These workspaces contain the configuration of your development chain, along with any Truffle projects you've provided to decode contract and event data.

ā„¹ļø Why a major version bump? There is some debate over the use of semver for GUI applications. After our own deliberations, we've decided to bump Ganache's major version to 2.0 because the workflow has breaking changes.


Workspaces: One Ganache, Multiple Blockchains

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In Ganache 2.0 a development blockchain is one part of a larger workspace. Workspaces allow you to save the settings and state of your development blockchain to revisit later.

The other part(s) of a workspace are your desired Truffle projects. By pointing Ganache to a truffle-config.js or truffle.js config file (see more in creating workspaces), we can use that project's contract artifact files to decode transaction, storage, and event data.

New Home Screen

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When you open Ganache 2.0, you'll see a new home screen. On this screen you're prompted to load an existing workspace (if any exist), create a new custom workspace, or quickstart a one-click blockchain with default options. We'll go over each of these options below.

Empty Home Screen

The Quickstart Workspace

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The QUICKSTART button on the home screen opens the Quickstart workspace. This workspace is similar to how Ganache 1.x worked: you get a brand new blockchain with a genesis block every time you open it. The Quickstart workspace is meant to provide a clean slate for prototype development.

Quickstart Button

Workspace Default Configuration

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Every workspace has it's own configuration. Each workspace's configuration is based off the Quickstart configuration at the time of workspace creation. While these can be changed, the Quickstart workspace starts with the below options:

Hostname: - localhost
Port Number: 7545
Network ID: 5777
Automine: true
Error on Tx Failure: true

Account Default Balance: 100
Total Accounts to Generate: 10
Autogenerate HD Mnemonic: false
Lock Accounts: false

Output Logs to File: false
Verbose Logs: false

However, during workspace creation, the Autogenerate HD Mnemonic is set to true to maintain the same set of accounts.

Creating Workspaces

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There are two methods to create a workspace described below.

Saving the Current Quickstart Blockchain as a New Workspace

As mentioned above, the Quickstart workspace resets the blockchain on every restart. Perhaps we found ourselves prototyping in the Quickstart workspace to try out a couple of things, but then we want to save the blockchain as a new workspace for later recall.

To accomplish this, click the SAVE button near the upper right of the screen when in the Quickstart workspace. You will be taken to the options screen to configure your workspace.

Saving a Workspace

Creating a Workspace From Scratch

You can also create a workspace from the home screen. Clicking the NEW WORKSPACE button on the home screen will take us to the options screen to configure your workspace.

New Workspace Button

Workspace Configuration

A workspace name will be randomly generated for you, but you can go ahead and change it. You can also change any of the other configuration options. When you're ready to start the new workspace, click SAVE WORKSPACE in the top right corner.

New Workspace

You will be taken to the accounts screen. Notice the name of your new workspace near the upper right.

Workspace Name

Loading Existing Workspaces

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After at least one workspace has been created, the home screen will now have a list of workspaces for you to choose from. You can scroll through the list to find the desired workspace, and then load the workspace by clicking its name.

Filled Home Screen

You will be taken to the accounts page. You'll notice that the blockchain state picked up from where you left off (i.e. mnemonic, accounts, associated balances, block height, transactions, etc.).

Switching Workspaces

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To switch workspaces, click the SWTICH button near the upper right of the screen. You'll be taken to the home screen where you can select a different existing workspace or create a new one.

Switching Workspaces

Deleting Workspaces

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To delete a workspace, from the home screen, hover over the workspace name and click the trash can icon on the right hand side. From there you'll see a prompt asking you to confirm the deletion. Click REMOVE to delete the workspace. This action is irreversible! While your linked Truffle projects will remain safe and unchanged, the blockchain data (i.e. blocks, transactions, events, etc.) will be deleted.

Delete Workspace

Truffle Projects: Contract & Event Decoding

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Ganache 2.0 goes beyond blocks and transactions, providing you with fully decoded contract and event data. To get these benefits we must add Truffle projects to our workspace.

Link a Truffle Project

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To link a project, enter the settings by clicking the gear icon in the upper right.

Settings Icon

You should be seeing the WORKSPACE settings pane; if not, you can get there by clicking the WORKSPACE tab in the top left.

Workspaces Settings Pane Tab

From here, there is a section labeled TRUFFLE PROJECTS. Beneath this box, click the button ADD PROJECT. A file selection popup will appear. Navigate to the folder of your Truffle project, and select the truffle-config.js or truffle.js configuration file. The file you pick must be either named truffle-config.js or truffle.js for Ganache to correctly load it.

After selecting the file, you'll see it listed in the TRUFFLE PROJECTS section.

Project Listed

You can add multiple projects to a workspace. After you're finished with adding projects you can click the SAVE AND RESTART (SAVE WORKSPACE if this is a new workspace) button in the top right.

Unlinking a Truffle Project

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If you no longer want a Truffle project linked to a workspace, go to the WORKSPACE settings pane the same way you did when linking the project.

To remove/unlink a Truffle project from the workspace, click on the project file in the TRUFFLE PROJECTS list and then click the REMOVE PROJECT button.

Project Selected

When you're done, click the SAVE AND RESTART (SAVE WORKSPACE if this is a new workspace) button in the top right.

Contracts Page

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The new contracts page contains a list of your smart contracts by project. At a glance we can see the contract's name, address, transaction count, and deployment status.

Contracts Page

Clicking one of the contracts will show more details about that contract including its creation transaction, storage (state), transactions, and events.

Contract Details

Events Page

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The new events page shows the events that have fired during this chain's life. We'll try to decode the events if possible. A decoded event will show its name, the emitting contract, hash of the transaction it appears in, log index, and block time. Encoded events will not display decoded names (they appear instead with the generic name Encoded Event) or contract names.

Why aren't my events being decoded? Check and make sure you've added the corresponding Truffle project with the contract that defines that event.

Events Page

Clicking a decoded contract will reveal more information about the event including its return values and signature.

Event Details

Decoded Transactions

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Ganache will now attempt to decode transactions that are contract calls. In addition to listing the events (encoded or not) for the transaction, Ganache will show the function signature of the transaction as well as the values of the arguments.

Decoded Transaction

ā„¹ļø Why aren't my transactions being decoded? Check and make sure you've added the corresponding Truffle project with the contract that the transaction is being interacted with.


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Ganache 2.0 has been on the drawing board for awhile, and it has taken several months to complete. We'd like to thank the community for their support and patience while we implemented these features! Also thank you to the devs who made this vision happen: @seesemichaelj, @adrianmcli, and @davidmurdoch. šŸ¤—