PrimusSaaS.MultiTenancy.Dapper 1.3.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package PrimusSaaS.MultiTenancy.Dapper --version 1.3.0
                    


                    

                
NuGet\Install-Package PrimusSaaS.MultiTenancy.Dapper -Version 1.3.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="PrimusSaaS.MultiTenancy.Dapper" Version="1.3.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="PrimusSaaS.MultiTenancy.Dapper" Version="1.3.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="PrimusSaaS.MultiTenancy.Dapper" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add PrimusSaaS.MultiTenancy.Dapper --version 1.3.0
                    


                    

                
#r "nuget: PrimusSaaS.MultiTenancy.Dapper, 1.3.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package PrimusSaaS.MultiTenancy.Dapper@1.3.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=PrimusSaaS.MultiTenancy.Dapper&version=1.3.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=PrimusSaaS.MultiTenancy.Dapper&version=1.3.0
                    


                            Install as a Cake Tool

PrimusSaaS.MultiTenancy.Dapper

Dapper + Npgsql storage adapter for PrimusSaaS.MultiTenancy. Implements ITenantStore, ITenantMembershipStore, and ITenantRlsInitializer using raw SQL — no Entity Framework dependency.

Compatible with .NET 8, 9, and 10.

Quick Start

// Program.cs
builder.Services
    .AddPrimusMultiTenancy(opts =>
        builder.Configuration.GetSection("PrimusMultiTenancy").Bind(opts))
    .AddMultiTenancyDapper(
        new NpgsqlTenantDbConnectionFactory(
            builder.Configuration.GetConnectionString("TenantDb")!));

PostgreSQL Schema

Run this DDL once per database before starting the application:

-- Tenants table
CREATE TABLE IF NOT EXISTS primus_tenants (
    tenant_id      TEXT        PRIMARY KEY,
    display_name   TEXT,
    slug           TEXT        UNIQUE,
    status         INT         NOT NULL DEFAULT 0,
    metadata       JSONB,
    created_at_utc TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at_utc TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_primus_tenants_slug   ON primus_tenants (slug);
CREATE INDEX IF NOT EXISTS idx_primus_tenants_status ON primus_tenants (status);

-- Tenant memberships table
CREATE TABLE IF NOT EXISTS primus_tenant_memberships (
    tenant_id      TEXT        NOT NULL REFERENCES primus_tenants(tenant_id) ON DELETE CASCADE,
    principal_id   TEXT        NOT NULL,
    roles          JSONB,
    is_active      BOOL        NOT NULL DEFAULT TRUE,
    expires_at_utc TIMESTAMPTZ,
    PRIMARY KEY (tenant_id, principal_id)
);

CREATE INDEX IF NOT EXISTS idx_primus_memberships_principal ON primus_tenant_memberships (principal_id);

Row-Level Security (RLS)

Enable RLS on tenant-owned tables so each database session can only see its own tenant's rows:

-- Enable RLS on tenants table (optional — tenant_id is the PK so cross-access is explicit)
ALTER TABLE primus_tenants ENABLE ROW LEVEL SECURITY;

CREATE POLICY tenant_isolation_policy ON primus_tenants
    AS PERMISSIVE
    FOR ALL
    USING (tenant_id = current_setting('app.current_tenant', TRUE));

-- Enable RLS on memberships
ALTER TABLE primus_tenant_memberships ENABLE ROW LEVEL SECURITY;

CREATE POLICY membership_tenant_isolation ON primus_tenant_memberships
    AS PERMISSIVE
    FOR ALL
    USING (tenant_id = current_setting('app.current_tenant', TRUE));

Set the session variable before executing queries:

// Inject ITenantRlsInitializer and call it inside a transaction
await using var conn = dataSource.CreateConnection();
await conn.OpenAsync();
await using var tx = await conn.BeginTransactionAsync();

await rlsInitializer.InitializeAsync(conn, tenantId); // SET LOCAL app.current_tenant = '...'
// ... your queries run here under RLS
await tx.CommitAsync();

TenantStatus Values

Value Int
Active 0
Suspended 1
Deleted 2

Environment Variables

ConnectionStrings__TenantDb=Host=localhost;Database=primus;Username=app;Password=secret;
Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
1.3.0 149 6/25/2026
1.0.1 113 4/19/2026

v1.0.0: Initial release — Dapper + Npgsql adapter for MultiTenancy with PostgreSQL RLS support.